Streaming Potential in Unconsolidated Samples Saturated with Monovalent Electrolytes
|
|
- Elfrieda Hart
- 5 years ago
- Views:
Transcription
1 VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) treaming Potential in Unconsolidated amples aturated with Monovalent Electrolytes Luong Duy Thanh 1,*, Rudol prik 2 1 Thuy Loi University, 175 Tay on, Dong Da, Hanoi, Vietnam 2 Van der Waals-Zeeman Institute, University o Amsterdam, The Netherlands Received 30 July 2017 Revised 22 eptember 2017; Accepted 16 October 2017 Abstract: The streaming potential coeicient o liquid-rock systems is theoretically a very complicated unction depending on many parameters including temperature, luid concentration, luid ph, as well as rock parameters such as porosity, grain size, pore size, and ormation actor etc. At a given porous media, the most inluencing parameter is the luid conductivity or electrolyte concentration. Thereore, it is useul to have an empirical relation between the streaming potential coeicient and electrolyte concentration. In this work, the measurements o the streaming potential or our unconsolidated samples (sandpacks) saturated with our monovalent electrolytes at six dierent electrolyte concentrations have been perormed. From the measured streaming potential coeicient, the empirical expression between the streaming potential coeicient and electrolyte concentration is obtained. The obtained expression is in good agreement with those available in literature. Additionally, it is seen that the streaming potential coeicient depends on types o cation in electrolytes and on samples. The dependence o the streaming potential coeicient on types o cation is qualitatively explained by the dierence in the binding constant or cation adsorption on the silica suraces. The dependence o the streaming potential coeicient on samples is due to the variation o eective conductivity and the zeta potential between samples. Keywords: treaming potential coeicient, zeta potential, porous media, sands. 1. Introduction The streaming potential is induced by the relative motion between the luid and the solid surace. In porous media such as rocks, sands or soils, the electric current density, linked to the ions within the luid, is coupled to the luid low. treaming potential plays an important role in geophysical applications. For example, the streaming potential is used to map subsurace low and detect orresponding author. Tel.: luongduythanh2003@yahoo.com https//doi.org/ / /vnumap
2 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) subsurace low patterns in oil reservoirs [e.g., 1]. treaming potential is also used to monitor subsurace low in geothermal areas and volcanoes [e.g., 2, 3]. Monitoring o streaming potential anomalies has been proposed as a means o predicting earthquakes [e.g., 4, 5] and detecting o seepage through water retention structures such as dams, dikes, reservoir loors, and canals [6]. The streaming potential coeicient (P) is a very important parameter, since this parameter controls the amount o coupling between the luid low and the electric current low in porous media. The P o liquid-rock systems is theoretically a very complicated unction depending on 18 undamental parameters including temperature, pore luid concentration, luid ph, as well as rock parameters such as porosity, grain size, pore size, and ormation actor etc [e.g., 7, 8]. At a given porous media, the most inluencing parameter is the luid conductivity. Thereore, it is useul to have an empirical relation between the P and luid conductivity or electrolyte concentration. For example, Jouniaux and Ishido [8] obtain an empirical relation to predict the P rom luid conductivity based on numerous measurements o the streaming potential on sand saturated by Nal which have been published. By itting experimental data collected or sandstone, sand, silica nanochannels, tainton, and Fontainebleau with electrolytes o Nal and Kl, Jaaar et al. [9] obtain another empirical expression between the P and electrolyte concentration. However, experimental data sets they used or itting are rom dierent sources with dissimilar luid conductivity, luid ph, temperature, mineral composition o porous media. All those dissimilarities may cause the empirical expressions less accurate. To critically seek empirical expressions to estimate the P rom electrolyte concentration, we have carried out streaming potential measurements or a set o our sandpacks saturated by our monovalent electrolytes (Nal, NaI, Kl and KI) at six dierent electrolyte concentrations (10 4 M, M, 10 3 M, M, M, and 10 2 M). From the measured P, we obtain the empirical expression between the P and electrolyte concentration. The obtained expression is in good agreement with those reported in [8, 9] in which the P in magnitude is inversely proportional to electrolyte concentration. Additionally, it is seen that the streaming potential coeicient depends on types o cation in electrolytes and on samples. The dependence o the streaming potential coeicient on types o cation is qualitatively explained by the dierence in the binding constant or cation adsorption on the silica suraces. The dependence o the streaming potential coeicient on samples is due to the variation o eective conductivity and the zeta potential between samples. This paper includes ive sections. ection 2 describes the theoretical background o streaming potential. ection 3 presents the experimental measurement. ection 4 contains the experimental results and discussion. onclusions are provided in the inal section. 2. Theoretical background o streaming potential 2.1. Electrical double layer A porous medium is ormed by mineral solid grains such as silicates, oxides, carbonates etc. When a solid grain surace is in contact with a liquid, it acquires a surace electric charge [12]. The surace charge repels ions in the electrolyte whose charges have the same sign as the surace charge (called the coions ) and attracts ions whose charges have the opposite sign (called the counterions and normally cations) in the vicinity o the electrolyte silica interace. This leads to the charge distribution known as the electric double layer (EDL) as shown in Fig. 1. The EDL is made up o the tern layer, where cations are adsorbed on the surace and are immobile due to the strong electrostatic attraction, and the diuse layer, where the ions are mobile. The distribution o ions and the electric potential
3 16 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) within the diuse layer is governed by the Poisson Boltzman (PB) equation which accounts or the balance between electrostatic and thermal diusion orces [12]. The solution to the linear PB equation in one dimension perpendicular to a broad planar interace is well-known and produces an electric potential proile that decays approximately exponentially with distance as shown in Fig. 1. In the bulk liquid, the number o cations and anions is equal so that it is electrically neutral. The closest plane to the solid surace in the diuse layer at which low occurs is termed the shear plane or the slipping plane, and the electrical potential at this plane is called the zeta potential (ζ). The zeta potential plays an important role in determining the degree o coupling between the electric low and the luid low in porous media. Most reservoir rocks have a negative surace charge and a negative zeta potential when in contact with ground water [13, 14]. The characteristic length over which the EDL exponentially decays is known as the Debye length and is on the order o a ew nanometers in most rock-water systems. The Debye length is a measure o the diuse layer thickness; its value depends solely on the properties o the luid and not on the properties o the solid surace [15] and is given by (or a symmetric, monovalent electrolyte such as Nal) o rkt b d, (1) Ne where k b is the Boltzmann s constant, ε 0 is the dielectric permittivity in vacuum, ε r is the relative permittivity o the luid, T is temperature (in K), e is the elementary charge, N is the Avogadro s number and is the electrolyte concentration (mol/l). Figure 1. tern model [10, 11] or the charge and electric potential distribution in the electric double layer at a solid-liquid interace. In this igure, the solid surace is negatively charged and the mobile counter-ions in the diuse layer are positively charged (in most rock-water systems). Figure 2. Development o streaming potential when an electrolyte is pumped through a capillary (a porous medium is made o an array o parallel capillaries).
