Bubble curtain system for prevention of seawater intrusion in coastal aquifers
|
|
- Alvin Payne
- 6 years ago
- Views:
Transcription
1 Available online at Advances in Applied Science Research, 013, 4(4):81-90 ISSN: CODEN (USA): AASRFC Bubble curtain sstem for prevention of seawater intrusion in coastal aquifers Mehdi Nehad Naderi, Masoud Rea Hessami Kermani and Gholam-Abbas Barani Department of Civil Engineering, Shahid Bahonar Universit, Kerman, Iran ABSTRACT A bubble curtain is a sstem that produces bubbles in a deliberate arrangement in water. This technique is based on bubbles of air (gas) under the water surface that act commonl as a barrier. When the bubbles rise the act as a barrier or a curtain. This paper paid to applications of this sstem for prevention of the advance of seawater and protection of environment of offshore. The multiphase flow is simulated b computational fluid dnamics method. During high level of tide bubble curtain sstem can be used simultaneous in several parallel rows of air inection in across the offshore. During low level of tide air inection rate and use of the bubble curtain sstem is reduced. The results of the numerical models show that increasing air inection rate is caused to reduce seawater. Kewords: bubble curtain, multiphase flow, computational fluid dnamic method, Prevention of seawater intrusion, Fluent Software. INTRODUCTION Bubble curtain, in its simplest form, is a circle or square tube with holes in it that air is inected under pressure into the tube and the bubbles will create a curtain of bubbles. Components needed to create a barrier bubbles: 1 - compressed air from a compressor station, - pipe with special noles incorporated and anchor blocs, 3 - levels produced b bubble curtains and 4- drain valve at the end of the nole tubes. The subects epressed about the use of bubble curtains to protect the marine environment. Saltwater intrusion in estuaries of tidal rivers is causing environmental damage. Construction of bubble curtain must be checed in across river as a wa for prevention of saltwater intrusion in estuaries of tidal rivers. In this paper is paid to two-phase flow simulation b software Fluent6.3 that freshwater input is from the left side, saltwater on the right side of the entrance and the air from vertical duct. B using of miture model and - turbulence model in software the two-phase miture is dissolved. At first the air inlet velocit is considered 0.6 meters per second then is reduced to 0. meters per second. As ou can see using of air (bubbles) curtain can be prevent from saltwater intrusion and also reduce densit in estuaries of tidal rivers. In this stud, flow is unstead with two-dimensional turbulence form. Velocit and pressure are a function of time and space. To model of the velocit and pressure fluctuations is the integrated from the Navier Stoes equation at time. In this stud, flow is stead with two-dimensional turbulence form. To model of the velocit and pressure fluctuations is the integrated from the Navier Stoes equation at time. Integration of Navier Stoes equations at time is nown Renolds equations []. Turbulence model equations are two equation models - (Standard) that have be averaged in depth [3]. equation is as one of the main sources of the limitations of accurac of the standard version of the - model and the Renolds stress model. It is interesting that - model includes a correction term that is dependent to strain with c13 constant in the equation of RNG model [4]. WillCo provided turbulence equations of -ω (standard) model [5]. 81
2 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4): Figure 1 - View of a bubble curtain in place of berthing the ship in Vancouver of Canada to reduce noise pollution [1]. Figure - Barriers (bubble) to prevent the spread of spilled oil on the water surface Figure 3- from the right 1 - the compressor station, - pipe with special noles incorporated and anchor blocs, 3 - level generated b bubble curtains to the surface, 4 - the discharge valves on end of the nole tube. MATERIALS AND METHODS 0 = w v u (1) P v f uw uv uu t u c = () P u f vw vv uv t v c = (3) g P ww vw uw t w = (4)
3 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4):81-90 Known two-equation model of - (Standard) are presented for averaged form in depth as follows [3]: h U h ν t = [( ν ) h ] hp hpv h (5) t σ h U h νt = [( ν ) h ] hc1 t σ P hp v hc t = c, P ν t Si. Si (7) ν µ = u f 1 c cµ u f v = c, c =, P, c, c 1 v = c = 3 f = = c h e* σ t c 4 u v w f f µ = 0.09, c1 = 1.44, c = 1.9, σ = 1.0, σ = 1.31 P c P v and P v are production terms as result of non-uniform distribution velocit in depth that is stronger near-bed. P is production term of turbulent inetic energ averaged in depth as result of velocit gradients in the plan. ν t is the vorte viscosit. Turbulence model is used for calculation of lateral flow into one channel and is achieved much better results in comparison with ν t for fied parameters of rotational flow [7]. c f is the bed friction coefficient. σ t is Schmidt number that shows relationship between turbulence viscosit and turbulent diffusion coefficient according to the following equation: ν t d = (9) σ t Amount ofσ t is considered 0.5 [8]. Although values of σ t are 0.5 to in variable references [9]. e * is coefficient that gives turbulence diffusion coefficient in depth b following equation [8]. d = e * hu f (10) Direct measurement of color broadcasting in the fied-width channels offers 0.15 for e *. Although Keller and Rodi achieved better solutions for the velocit and stress within the composite channels [8]. On the other hand Biglari and Sturm have been assumed e * equaled to 0.3 to get the better answer within the composite channels [9]. MCGuri 1 and Rodi have considered equaled to 3.6 [7]. In equation of RNG model includes a correction term c 1 e * σ t that is constant strain-dependent [4]. For - (RNG), we have: h U h = t c µ = , c * 1 = c ν t [( ν ) h ] hc σ 1 η η(1 ) η0, c 3 1 βη 1 * 1 P hp = 1.68, σ v 1 (. ) η = Ei Ei, η0 = Onl constant β is adustable, high levels of turbulent data are obtained near-wall. All other constants are calculated eplicitl as part of the RNG process. hc = 1.39, β = 0.01, c 1 = 1.4, n h g 1 3 (6) (8) (11) (1) h t U h = ν t ν ) h ] P σ P h [( b (13) 83
4 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4):81-90 h U h = t η c1 = Ma[0.43, ], η = s, s = η s ν t [( ν ) h ] hc1 P hc1s hc S (14) σ ν, µ = hc µ t T 1 * P = µ t s, Pb = βgi, µ t = cµ, cµ =, U = s, Pr * isi Ωi Ωi t i KU A0 As 1 1 sis si Ω = Ω, 4.04, 6 cos, cos ( 6 ),, ~ i i iω A0 = As = Φ Φ = ω ω = 3 ~ s = s 3 is s 1 u ui 1 P si = ( ), c1 = 1.44, c = 1.9, σ = 1, σ = 1., β = ( ) p,prt = 0.85 T i s s i i t µ ', P = uiu WillCo, turbulence model -ω (standard) equation to be provided as follows [6]: U t ω U t Ui * * = i β ω [( ν σ ν T ) ] (16) ω ω = α i U i βω ω 5 3 * 9 1 * ν t =, α =, β =, β =, σ =, = β ω ω ω [( ν σν T ) ] The values of the phsical properties of water are considered 998., , 418 and 0.6, respectivel, for densit, viscosit, heat capacit and thermal conductivit. Solutions of all governing equations are subect to assignment of variables correctl in the boundar nodes. In stead state problems required onl boundar condition but in unstead state problems is required the initial conditions for all nodes in the networ. Common boundar conditions in hdraulic issues include [10]: A- Inlet boundar condition: numerical models can fit the model b means of the various boundar conditions such as velocit, mass flow, etc. For eample, in modeling of flow inside a closed or open channel can be used velocit inlet as input boundar condition. B- The outlet boundar condition is considered pressure outlet equals the atmospheric pressure. If the output is chosen at a far distance from geometric constraints, and no change in direction of flow then the flow state is developed full. Using this model is caused the output surface is perpendicular to the flow and gradient is ero in the perpendicular direction on the output surface [10]. C - Wall boundar condition: the wall boundar condition is used to limit the area of between fluid and solid. The model is read for simulation b Solutions set and defining the model. The following steps show the simulation process [11]: selection methods of discretiation equation: In this paper first order upstream difference method is used for discretiation of momentum,, and ω equations and the standard method is used to find the pressure. Selection methods of the relation velocit - Pressure: this step is onl be studied segregated. In this paper is used from SIMPLE method for velocit - pressure coupling. Determine the discount factors: the discount factor values are used for control of calculated variables in the each iteration. In this paper, the default values 0.3, 1, 0.7, 0.8, 0.8 and 1 is used respectivel for the pressure, densit, momentum,, and turbulent viscosit. In this paper, the initial values of the relative pressure is considered ero And the initial values of velocit components close to the average values presented in the input stream. B completing the steps in the numerical model, we can start the introduced process of problem b defining of repeat process. The frequenc of reporting of results can be introduced before computing the numerical model. During solution process can be seen convergence of solution b the control of residues, integral of surface, statistics and values of the force. After finishing solution the computation of the unnown quantities and the results can be calculated at an point of the field and can be displaed b vector in the form, contour and profile [11]. In this paper for solution of flow is usuall introduced initial number repeat 1000 with report of ever step of the calculation that conditions for convergence of the unnown parameters were satisfied after 300 to 350 iterations. Gambit software version.3.16 is used to generate the channel geometr and meshing [1]. Model of the networ is used Quad element and the tpes of Map and Pave for pages and He elements and tpes of Map of Cooper for volumes. Inlet and outlet and wall boundar conditions and smmetr were introduced in the software. ' u ' i, i, (15) (17) 84
5 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4): Meshing model Gambit software version.3.16 is used to generate the channel geometr and meshing. Model of the networ is used Quad element and the tpes of Map and Pave for pages and He elements and tpes of Map of Cooper for volumes. Inlet and outlet and wall boundar conditions and smmetr were introduced in the software. RESULTS AND DISCUSSION The results of the numerical models show that increasing air inection rate is caused to reduce seawater intrusion to estuar of tidal rivers as figure 4 to 8. Figure 4- meshing of model and boundar conditions Figure 5- a- Velocit magnitude contours for the two phase flow for seawater intrusion from right input, bubble curtain channel and freshwater from left input (air velocit is 0.6 m/s) 85
6 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4):81-90 Figure 5- b- the velocit contours for the two-phase flow in the direction, (air velocit is 0.6 m/s) Figure 5- c- the velocit contours for the two-phase flow in the direction (air velocit is 0.6 m/s) 86
7 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4):81-90 Figure 6-a- the velocit magnitude contours for the two-phase flow (air velocit is 0. m/s) Figure 6- b- the velocit contours for the two-phase flow in the direction (air velocit is 0. m/s) 87
8 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4):81-90 Figure 6- c- the velocit contours for the two-phase flow in the direction, (air velocit is 0. m/s) Figure 7-a- the pressure contours for the two-phase flow (air velocit is 0. m/s) 88
9 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4):81-90 Figure 7-b- the pressure contours for the two-phase flow (air velocit is 0.6 m/s) Figure 8-a- the densit contours for the two-phase (air velocit is 0. m/s) 89