4 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) treaming potential The dierent lows (luid low, electrical current low, heat low etc.) are coupled by the general equation J i = n Lij X j, (2) j 1 which links the orces X j to the macroscopic luxes J i through transport coupling coeicients L ij [16]. onsidering the coupling between the hydraulic low and the electric current low, assuming a constant temperature and no concentration gradients, the electric current density J e (A/m 2 ) and the low o luid J (m/s) can be written as the ollowing coupled equation [e.g., 8]: J e = - 0 V Lek P. (3) k0 J = - Lek V P, (4) where P is the pressure that drives the luid low (Pa), V is the electrical potential (V), 0 is the bulk electrical conductivity, k 0 is the bulk permeability (m 2 ), is the dynamic viscosity o the luid (Pa.s), and L ek is the electrokinetic coupling (A.Pa -1.m -1 ). The irst term in Eq. (3) is the Ohm s law, and the second term in Eq. (4) is the Darcy s law. The coupling coeicient L ek is the same in Eq. (3) and Eq. (4) because the coupling coeicients must satisy the Onsager s reciprocal relation in the steady state. From these equations, it is possible to notice that even i no potential dierence is applied ( V = 0), then simply the presence o a pressure dierence can produce an electric current. On the other hand, i no pressure dierence is applied ( P = 0), the presence o an electric potential dierence can still generate a luid low by electroosmosis. The P (V/Pa) is deined when the electric current density J e is zero, leading to V L (5) ek. P 0 This coeicient can be measured by applying a pressure dierence P to a porous medium and by detecting the induced electric potential dierence V (see Fig. 2). The driving pressure induces a streaming current (second term in Eq. (3)) which is balanced by the conduction current (irst term in Eq. (3)) which leads to the electric potential dierence that can be measured. In the case o a unidirectional low through a cylindrical saturated porous rock, this coeicient can be expressed as [e.g., 1, 4, 8] (6) r o, e where σ e is the eective conductivity, and ζ is the zeta potential. The eective conductivity includes the luid conductivity and the surace conductivity. To characterize the relative contribution o the surace conductivity, the dimensionless quantity called the Dukhin number has been introduced [17]. The P can also be written as [e.g., 8, 18] (7) r o, F r
5 18 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) where σ r is the electrical conductivity o the sample saturated by a luid with a conductivity o σ and F is the ormation actor. The electrical conductivity o the sample can possibly include surace conductivity. I the luid conductivity is much higher than the surace conductivity, the eective conductivity is approximately equal to the luid conductivity, σ e = Fσ r = σ and the P becomes the well-known Helmholtz-moluchowski equation: (8) r o. 3. Experiment treaming potential measurements have been perormed on our unconsolidated samples o sand particles with dierent diameters (ee Table 1). The samples are made up o blasting sand particles obtained rom Unicorn I BV ompany. Four monovalent electrolytes (Nal, NaI, Kl and KI) are used with 6 dierent concentrations (10 4 M, M, 10 3 M, M, M, and 10 2 M). All measurements are carried out at room temperature (22 ±1 o ) ample assembly amples are constructed by illing polycarbonate plastic tubes (1 cm in inner diameter and 7.5 cm in length) successively with 2 cm thick layers o particles that are gently tamped down, and they are then shaken by a shaker (TIRA-model TV52110). Filter paper is used in both ends o the tube to retain the particles and is permeable enough to let the luid pass through. The samples are lushed with distilled water to remove any powder or dust Porosity, permeability, and ormation actor measurements The porosity is measured by a simple method mentioned in [19] and reerence therein. The sample is irst dried in oven or 24 hours, then cooled to room temperature, and inally ully saturated with deionized water under vacuum. The sample is weighed beore (m dry ) and ater ull saturation (m wet ) by a vacuum desiccator and the porosity is determined as ( mwet m dry ) /, (9) AL where ρ is density o the water, A and L are the cross sectional area and the physical length o the samples, respectively. The measured porosity o the samples is 0.39 independently o the size o sand particles with an error o 5%. This value is in good agreement with [20] or a random packing o spherical particles. Table 1. ample ID, diameter range, permeability k o, porosity, ormation actor F and tortuosity α. ample ID ize (μm) k o (m 2 ) F α
6 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) Figure 3. The low rate against pressure dierence. Two runs are shown or the sample 3. Permeability is determined by a constant low-rate experiment (see [19] and reerence therein or more details). A high pressure pump (LabHut, eries III- Pump) ensures a constant low through the sample, a high precision dierential pressure transducer (Endress and Hauser Deltabar PMD75) is used to measure the pressure drop. For low velocities Darcy s law holds ka o P Q, L (10) where Q is the luid volume low rate, k o is the permeability, P is the dierential pressure imposed across the sample, η is the viscosity o the luid. The permeability is then determined rom the slope o the low rate - pressure graph (see Figure 3 or the sample 3, or example) with the knowledge o L, A and η (10-3 Pa.s). The graph shows that there is a linear relationship between low rate and pressure dierence and Darcy s law is obeyed. imilarly, the permeability o other samples is obtained and reported in Table 1 with an error o 10 %. Figure 4. chematic o the experimental setup to measure the saturated sample resistance. Method o determining the ormation actor and tortuosity is introduced in [19] and reerence therein. The ormation actor F is deined as: F, (11) r
7 20 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) where α is the tortuosity, ϕ is the porosity o the sample, σ is the electrical conductivity o the luid directly measured by a conductivity meter (onsort 861) and σ r is the electrical conductivity o the ully saturated sample. Eq. (11) is only valid when surace conductivity eects become negligible (σ is higher than 0.60 /m as stated in [21] or silica-based samples). chematic o the experimental setup to measure resistances o saturated samples is shown in Figure 4. The electrodes or the resistance measurements are silver meshes. The electrodes are placed on both sides against the sample that is ully saturated successively with a set o Nal solutions with high conductivities. The sample resistance is measured by an impedance analyzer (Hioki IM3570) to calculate σ r with the knowledge o the geometry o the sample (the length and the diameter). From the measured values o σ and σ r, the ormation actor and corresponding tortuosity are determined with an error o 6 % and 9 %, respectively (see Table 1). The measured ormation actors o the samples are the range rom 4.0 to 4.3. According to Archie s law, F m in which is the porosity o the sample and m is the so called cementation exponent. For unconsolidated samples made o spherical particles, the exponent is around 1.5 [22]. Thereore, the measured ormation actors are in good agreement with Archie s law. Figure 5. Experimental setup or streaming potential measurements. Figure 6. treaming potential as a unction o pressure dierence or the sample 3 and electrolyte Kl at a concentration o M. Three representative measurements are shown.
8 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) treaming potential measurement The experimental setup or the streaming potential measurement is shown in Fig. 5. The solution is circulated through the samples until the electrical conductivity and ph o the solution reach a stable value measured by a multimeter (onsort 861). The ph values o equilibrium solutions are in the range 6.0 to 7.5. Electrical potential dierences across the samples are measured by a high input impedance multimeter (Keithley Model 2700) connected to a computer and controlled by a Labview program (National Instruments). Pressure dierences across a sample are measured by a highprecision dierential pressure transducer (Endress and Hauser Deltabar PMD75). Table 2. The streaming potential coeicient (in mv/bar) or dierent electrolyte concentrations. ample ID Electrolyte 10 4 M M 10 3 M M M 10 2 M Nal NaI Kl KI Nal NaI Kl KI Nal NaI Kl KI Nal NaI Kl KI The way used to collect the P is already described in [23] and reerence therein. treaming potential across the sample (ΔV) is measured as a unction o applied pressure dierence (ΔP). The P is then obtained as the slope o the straight line (see Fig. 6). Three measurements are perormed to ind the average value o the P. The P or all samples at dierent electrolyte concentrations is shown in Table 2 except or two samples 1 and 2 at electrolyte concentration o 10-2 M. Because these samples are very permeable, they need a very large low rate to generate measurable electric potentials at high electrolyte concentration. The maximum error o the P is 10 %. It is ound that the P is negative or all samples and all electrolytes used in this work. 4. Results and discussion From Table 2, the dependence o the P on types o electrolyte is shown in Fig. 7 or a representative sample (or example, sample 3). Fig. 7 shows that the magnitude o the P decreases with increasing electrolyte concentration or all samples and all electrolytes as reported in literature [e.g., 7, 8]. The experimental result also shows that the P mostly depend on types o cation in electrolytes. The dependence o the P on types o cation can be qualitatively explained by the dierence in the binding constant o cations. For example, the binding constant o K + is larger than Na + [7]. Thereore, at the same ionic strength more cations o K + are absorbed on the negative solid surace than cations o Na +. This makes the electric potential on the shear plane (the zeta potential)
9 22 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) smaller in the electrolyte containing cations o K + than that in the electrolyte containing cations o Na +. Thereore, cations have eect on the zeta potential and on the P. Namely, the P in magnitude is larger in the electrolyte containing cations o Na + than that in the electrolyte containing cations o K +. The experimental results also show that anions have only a small eect on the P as observed in [24]. Figure 7. The magnitude o the P as a unction o electrolyte concentration or dierent electrolytes and or the sample 3. Fig. 8 shows the variation o the P with samples or electrolyte NaI, or example. It is seen that at a given electrolyte concentration, the P depends on the samples. Namely, the magnitude o the P increases in the order rom 1, 2, 3 and 4 respectively. This may be due to the variation o eective conductivity with particle size o the samples and the dierence in the zeta potential between the samples. From Table 2, the magnitude o the P as a unction o electrolyte concentration is plotted or all samples saturated by dierent electrolytes (see Fig. 9). By itting the experimental data shown by the solid line in Fig. 9, the empirical relation between the P in magnitude and electrolyte concentration is obtained as (V/Pa) (12) where is electrolyte concentration. Figure 8. The magnitude o the P as a unction o electrolyte concentration or dierent samples saturated by electrolyte NaI.
10 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) Expression in Eq. (12) has the similar orm as the empirical expression / obtained by Jaaar et al. [9] by itting experimental data collected or sandstone, sand, silica nanochannels, tainton, and Fontainebleau with electrolytes o Nal and Kl at ph = 6-8. Additionally, by itting experimental data on sand saturated by Nal at ph = 7-8 which are available 8 in literature, Jouniaux and Ishido [8] obtain the expression / ( is the luid conductivity). The relation between luid conductivity o a Nal solution and electrolyte concentration in the range 10-6 M < < 1 M (15 o < temperature < 25 o ) is given as 10 [25]. Thereore, we 9 get the expression / based on [8] and that is also similar to Eq. (12). The prediction o P as a unction o electrolyte concentration rom the empirical expressions o [8, 9] is also shown in Fig. 9 (see the dashed lines). It is seen that the predictions rom [8, 9] have the same behavior as that obtained in this work but give smaller values o the P at a given electrolyte concentration. The reason or the deviation between the empirical expressions may be due to dissimilarities o luid conductivity, luid ph, mineral composition o porous media, temperature etc. Figure 9. P in magnitude as a unction o electrolyte concentration or dierent samples (1, 2, 3 and 4) and dierent electrolytes (Nal, NaI, Kl and KI). ymbols are experimental data. olid line is the itting line and two other dashed lines are predicted rom [8] and [9]. 5. onclusions The measurements o the streaming potential o our unconsolidated samples saturated with our monovalent electrolytes at dierent electrolyte concentrations have been perormed. From the measured P, the empirical expression between the P and electrolyte concentration is obtained. The empirical expression is in good agreement with those reported in literature in which the P in magnitude is inversely proportional to electrolyte concentration. This work has added an additional empirical expression to the existing ones that allow us to predict the P rom electrolyte concentration or silica-based samples saturated by monovalent electrolytes. Additionally, it is seen that the streaming potential coeicient depends on types o cation in electrolytes and on samples. The dependence o the streaming potential coeicient on types o cation is qualitatively explained by the dierence in the binding constant or cation adsorption on the silica suraces. The dependence o the streaming potential coeicient on samples is due to the variation o eective conductivity and the zeta potential between samples.