10 Mehdi Nehad Naderi et al Adv. Appl. Sci. Res., 013, 4(4):81-90 Figure 8- b- the densit contours for the two-phase flow (air velocit is 0.6 m/s) CONCLUSION A bubble curtain is a sstem that produces bubbles in a deliberate arrangement in water. Bubble curtain is applied for breaing the propagation of waves or prevention of the spreading of particles and other contaminants. In this paper is paid to two-phase flow simulation b software Fluent6.3 that freshwater input is from the left side, saltwater on the right side of the entrance and the air from vertical duct. B using of miture model and - turbulence model in software the two-phase miture is dissolved. At first the air inlet velocit is considered 0.6 meters per second then is reduced to 0. meters per second. The results of the numerical models show that increasing air inection rate is caused to reduce seawater intrusion. As ou can see using of air (bubbles) curtain can be prevent from saltwater intrusion and also reduce densit. REFERENCES [1] Swanson,., 004. Fish ills drive techniques for placing bridge piles. in Jun 3, 004 issue of Dail Journal of Commerce (Portland, OR). [] Renolds, O. On the Dnamical Theor of Incompressible Viscous Fluids and the Determination of the Criterion, Phil. Trans. Ro. Soc. London, 1986, [3] Rastogi, A. K., and Rodi, W. Journal of Hdraulics Division, ASCE, 1978, 104(3), [4] Yahot, V., Orsag, S.A., Thangam, S., Gatsi, T. B., and speiale, C. G. Phsics of Fluids A, 199, Vol. 4, No. 7, pp [5] Wilco, D. C. AIAA Journal, 1988, vol. 6, pp [6] McGuri, J. J., and Rodi, W. A Journal of Fluid Mechanics, 1978, 864, [7] Keller, R. J., and Rodi, W. Journal of Hdraulic Research, IAHR, 1988, 6(4), [8] Gibson, M. M., and Launder, B. E. Journal of Fluid Mechanics, 1978, 86, [9] Biglari, B., and Sturm, T. W. Journal of Hdraulic Engineering, ASCE, 1998, 14(), [10] Soltani, M. V. and Rahimi Asl,R. Computational Fluid Dnamics b Fluent Software, Tehran, Tarrah issues, 003. [11] Versteeg, H. K. and Malalaseera, W. An Introduction to Computational Fluid Dnamics, [1] GAMBIT. User s Guide, September,
Fluid Mechanics II. Newton s second law applied to a control volume
Fluid Mechanics II Stead flow momentum equation Newton s second law applied to a control volume Fluids, either in a static or dnamic motion state, impose forces on immersed bodies and confining boundaries.
More informationScale-Adaptive Simulation (SAS) Turbulence Modeling. F.R. Menter, ANSYS Germany GmbH
Scale-Adaptive Simulation (SAS) Turbulence Modeling F.. Menter, ANSYS German GmbH 1 Unstead ANS Based Models UANS (Unstead enolds averaged Navier Stoes) Methods UANS gives unphsical single mode unstead
More informationA first contact with STAR-CCM+ Comparing analytical and finite volume solutions with STAR-CCM+ simulations
A first contact with STAR-CCM+ Comparing analtical and finite volume solutions with STAR-CCM+ simulations Michael Heer Analtical Finite volumes STAR-CCM+ What is ParisTech? ParisTech is a consortium of
More informationComputational Fluid Dynamics (CFD, CHD)*
1 / 1 Computational Fluid Dnamics (CFD, CHD)* PDE (Shocks 1st); Part I: Basics, Part II: Vorticit Fields Rubin H Landau Sall Haerer, Producer-Director Based on A Surve of Computational Phsics b Landau,
More informationIntroduction For a long time, so-called wall functions has been used for calculating wall-bounded turbulent ows. It means that boundar conditions can
Helsini Universit of Technolog CFD-group/ Laborator of Applied Thermodnamics MEMO No CFD/TERMO-9-96 DATE: Ma 24,996 TITLE TEST CALCULATIONS OF VARIOUS TWO-EQUATION LOW REYNOLDS NUMBER TURBULENCE MODELS
More information7. TURBULENCE SPRING 2019
7. TRBLENCE SPRING 2019 7.1 What is turbulence? 7.2 Momentum transfer in laminar and turbulent flow 7.3 Turbulence notation 7.4 Effect of turbulence on the mean flow 7.5 Turbulence generation and transport
More informationInternational Journal of Applied Mathematics and Physics, 3(2), July-December 2011, pp Global Research Publications, India