11 24 L.D. Thanh, Rudol. / VNU Journal o cience: Mathematics Physics, Vol. 34, No. 1 (2018) Acknowledgments The irst author would like to thank Vietnam National Foundation or cience and Technology Development (NAFOTED) under grant number or the inancial support. Reerences [1] B. Wurmstich, F. D. Morgan, Geophysics 59 (1994) [2] R. F. orwin, D. B. Hoovert, Geophysics 44 (1979) [3] F. D. Morgan, E. R. Williams, T. R. Madden, Journal o Geophysical Research 94 (1989) [4] H. Mizutani, T. Ishido, T. Yokokura,. Ohnishi, Geophys. Res. Lett. 3 (1976). [5] M. Trique, P. Richon, F. Perrier, J. P. Avouac, J.. abroux, Nature (1999) [6] A. A. Ogilvy, M. A. Ayed, V. A. Bogoslovsky, Geophysical Prospecting 17 (1969) [7] P. W. J. Glover, E. Walker, and M. D. Jackson, Geophysics 77 (2012) D17 D43. [8] L. Jouniaux and T. Ishido, International Journal o Geophysics, vol. 2012, Article ID , 16 pages, doi: /2012/ [9] Vinogradov, J., M. Z. Jaaar, and M. D. Jackson, Journal o Geophysical Research Atmospheres 115 (2010) B [10] O. tern, Z. Elektrochem 30 (1924) [11] T. Ishido, H. Mizutani, Journal o Geophysical Research 86 (1981) [12] H. M. Jacob, B. ubirm, Electrokinetic and olloid Transport Phenomena, Wiley-Interscience, [13] K. E. Butler, eismoelectric eects o electrokinetic origin, PhD thesis, University o British olumbia, [14] H. Hase, T. Ishido,. Takakura, T. Hashimoto, K. ato, Y. Tanaka, Geophysical Research Letters 30 (2003) [15] R. J. Hunter, Zeta Potential in olloid cience, Academic, New York, [16] L. Onsager, Physical Review 37 (1931) [17]. Dukhin, V. hilov, Dielectric Phenomena and the Double Layer in Disperse ystems and Polyelectrolytes, John Wiley and ons, New York, [18] L. Jouniaux, M. L. Bernard, M. Zamora, J. P. Pozzi, Journal o Geophysical Research B 105 (2000) [19] Luong Duy Thanh, Rudol prik, VNU Journal o cience: Mathematics-Physics 32 (2016) [20] Paul W. Glover and Nicholas Déry. Geophysics 75(2010), F225-F241. [21]. F. Alkaee and A. F. Alajmi, olloids and uraces A 289 (2006) [22] P. N. en,. cala, and M. H. ohen, Geophysics 46 (1981) [23] Lưong Duy Thanh, Rudol prik, VNU Journal o cience: Mathematics and Physics 31 (2015) [24] Luong Duy Thanh and Rudol prik (2016). Zeta potential in porous rocks in contact with monovalent and divalent electrolyte aqueous solutions geophysics, 81(4), D303-D314. [25] P. N. en and P. A. Goode, Geophysics 57 (1992)
The Zeta Potential Measurements in Sandpacks Saturated with Monovalent Electrolytes
VNU Journal o cience: Mathematics Physics, Vol. 34, No. 2 (218) 8-19 The Zeta Potential Measurements in andpacks aturated with Monovalent Electrolytes Luong Duy Thanh * Thuy Loi University, 175 Tay on,
More informationA study on the Variation of Streaming Potential Coefficient with Physical Parameters of Rocks
VNU Journal o Science: Mathematics Physics, Vol. 33, No. 1 (2017) 60-68 A study on the Variation o Streaming Potential Coeicient with Physical Parameters o Rocks Luong Duy Thanh 1,*, Rudol Sprik 2 1 Thuy
More informationUvA-DARE (Digital Academic Repository) Electrokinetics in porous media Luong, D.T. Link to publication
UvA-DARE (Digital Academic Repository) Electrokinetics in porous media Luong, D.T. Link to publication Citation for published version (APA): Luong, D. T. (2014). Electrokinetics in porous media General
More informationNumerical Investigation of Parameters Affecting. Seismoelectric Coupling Coefficient in. Partially-Saturated Porous Media
Contemporary Engineering Sciences, Vol. 9, 16, no. 5, 143-153 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/1.1988/ces.16.6711 Numerical Investigation o Parameters Aecting Seismoelectric Coupling Coeicient
More informationResearch Article Streaming Potential and Electroosmosis Measurements to Characterize Porous Materials
ISRN Geophysics Volume 213, Article ID 496352, 8 pages http://dx.doi.org/1.1155/213/496352 Research Article Streaming Potential and Electroosmosis Measurements to Characterize Porous Materials D. T. Luong
More informationAnalysis of Non-Thermal Equilibrium in Porous Media
Analysis o Non-Thermal Equilibrium in Porous Media A. Nouri-Borujerdi, M. Nazari 1 School o Mechanical Engineering, Shari University o Technology P.O Box 11365-9567, Tehran, Iran E-mail: anouri@shari.edu
More informationELECTROKINETIC GROUNDWATER EXPLORATION: A NEW GEOPHYSICAL TECHNIQUE
181 ELECTROKINETIC GROUNDWATER EXPLORATION: A NEW GEOPHYSICAL TECHNIQUE Sukhyoun Kim, Graham Heinson & John Joseph CRC LEME, School of Earth and Environment Sciences, University of Adelaide, SA, 5005 ABSTRACT
More informationFiltration. Praktikum Mechanical Engineering. Spring semester ML F16 Tel.:
Praktikum Mechanical Engineering Spring semester 2018 Filtration Supervisor: Davide Stucchi ML F16 stucchid@ptl.mavt.ethz.ch Tel.: 044 632 25 05 1 1 Table o Contents 1 TABLE OF CONTENTS... 2 2 INTRODUCTION...
More informationPart II: Self Potential Method and Induced Polarization (IP)
Part II: Self Potential Method and Induced Polarization (IP) Self-potential method (passive) Self-potential mechanism Measurement of self potentials and interpretation Induced polarization method (active)
More informationOpen Access Establishment of Mathematical Model and Sensitivity Analysis of Plugging Capacity of Multi-Component Foam Flooding
Send Orders or Reprints to reprints@benthamscience.ae 84 The Open Chemical Engineering Journal, 2015, 9, 84-89 Open Access Establishment o Mathematical Model and Sensitivity Analysis o Plugging Capacity
More informationWhen water (fluid) flows in a pipe, for example from point A to point B, pressure drop will occur due to the energy losses (major and minor losses).
PRESSURE DROP AND OSSES IN PIPE When water (luid) lows in a pipe, or example rom point A to point B, pressure drop will occur due to the energy losses (major and minor losses). A B Bernoulli equation:
More informationMeasurement of streaming potential coupling coefficient in sandstones saturated with high salinity NaCl brine
GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L21306, doi:10.1029/2009gl040549, 2009 Measurement of streaming potential coupling coefficient in sandstones saturated with high salinity NaCl brine M. Z. Jaafar,
More informationNicholas Déry & Paul Glover. Université Laval, Québec, Canada
Nichola Déry & Paul Glover Univerité Laval, Québec, Canada The Helmholtz Smoluchowki equation relate the treaming potential coupling coeicient i (SPCC) to zeta potential Pore luid dielectric permittivity
More informationExamination of a Theoretical Model of Streaming Potential Coupling Coefficient Luong, D.T.; Sprik, R.
UvA-DARE (Digital Academic Repository) Examination of a Theoretical Model of Streaming Potential Coupling Coefficient Luong, D.T.; Sprik, R. Published in: ISRN Geophysics DOI: 1.1155/214/471819 Link to
More informationDeviation of linear relation between streaming potential and pore fluid pressure difference in granular material at relatively high Reynolds numbers
Earth Planets Space, 58, 1045 1051, 2006 Deviation of linear relation between streaming potential and pore fluid pressure difference in granular material at relatively high Reynolds numbers Tohru Watanabe
More informationISO Colloidal systems Methods for zetapotential. Part 1: Electroacoustic and electrokinetic phenomena
INTERNATIONAL STANDARD ISO 13099-1 First edition 2012-06-15 Colloidal systems Methods for zetapotential determination Part 1: Electroacoustic and electrokinetic phenomena Systèmes colloïdaux Méthodes de
More informationFILM STACKING IMPREGNATION MODEL FOR THERMOPLASTIC COMPOSITES APPLIED TO A NOVEL NET-SHAPE PREFORMING PROCESS
The 8 th International Conerence on Flow Processes in Composite Materials (FPCM8) FILM STACKING IMPREGNATION MODEL FOR THERMOPLASTIC COMPOSITES APPLIED TO A NOVEL NET-SHAPE PREFORMING PROCESS S.T.Jespersen
More informationModelling ph-dependent and Microstructure-Dependent Streaming Potential Coefficient and Zeta Potential of Porous Sandstones
Transp Porous Med (2018) 124:31 56 https://doi.org/10.1007/s11242-018-1036-z Modelling ph-dependent and Microstructure-Dependent Streaming Potential Coefficient and Zeta Potential of Porous Sandstones
More informationControlling the Heat Flux Distribution by Changing the Thickness of Heated Wall
J. Basic. Appl. Sci. Res., 2(7)7270-7275, 2012 2012, TextRoad Publication ISSN 2090-4304 Journal o Basic and Applied Scientiic Research www.textroad.com Controlling the Heat Flux Distribution by Changing
More informationColloid Chemistry. La chimica moderna e la sua comunicazione Silvia Gross.
Colloid Chemistry La chimica moderna e la sua comunicazione Silvia Gross Istituto Dipartimento di Scienze di e Scienze Tecnologie Chimiche Molecolari ISTM-CNR, Università Università degli Studi degli Studi
More informationTwo-phase flow in a fissurized-porous media
Two-phase low in a issurized-porous media P. Ø. Andersen and S. Evje Citation: AIP Con. Proc. 479, 234 (22); doi:.63/.4756663 View online: http://dx.doi.org/.63/.4756663 View Table o Contents: http://proceedings.aip.org/dbt/dbt.jsp?key=apcpcs&volume=479&issue=
More informationNumber of pages in the question paper : 05 Number of questions in the question paper : 48 Modeling Transport Phenomena of Micro-particles Note: Follow the notations used in the lectures. Symbols have their
More informationTHE NEAR-WELLBORE PRESSURE CALCULATION MODEL INCORPORATING THERMOCHEMICAL EFFECT
HERMAL CIENCE: Year 2018, Vol. 22, No. 1B, pp. 623-630 623 HE NEAR-WELLBORE PREURE CALCULAION MODEL INCORPORAING HERMOCHEMICAL EFFEC by Zhiqiang ANG, Qian LI *, and Hu YIN Petroleum and Natural Gas Engineering
More informationScienceDirect. Heat transfer and fluid transport of supercritical CO 2 in enhanced geothermal system with local thermal non-equilibrium model
Available online at www.sciencedirect.com ScienceDirect Energy Procedia 63 (2014 ) 7644 7650 GHGT-12 Heat transer and luid transport o supercritical CO 2 in enhanced geothermal system with local thermal
More informationTheoretical and Experimental Studies of Seismoelectric Conversions in Boreholes
COMMUNICATIONS IN COMPUTATIONAL PHYSICS Vol. 3, No. 1, pp. 109-120 Commun. Comput. Phys. January 2008 Theoretical and Experimental Studies of Seismoelectric Conversions in Boreholes Zhenya Zhu 1,, Shihong
More informationChem 406 Biophysical Chemistry Lecture 1 Transport Processes, Sedimentation & Diffusion
Chem 406 Biophysical Chemistry Lecture 1 Transport Processes, Sedimentation & Diusion I. Introduction A. There are a group o biophysical techniques that are based on transport processes. 1. Transport processes
More informationCONVECTIVE HEAT TRANSFER CHARACTERISTICS OF NANOFLUIDS. Convective heat transfer analysis of nanofluid flowing inside a
Chapter 4 CONVECTIVE HEAT TRANSFER CHARACTERISTICS OF NANOFLUIDS Convective heat transer analysis o nanoluid lowing inside a straight tube o circular cross-section under laminar and turbulent conditions
More informationSCIENCE CHINA Physics, Mechanics & Astronomy
SCIENCE CHINA Physics, Mechanics & Astronomy Article June 014 Vol.57 No.6: 1068 1077 doi: 10.1007/s11433-014-5435-z Wave dispersion and attenuation in viscoelastic isotropic media containing multiphase
More informationAvailable online at ScienceDirect. Energy Procedia 83 (2015 ) Václav Dvo ák a *, Tomáš Vít a
Available online at www.sciencedirect.com ScienceDirect Energy Procedia 83 (205 ) 34 349 7th International Conerence on Sustainability in Energy and Buildings Numerical investigation o counter low plate
More informationRESOLUTION MSC.362(92) (Adopted on 14 June 2013) REVISED RECOMMENDATION ON A STANDARD METHOD FOR EVALUATING CROSS-FLOODING ARRANGEMENTS
(Adopted on 4 June 203) (Adopted on 4 June 203) ANNEX 8 (Adopted on 4 June 203) MSC 92/26/Add. Annex 8, page THE MARITIME SAFETY COMMITTEE, RECALLING Article 28(b) o the Convention on the International
More informationAn Improved Expression for a Classical Type of Explicit Approximation of the Colebrook White Equation with Only One Internal Iteration
International Journal o Hydraulic Engineering 06, 5(): 9-3 DOI: 0.593/j.ijhe.06050.03 An Improved Expression or a Classical Type o Explicit Approximation o the Colebrook White Equation with Only One Internal
More informationModeling the electrochemical properties and the complex conductivity of calcite
Modeling the electrochemical properties and the complex conductivity of calcite Shuai Li Philippe Leroy Damien Jougnot André Revil Nicolas Devau Frank Heberling Mohamed Azaroual Complex conductivity in
More informationThe influence of hydraulic fracturing on microseismic propagation
The inluence o hydraulic racturing on microseismic propagation Xiaolin Zhang 1, Feng Zhang 1, Xiang-Yang Li 1, 1 CPC Geophysical Key Lab, China University o Petroleum, Changping, Beijing, China, 1049 Email:
More informationMultimedia : Boundary Lubrication Podcast, Briscoe, et al. Nature , ( )
3.05 Nanomechanics of Materials and Biomaterials Thursday 04/05/07 Prof. C. Ortiz, MITDMSE I LECTURE 14: TE ELECTRICAL DOUBLE LAYER (EDL) Outline : REVIEW LECTURE #11 : INTRODUCTION TO TE ELECTRICAL DOUBLE
More informationBenchmark Calculations with COMSOL of the Transport of Radionuclides through Clay and Bentonite Barriers in a Geological Repository
Excerpt rom the Proceedings o the COMSOL Conerence 2009 Milan Benchmark Calculations with COMSOL o the Transport o Radionuclides through Clay and Bentonite Barriers in a Geological Repository Manuel Lorenzo
More informationNumber of pages in the question paper : 06 Number of questions in the question paper : 48 Modeling Transport Phenomena of Micro-particles Note: Follow the notations used in the lectures. Symbols have their
More informationNon-newtonian Rabinowitsch Fluid Effects on the Lubrication Performances of Sine Film Thrust Bearings
International Journal o Mechanical Engineering and Applications 7; 5(): 6-67 http://www.sciencepublishinggroup.com/j/ijmea doi:.648/j.ijmea.75.4 ISSN: -X (Print); ISSN: -48 (Online) Non-newtonian Rabinowitsch
More informationTHE MODEL OF DRYING SESSILE DROP OF COLLOIDAL SOLUTION
THE MODEL OF DRYING SESSILE DROP OF COLLOIDAL SOLUTION I.V.Vodolazskaya, Yu.Yu.Tarasevic Astrakan State University, a Tatiscev St., Astrakan, 41456, Russia e-mail: tarasevic@aspu.ru e ave proposed and
More informationLABORATORY OBSERVATIONS OF AN ADVANCING BOILING FRONT IN A POROUS MEDIUM AND CORRELATION TO SELF POTENTIAL MEASUREMENTS
PROCEEDINGS, Twenty-Ninth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, January 26-28, 24 LABORATORY OBSERVATIONS OF AN ADVANCING BOILING FRONT IN A POROUS MEDIUM
More informationColloids: Dilute Dispersions and Charged Interfaces
17-9-15 Colloids: Dilute Dispersions and Chared Interaces Andreas B. Dahlin ecture 1/6 Jones: 4.1-4.3, Hamley: 3.1-3.4 adahlin@chalmers.se http://www.adahlin.com/ 17-9-15 Sot Matter Physics 1 Continuous
More informationInternational Journal of Engineering & Technology IJET-IJENS Vol:18 No:03 1
International Journal of Engineering & Technology IJET-IJENS Vol:18 No:03 1 Analytical Derivation of Diffusio-osmosis Electric Potential and Velocity Distribution of an Electrolyte in a Fine Capillary
More informationHYDROMAGNETIC DIVERGENT CHANNEL FLOW OF A VISCO- ELASTIC ELECTRICALLY CONDUCTING FLUID
Rita Choudhury et al. / International Journal o Engineering Science and Technology (IJEST) HYDROAGNETIC DIVERGENT CHANNEL FLOW OF A VISCO- ELASTIC ELECTRICALLY CONDUCTING FLUID RITA CHOUDHURY Department
More informationHydraulic validation of the LHC cold mass heat exchanger tube.