International Journal of Applied Mathematics and Phsics, 3(), Jul-December 0, pp. 55-67 Global Research Publications, India Effects of Chemical Reaction with Heat and Mass Transfer on Peristaltic Flow
More informationUNIT 4 HEAT TRANSFER BY CONVECTION
UNIT 4 HEAT TRANSFER BY CONVECTION 4.1 Introduction to convection 4. Convection boundar laers 4..1 Hdrodnamic boundar laer over flat plate 4.. Thermal boundar laer 4..3 Concentration boundar laer 4.3 Dimensional
More informationCONSERVATION LAWS AND CONSERVED QUANTITIES FOR LAMINAR RADIAL JETS WITH SWIRL
Mathematical and Computational Applications,Vol. 15, No. 4, pp. 742-761, 21. c Association for Scientific Research CONSERVATION LAWS AND CONSERVED QUANTITIES FOR LAMINAR RADIAL JETS WITH SWIRL R. Naz 1,
More informationIncompressible Viscous Flows
Incompressible Viscous Flows Q. Choose the crect answer (i) The maximum velocit of a one-dimensional incompressible full developed viscous flow between two fixed parallel plates is 6m/s. The mean velocit
More informationLECTURE NOTES - VIII. Prof. Dr. Atıl BULU
LECTURE NOTES - VIII «LUID MECHNICS» Istanbul Technical Universit College of Civil Engineering Civil Engineering Department Hdraulics Division CHPTER 8 DIMENSIONL NLYSIS 8. INTRODUCTION Dimensional analsis
More informationChapter 4 Transport of Pollutants
4- Introduction Phs. 645: Environmental Phsics Phsics Department Yarmouk Universit hapter 4 Transport of Pollutants - e cannot avoid the production of pollutants. hat can we do? - Transform pollutants
More informationNumerical Analysis of Heat Transfer in the Unsteady Flow of a non- Newtonian Fluid over a Rotating cylinder
Bulletin of Environment, Pharmacolog and Life Sciences Bull. Env.Pharmacol. Life Sci., Vol 4 [Spl issue 1] 215: 318-323 214 Academ for Environment and Life Sciences, India Online ISSN 2277-188 Journal
More informationPHYSICAL REVIEW E 78, Lattice Boltzmann method for simulation of compressible flows on standard lattices
PHYSICAL REVIEW E 7, 016704 00 Lattice Boltzmann method for simulation of compressible flows on standard lattices Nikolaos I. Prasianakis 1, * and Ilia V. Karlin 1,, 1 Aerothermochemistr and Combustion
More informationLarge Eddy Simulation of the flow and heat transfer in a half-corrugated channel with various wave amplitudes
Int. J Heat Mass Transfer, Vol. 76 pp. 432-446, 214 Large Edd Simulation of the flow and heat transfer in a half-corrugated channel with various wave amplitudes Maram Mirzaei, Ahmad Sohankar, Lars Davidson,
More informationJoule Heating Effects on MHD Natural Convection Flows in Presence of Pressure Stress Work and Viscous Dissipation from a Horizontal Circular Cylinder
Journal of Applied Fluid Mechanics, Vol. 7, No., pp. 7-3, 04. Available online at www.jafmonline.net, ISSN 735-357, EISSN 735-3645. Joule Heating Effects on MHD Natural Convection Flows in Presence of
More informationUNSTEADY LOW REYNOLDS NUMBER FLOW PAST TWO ROTATING CIRCULAR CYLINDERS BY A VORTEX METHOD
Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference Jul 8-23, 999, San Francisco, California FEDSM99-8 UNSTEADY LOW REYNOLDS NUMBER FLOW PAST TWO ROTATING CIRCULAR CYLINDERS BY A VORTEX
More informationEntropy ISSN
Entrop 5, 7[4], 3 37 3 Entrop ISSN 99-43 www.mdpi.org/entrop/ Full Paper Second law analsis of laminar flow in a channel filled with saturated porous media: a numerical solution Kamel Hooman, Arash Ejlali
More informationMETHOD OF WATER QUALITY IMPROVEMENT BY USE OF ICE FLOE CONTROL STRUCTURE
METHOD OF WATER QUALITY IMPROVEMENT BY USE OF ICE FLOE CONTROL STRUCTURE Shunsuke Makita 1 and Hiroshi Saeki 1 Graduate School of Engineering, Hokkaido Universit, Sapporo, Japan Hokkaido Universit, Sapporo,
More informationAvailable online at ScienceDirect. Procedia Engineering 90 (2014 )
Available online at.sciencedirect.com ScienceDirect Procedia Engineering 9 (14 383 388 1th International Conference on Mechanical Engineering, ICME 13 Effects of volumetric heat source and temperature
More informationTHE HEATED LAMINAR VERTICAL JET IN A LIQUID WITH POWER-LAW TEMPERATURE DEPENDENCE OF DENSITY. V. A. Sharifulin.
THE HEATED LAMINAR VERTICAL JET IN A LIQUID WITH POWER-LAW TEMPERATURE DEPENDENCE OF DENSITY 1. Introduction V. A. Sharifulin Perm State Technical Universit, Perm, Russia e-mail: sharifulin@perm.ru Water
More informationMagnetohydrodynamic Fluid Flow Between Two Parallel Infinite Plates Subjected To An Inclined Magnetic Field Under Pressure Gradient
Journal of Multidisciplinar Engineering Science and Technolog (JMEST) Magnetohdrodnamic Fluid Flow Between Two Parallel Infinite Plates Subjected To An Inclined Magnetic Field Under Pressure Gradient Agnes
More informationCHAPTER 7 NUMERICAL MODELLING OF A SPIRAL HEAT EXCHANGER USING CFD TECHNIQUE
CHAPTER 7 NUMERICAL MODELLING OF A SPIRAL HEAT EXCHANGER USING CFD TECHNIQUE In this chapter, the governing equations for the proposed numerical model with discretisation methods are presented. Spiral
More informationTABLE OF CONTENTS CHAPTER TITLE PAGE
v TABLE OF CONTENTS CHAPTER TITLE PAGE TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES LIST OF SYMBOLS LIST OF APPENDICES v viii ix xii xiv CHAPTER 1 INTRODUCTION 1.1 Introduction 1 1.2 Literature Review
More informationChapter 2 Basic Conservation Equations for Laminar Convection
Chapter Basic Conservation Equations for Laminar Convection Abstract In this chapter, the basic conservation equations related to laminar fluid flow conservation equations are introduced. On this basis,
More informationHurricane Modeling E XPANDING C ALCULUS H ORIZON
Februar 5, 2009 :4 Hurricane Modeling E XPANDING THE Sheet number Page number can magenta ellow black C ALCULUS H ORIZON Hurricane Modeling... Each ear population centers throughout the world are ravaged
More informationNUMERICAL INVESTIGATION AND EXPERIMENTAL VALIDATION OF HEAT TRANSFER IN A SMALL SIZE SHELL AND TUBE HEAT EXCHANGER
1 M. Kirinčić, A. rp, K. Lenić: Numerical investigation and NUMERICAL INVESIGAION AND EXPERIMENAL VALIDAION OF HEA RANSFER IN A SMALL SIZE SHELL AND UBE HEA EXCHANGER Mateo Kirinčić * Anica rp Kristian
More informationScattering Properties of Gas Molecules on a Water Adsorbed Surface
Scattering Properties of Gas Molecules on a Water Adsorbed Surface Hideki Takeuchi a, Koji Yamamoto b, and Toru Hakutake c a Department of Mechanical Engineering, Kochi National College of Technolog, Nankoku
More informationNUMERICAL SIMULATION OF MIXED CONVECTIVE FLOW OVER A THREE-DIMENSIONAL HORIZONTAL BACKWARD FACING STEP
HT-FED 4 ASME/ FLUIDS ENGINEERING SUMMER CONFERENCE Charlotte, North Carolina, USA. Jul 11-15 4 5653 NUMERICAL SIMULATION OF MIXED CONVECTIVE FLOW OVER A THREE-DIMENSIONAL HORIZONTAL BACKWARD FACING STEP
More informationInternational Journal of Scientific Research and Reviews
Research article Available online www.ijsrr.org ISSN: 2279 543 International Journal of Scientific Research and Reviews Soret effect on Magneto Hdro Dnamic convective immiscible Fluid flow in a Horizontal
More information3D Numerical Simulation of Supercritical Flow in Bends of Channel
3D Numerical Simulation of Supercritical Flow in Bends of Channel Masoud. Montazeri-Namin, Reyhaneh-Sadat. Ghazanfari-Hashemi, and Mahnaz. Ghaeini- Hessaroeyeh Abstract An attempt has been made to simulate
More informationEstimation of Transverse Mixing Coefficient in Rivers and Experimental Flumes