Hydraulic validation o te LHC cold mass eat excanger tube. LHC Project Note 155 1998-07-22 (pilippe.provenaz@cern.c) Pilippe PROVENAZ / LHC-ACR Division Summary Te knowledge o te elium mass low vs. te
More informationPrediction of Well Bore Temperatures during Ultra-Deep Drilling
Prediction o Well Bore Temperatures during Ultra-Deep Drilling Fanhe Meng, Aiguo Yao*, Shuwei Dong Faculty o Engineering China University o Geosciences Wuhan, Hubei, 430074, China Abstract In order to
More informationOE4625 Dredge Pumps and Slurry Transport. Vaclav Matousek October 13, 2004
OE465 Vaclav Matousek October 13, 004 1 Dredge Vermelding Pumps onderdeel and Slurry organisatie Transport OE465 Vaclav Matousek October 13, 004 Dredge Vermelding Pumps onderdeel and Slurry organisatie
More informationOn the relative importance of global and squirt flow in cracked porous media
On the relative importance o global and squirt low in cracked porous media Aamir Ali 1 and Morten Jakobsen 1, 1 Department o Earth Sciences, University o Bergen, Allegaten 41, 5007 Bergen, Norway. Centre
More informationwater L v i Chapter 4 Saturation
4. Resistivity The presence of hydrocarbons is identified by the electrical resistance of the formation. These electrical properties of rocks depend on the pore geometry and fluid distribution. That is,
More informationElectrophoretic Light Scattering Overview
Electrophoretic Light Scattering Overview When an electric field is applied across an electrolytic solution, charged particles suspended in the electrolyte are attracted towards the electrode of opposite
More informationIntrinsic Small-Signal Equivalent Circuit of GaAs MESFET s
Intrinsic Small-Signal Equivalent Circuit o GaAs MESFET s M KAMECHE *, M FEHAM M MELIANI, N BENAHMED, S DALI * National Centre o Space Techniques, Algeria Telecom Laboratory, University o Tlemcen, Algeria
More informationSIMULATION OF A FLOW THROUGH A RIGID POROUS MEDIUM SUBJECTED TO A CONSTRAINT
SIMULATION O A LOW THROUGH A RIGID POROUS MEDIUM SUBJECTED TO A CONSTRAINT R. M. Saldanha da Gama a, J. J. Pedrosa ilho a, and M. L. Martins-Costa b a Universidade do Estado do Rio de Janeiro Departamento
More information3D Numerical Modelling of Convective Heat Transfer through Two-sided Vertical Channel Symmetrically Filled with Metal Foams
P Periodica Polytechnica Mechanical Engineering P 60(4), pp. 193-202, 2016 DOI: 10.3311/PPme.8511 Creative Commons Attribution b 3D Numerical Modelling o Convective Heat Transer through Two-sided Vertical
More informationSingle action pressing (from top)
www.komage.de Single action pressing (from top) Double action pressing with fixed die Typical course of the pressure during pressing and ejection (Single action) Upper punch Pressure Lower punch Time Green
More informationMeasurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high salinity
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 115,, doi:10.1029/2010jb007593, 2010 Measurement of streaming potential coupling coefficient in sandstones saturated with natural and artificial brines at high salinity
More informationNON-SIMILAR SOLUTIONS FOR NATURAL CONVECTION FROM A MOVING VERTICAL PLATE WITH A CONVECTIVE THERMAL BOUNDARY CONDITION
NON-SIMILAR SOLUTIONS FOR NATURAL CONVECTION FROM A MOVING VERTICAL PLATE WITH A CONVECTIVE THERMAL BOUNDARY CONDITION by Asterios Pantokratoras School o Engineering, Democritus University o Thrace, 67100
More information( x) f = where P and Q are polynomials.