International Research Journal of Applied and Basic Sciences 015 Available online at www.irjabs.com ISSN 51-838X / Vol 9 (): 17-180 Science Eplorer Publications Estimation of Transverse Miing Coefficient
More informationInternational Journal of Mathematical Engineering and Science ISSN : Volume 1 Issue 2
ISSN : 77-698 Volume Issue The Mathematical Structure and Analsis of an MHD Flow in Porous Media () () Naji Qatanani and Mai Musmar () Department of Mathematics, An-Najah National Universit Nablus-Palestine
More informationSimulation of Electric Fields in Small Size Divertor Tokamak Plasma Edge
Energ and Power Engineering, 21, 39-45 doi:1.4236/epe.21.217 Published Online Februar 21 (http://www.scirp.org/journal/epe) Simulation of Electric Fields in Small Size Divertor Tokamak Plasma Edge Plasma
More informationAnalysis of condenser shell side pressure drop based on the mechanical energy loss
Article Calorifics December 01 Vol.57 No.36: 4718475 doi: 10.1007/s11434-01-5558-4 Analsis of condenser shell side pressure drop based on the mechanical energ loss ZENG Hui, MENG JiAn & LI ZhiXin * Ke
More informationLocal energy losses at positive and negative steps in subcritical open channel flows
Local energ losses at positive and negative steps in subcritical open channel flows Nura Denli Toka and A Burcu Altan-Sakara* Middle East Technical niversit, Department of Civil Engineering, 63, Ankara,
More informationNUMERICAL COMPUTATION OF PARTICLE TRANSPORT IN TURBULENT FLOW FIELD IN ELECTROSTATIC PRECIPITATOR
NUMERICAL COMPUTATION OF PARTICLE TRANSPORT IN TURBULENT FLOW FIELD IN ELECTROSTATIC PRECIPITATOR Jenő SUDA, István BERTA, Gergel KRISTÓF +, Tamás LAJOS # Ph.D. Student, + Assistant, # Professor, Department
More informationCombined tidal and wind driven flows and residual currents
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Combined tidal and wind driven flows and residual currents 1 Lars Erik Holmedal, Hong Wang Abstract : The effect of a residual current on the combined
More informationA NEW APPROACH TO TREAT THE RANS-LES
ETMM: th International ERCOFTAC Smposium on Engineering, Marbella, 7-9 September 4 A NEW APPROACH TO TREAT THE RANS-LES INTERFACE IN PANS Lars Davidson Div. of Fluid Dnamics, Dept. of Applied Mechanics
More informationHeat and Mass Transfer Flow of MHD Viscous Dissipative Fluid in a Channel with a Stretching and Porous Plate
Appl. Math. Inf. Sci. Lett. 5, No. 3, 8-87 (27) 8 Applied Mathematics & Information Sciences Letters An International Journal http://dx.doi.org/.8576/amisl/53 Heat and Mass Transfer Flow of MHD Viscous
More informationCFD Analysis of High Temperature and High Velocity System: Plasma Torch
CFD Analysis of High Temperature and High Velocity System: Plasma Torch Abhishek Pratap Singh Bhadauria 1 1 Department of Mechanical Engineering, K. J. Somaiya College of Engineering, Mumbai, Maharashtra,
More informationSelected Papers from the WSEAS Conferences in Spain, September 2008 Santander, Cantabria, Spain, September 23-25, 2008
Comparisons between Velocit Profiles According to the Modified and the Navier-Stokes Equations of Motion and the Eperimental Measurements for Laminar Boundar Laer Over a Flat Plate Matthew J. Inkman, and
More informationSTABILIZED FEM SOLUTIONS OF MHD EQUATIONS AROUND A SOLID AND INSIDE A CONDUCTING MEDIUM