9.8 Graphing Rational Functions Lets begin with a deinition. Deinition: Rational Function A rational unction is a unction o the orm ( ) ( ) ( ) P where P and Q are polynomials. Q An eample o a simple rational
More informationMAGNETOHYDRODYNAMIC GO-WATER NANOFLUID FLOW AND HEAT TRANSFER BETWEEN TWO PARALLEL MOVING DISKS
THERMAL SCIENCE: Year 8, Vol., No. B, pp. 383-39 383 MAGNETOHYDRODYNAMIC GO-WATER NANOFLUID FLOW AND HEAT TRANSFER BETWEEN TWO PARALLEL MOVING DISKS Introduction by Mohammadreza AZIMI and Rouzbeh RIAZI
More informationBOUNDARY LAYER ANALYSIS ALONG A STRETCHING WEDGE SURFACE WITH MAGNETIC FIELD IN A NANOFLUID
Proceedings o the International Conerence on Mechanical Engineering and Reneable Energy 7 (ICMERE7) 8 December, 7, Chittagong, Bangladesh ICMERE7-PI- BOUNDARY LAYER ANALYSIS ALONG A STRETCHING WEDGE SURFACE
More informationNon-Darcy Displacement in Linear Composite and Radial Flow Porous Media Yu-Shu Wu, Perapon Fakcharoenphol, and Ronglei Zhang, Colorado School of Mines
SPE 130343 Non-Darcy Displacement in Linear Composite and Radial Flow Porous Media Yu-Shu Wu, Perapon Fakcharoenphol, and Ronglei Zhang, Colorado School o Mines Copyright 2010, Society o Petroleum Engineers
More informationIOSR Journal of Mathematics (IOSR-JM) e-issn: , p-issn: X.Volume12,Issue 1 Ver. III (Jan.-Feb.2016)PP
IOSR Journal o Mathematics (IOSR-JM) e-issn:78-578, p-issn: 39-765X.Volume,Issue Ver. III (Jan.-Feb.6)PP 88- www.iosrjournals.org Eect o Chemical Reaction on MHD Boundary Layer Flow o Williamson Nanoluid
More informationMicro-canonical ensemble model of particles obeying Bose-Einstein and Fermi-Dirac statistics
Indian Journal o Pure & Applied Physics Vol. 4, October 004, pp. 749-757 Micro-canonical ensemble model o particles obeying Bose-Einstein and Fermi-Dirac statistics Y K Ayodo, K M Khanna & T W Sakwa Department
More informationRELATIONSHIP BETWEEN CAPILLARY PRESSURE AND RESISTIVITY INDEX
SCA2005-4 /2 ELATIONSHIP BETWEEN CAPILLAY PESSUE AND ESISTIVITY INDEX Kewen Li *, Stanford University and Yangtz University and Wade Williams, Core Lab, Inc. * Corresponding author This paper was prepared
More informationCOMPARISON OF THERMAL CHARACTERISTICS BETWEEN THE PLATE-FIN AND PIN-FIN HEAT SINKS IN NATURAL CONVECTION
HEFAT014 10 th International Conerence on Heat Transer, Fluid Mechanics and Thermodynamics 14 6 July 014 Orlando, Florida COMPARISON OF THERMA CHARACTERISTICS BETWEEN THE PATE-FIN AND PIN-FIN HEAT SINKS
More informationDouble porosity modeling in elastic wave propagation for reservoir characterization
Stanord Exploration Project, Report 98, September 2, 1998, pages 1 243 Double porosity modeling in elastic wave propagation or reservoir characterization James G. Berryman 1 and Herbert F. Wang 2 keywords:
More informationTheory and equations for Craters from Impacts and Explosions. Keith A. Holsapple
Theory and equations or Craters rom Impacts and Explosions Keith A. Holsapple 1. Dimensionless Forms As the primary example, the volume V o a crater ormed by a given impact can be expected to depend on
More informationGas-side mass transfer coefficient of a laboratory column equipped with one sieve tray
Gas-side mass transer coeicient o a laoratory column equipped with one sieve tray Zhivko Ivanov, Zhelcho Steanov, Bogdan Bogdanov Astract: The inluence o plate geometry on the characteristics o luid low
More informationV. Electrostatics. MIT Student
V. Electrostatics Lecture 26: Compact Part of the Double Layer MIT Student 1 Double-layer Capacitance 1.1 Stern Layer As was discussed in the previous lecture, the Gouy-Chapman model predicts unphysically
More informationChapter 3 Water Flow in Pipes
The Islamic University o Gaza Faculty o Engineering Civil Engineering Department Hydraulics - ECI 33 Chapter 3 Water Flow in Pipes 3. Description o A Pipe Flow Water pipes in our homes and the distribution
More informationNatural convection in a vertical strip immersed in a porous medium
European Journal o Mechanics B/Fluids 22 (2003) 545 553 Natural convection in a vertical strip immersed in a porous medium L. Martínez-Suástegui a,c.treviño b,,f.méndez a a Facultad de Ingeniería, UNAM,
More informationSupporting Information
Supporting Information Retention and Release of Graphene Oxide in Structured Heterogeneous Porous Media under Saturated and Unsaturated Conditions Shunan Dong 1, Xiaoqing Shi 1, Bin Gao 3, Jianfeng Wu
More informationEstimating Permeability from Acoustic Velocity and Formation Resistivity Factor
5th Conference & Exposition on Petroleum Geophysics, Hyderabad-2004, India PP 582-587 and Formation Resistivity Factor Majid Nabi-Bidhendi Institute of Geophysics, University of Tehran, P.O. Box 14155-6466,
More information39.1 Gradually Varied Unsteady Flow
39.1 Gradually Varied Unsteady Flow Gradually varied unsteady low occurs when the low variables such as the low depth and velocity do not change rapidly in time and space. Such lows are very common in
More information8. INTRODUCTION TO STATISTICAL THERMODYNAMICS
n * D n d Fluid z z z FIGURE 8-1. A SYSTEM IS IN EQUILIBRIUM EVEN IF THERE ARE VARIATIONS IN THE NUMBER OF MOLECULES IN A SMALL VOLUME, SO LONG AS THE PROPERTIES ARE UNIFORM ON A MACROSCOPIC SCALE 8. INTRODUCTION
More informationHydrological geophysical relationships
International PhD Course in HYDROGEOPHYSICS Hydrological geophysical relationships Andrew Binley Lancaster University Overview In the course we will concentrate on electrical, electromagnetic and radar
More informationLecture 3 Charged interfaces
Lecture 3 Charged interfaces rigin of Surface Charge Immersion of some materials in an electrolyte solution. Two mechanisms can operate. (1) Dissociation of surface sites. H H H H H M M M +H () Adsorption
More informationFoundations of. Colloid Science SECOND EDITION. Robert J. Hunter. School of Chemistry University of Sydney OXPORD UNIVERSITY PRESS
Foundations of Colloid Science SECOND EDITION Robert J. Hunter School of Chemistry University of Sydney OXPORD UNIVERSITY PRESS CONTENTS 1 NATURE OF COLLOIDAL DISPERSIONS 1.1 Introduction 1 1.2 Technological
More informationPhysics 5153 Classical Mechanics. Solution by Quadrature-1
October 14, 003 11:47:49 1 Introduction Physics 5153 Classical Mechanics Solution by Quadrature In the previous lectures, we have reduced the number o eective degrees o reedom that are needed to solve
More informationFLUID MECHANICS. Lecture 7 Exact solutions
FLID MECHANICS Lecture 7 Eact solutions 1 Scope o Lecture To present solutions or a ew representative laminar boundary layers where the boundary conditions enable eact analytical solutions to be obtained.
More informationSite Characterization & Hydrogeophysics
Site Characterization & Hydrogeophysics (Source: Matthew Becker, California State University) Site Characterization Definition: quantitative description of the hydraulic, geologic, and chemical properties
More informationElectrostatic Forces & The Electrical Double Layer
Electrostatic Forces & The Electrical Double Layer Dry Clay Swollen Clay Repulsive electrostatics control swelling of clays in water LiquidSolid Interface; Colloids Separation techniques such as : column
More informationKey Concepts for section IV (Electrokinetics and Forces)
Key Concepts for section IV (Electrokinetics and Forces) 1: Debye layer, Zeta potential, Electrokinetics 2: Electrophoresis, Electroosmosis 3: Dielectrophoresis 4: InterDebye layer force, VanDer Waals
More informationUNCERTAINTY EVALUATION OF SINUSOIDAL FORCE MEASUREMENT
XXI IMEKO World Congress Measurement in Research and Industry August 30 eptember 4, 05, Prague, Czech Republic UNCERTAINTY EVALUATION OF INUOIDAL FORCE MEAUREMENT Christian chlegel, Gabriela Kiekenap,Rol
More informationElectrostatic Double Layer Force: Part III
NPTEL Chemical Engineering Interfacial Engineering Module 3: Lecture 4 Electrostatic Double Layer Force: Part III Dr. Pallab Ghosh Associate Professor Department of Chemical Engineering IIT Guwahati, Guwahati
More informationA NUMERICAL STUDY OF SINGLE-PHASE FORCED CONVECTIVE HEAT TRANSFER WITH FLOW FRICTION IN ROUND TUBE HEAT EXCHANGERS
www.arpapress.com/volumes/vol6issue4/ijrras_6_4_05.pd A NUMERICAL STUDY OF SINGLE-PHASE FORCED CONVECTIVE HEAT TRANSFER WITH FLOW FRICTION IN ROUND TUBE HEAT EXCHANGERS Pedram Mohajeri Khameneh 1,*, Iraj
More informationIterative Methods for Stokes/Darcy Coupling
Iterative Methods or Stokes/Darcy Coupling Marco Discacciati Ecole Polytechnique Fédérale de Lausanne Institut d Analyse et Calcul Scientiique Chair o Modelling and Scientiic Computing marco.discacciati@epl.ch
More informationTransverse vibration and instability of fluid conveying triple-walled carbon nanotubes based on strain-inertia gradient theory
Journal o Theoretical and Applied Vibration and Acoustics () 6-7 (05) Journal o Theoretical and Applied Vibration and Acoustics I S A V journal homepage: http://tava.isav.ir Transverse vibration and instability
More informationPotential changes of the cross section for rectangular microchannel with different aspect ratios
Korean J. Chem. Eng., 24(1), 186-190 (2007) SHORT COMMUNICATION Potential changes of the cross section for rectangular microchannel with different aspect ratios Hyo Song Lee, Ki Ho Kim, Jae Keun Yu, Soon
More information2015 American Journal of Engineering Research (AJER)
American Journal o Engineering Research (AJER) 2015 American Journal o Engineering Research (AJER) e-issn: 2320-0847 p-issn : 2320-0936 Volume-4, Issue-7, pp-33-40.ajer.org Research Paper Open Access The
More informationBuoyancy Driven Heat Transfer of Water-Based CuO Nanofluids in a Tilted Enclosure with a Heat Conducting Solid Cylinder on its Center
July 4-6 2012 London U.K. Buoyancy Driven Heat Transer o Water-Based CuO Nanoluids in a Tilted Enclosure with a Heat Conducting Solid Cylinder on its Center Ahmet Cihan Kamil Kahveci and Çiğdem Susantez
More informationComments on Magnetohydrodynamic Unsteady Flow of A Non- Newtonian Fluid Through A Porous Medium
Comments on Magnetohydrodynamic Unsteady Flow o A Non- Newtonian Fluid Through A Porous Medium Mostaa A.A.Mahmoud Department o Mathematics, Faculty o Science, Benha University (358), Egypt Abstract The
More informationTFY4102 Exam Fall 2015
FY40 Eam Fall 05 Short answer (4 points each) ) Bernoulli's equation relating luid low and pressure is based on a) conservation o momentum b) conservation o energy c) conservation o mass along the low
More informationChapter 8 Flow in Pipes. Piping Systems and Pump Selection
Piping Systems and Pump Selection 8-6C For a piping system that involves two pipes o dierent diameters (but o identical length, material, and roughness connected in series, (a the low rate through both
More informationDerivation of soil-specific streaming potential electrical parameters from hydrodynamic characteristics of partially saturated soils
Derivation of soil-specific streaming potential electrical parameters from hydrodynamic characteristics of partially saturated soils D. Jougnot 1, N. Linde 1, A. Revil 2,3, and C. Doussan 4 1 Institute
More informationCoupled seismoelectric wave propagation in porous media. Mehran Gharibi Robert R. Stewart Laurence R. Bentley
Coupled seismoelectric wave propagation in porous media Mehran Gharibi Robert R. Stewart Laurence R. Bentley a Introduction Seismic waves induce electric and magnetic fields. Conversion of acoustic energy
More informationdynamics of f luids in porous media
dynamics of f luids in porous media Jacob Bear Department of Civil Engineering Technion Israel Institute of Technology, Haifa DOVER PUBLICATIONS, INC. New York Contents Preface xvii CHAPTER 1 Introduction
More information774. Tribological adhesion of particles in acoustic field
774. Tribological adhesion o particles in acoustic ield Vladas Vekteris 1 Vytautas Striška Vadim Mokšin 3 Darius Ozarovskis 4 Rolandas Zaremba 5 Vilnius Gediminas Technical University Department o Machine
More informationFlow and Heat Transfer Analysis of Copper-water Nanofluid with Temperature Dependent Viscosity Past a Riga Plate
Journal o Magnetics (), 181-187 (017) ISSN (Print) 16-1750 ISSN (Online) 33-6656 https://doi.org/10.483/jmag.017...181 Flo and Heat Transer Analysis o Copper-ater Nanoluid ith Temperature Dependent Viscosity
More informationAdv. Theor. Appl. Mech., Vol. 7, 2014, no. 1, 1-20 HIKARI Ltd,
Adv. Theor. Appl. Mech., Vol. 7, 2014, no. 1, 1-20 HIKARI Ltd, www.m-hikari.com http://dx.doi.org/10.12988/atam.2014.31124 Magneto-Hydrodynamic Eect with Temperature Dependent Viscosity on Natural Convection
More informationP211 Low Frequency Modifications of Seismic Background Noise Due to Interaction with Oscillating Fluids in Porous Rocks
P11 Low Frequency Modiications o Seismic Background Noise Due to Interaction with Oscillating Fluids in Porous Rocks M. Frehner* (Geological Institute, ETH Zurich), S.M. Schmalholz (Geological Institute,
More informationStudy of full band gaps and propagation of acoustic waves in two-dimensional piezoelectric phononic plates
Study o ull band gaps and propagation o acoustic waves in two-dimensional pieoelectric phononic plates J.-C. Hsu and T.-T. Wu Institute o Applied Mechanics, National Taiwan University, No. 1, Sec. 4, Roosevelt
More informationLecture 25: Heat and The 1st Law of Thermodynamics Prof. WAN, Xin
General Physics I Lecture 5: Heat and he 1st Law o hermodynamics Pro. WAN, Xin xinwan@zju.edu.cn http://zimp.zju.edu.cn/~xinwan/ Latent Heat in Phase Changes Latent Heat he latent heat o vaporization or
More information