Available online: March 09, 2018 Commun. Fac. Sci. Univ. Ank. Ser. A1 Math. Stat. Volume 68, Number 1, Pages 197 208 (2019) DOI: 10.1501/Commua1_0000000901 ISSN 1303 5991 http://communications.science.ankara.edu.tr/index.php?series=a1
More informationNOTES ON OPEN CHANNEL FLOW
NOTES ON OPEN CHANNEL FLOW Prof. Marco Pilotti DICATAM, niversità degli Studi di Brescia Profili di moto permanente in un canale e in una serie di due canali - Boudine, 86 OPEN CHANNEL FLOW: uniform motion
More informationSimulation and Experimental Validation of Chaotic Behavior of Airflow in a Ventilated Room
Simulation and Eperimental Validation of Chaotic Behavior of Airflow in a Ventilated Room Jos van Schijndel, Assistant Professor Eindhoven Universit of Technolog, Netherlands KEYWORDS: Airflow, chaos,
More informationCFD study for cross flow heat exchanger with integral finned tube
International Journal of Scientific and Research Publications, Volume 6, Issue 6, June 2016 668 CFD study for cross flow heat exchanger with integral finned tube Zena K. Kadhim *, Muna S. Kassim **, Adel
More informationME 321: FLUID MECHANICS-I
6/07/08 ME 3: LUID MECHANI-I Dr. A.B.M. Toufique Hasan Professor Department of Mechanical Engineering Bangladesh Universit of Engineering & Technolog (BUET), Dhaka Lecture- 4/07/08 Momentum Principle teacher.buet.ac.bd/toufiquehasan/
More informationDEVELOPMENT OF A CARTESIAN GRID BASED CFD SOLVER (CARBS) by A.M. Vaidya, N.K. Maheshwari and P.K. Vijayan Reactor Engineering Division
BARC/2013/E/023 BARC/2013/E/023 DEVELOMENT O A CARTESIAN GRID BASED CD SOLVER (CARBS) b A.M. Vaida, N.K. Maheshari and.k. Vijaan Reactor Engineering Division BARC/2013/E/023 GOVERNMENT O INDIA ATOMIC ENERGY
More informationEFFECTS OF SWEEP ANGLES AND ANGLES OF ATTACK ON JUNCTION-FLOW PATTERNS
4 Journal of Marine Science and Technolog, Vol., No., pp. 4- (4) DOI:.69/JMST-3-35- EFFECTS OF SWEEP ANGLES AND ANGLES OF ATTACK ON JUNCTION-FLOW PATTERNS Kuo-Ching San, Ying-Zong Lin, and Shun-Chang Yen
More informationConservation of Linear Momentum for a Differential Control Volume
Conservation of Linear Momentum for a Differential Control Volume When we applied the rate-form of the conservation of mass equation to a differential control volume (open sstem in Cartesian coordinates,
More informationUnsteady free MHD convection flow past a vertical porous plate in slip-flow regime under fluctuating thermal and mass diffusion *
CHAPTER 4 Unstead free MHD convection flow past a vertical porous plate in slip-flow regime under fluctuating thermal and mass diffusion * 4. Nomenclature A : Suction parameter C : Dimensionless species
More informationPROPOSAL OF HEAT EXCHANGER IN MICRO COGENERATION UNIT, CONFIGURATION WITH BIOMASS COMBUSTION. Jozef HUŽVÁR, Patrik NEMEC
PROPOSAL OF HEAT EXCHANGER IN MICRO COGENERATION UNIT, CONFIGURATION WITH BIOMASS COMBUSTION Jozef HUŽVÁR, Patri NEMEC Authors: Worplace: Jozef Hužvár, MSc. Eng. Patri Nemec, MSc. Eng. Faculty of Mechanical
More informationModule 1 : The equation of continuity. Lecture 4: Fourier s Law of Heat Conduction
1 Module 1 : The equation of continuit Lecture 4: Fourier s Law of Heat Conduction NPTEL, IIT Kharagpur, Prof. Saikat Chakrabort, Department of Chemical Engineering Fourier s Law of Heat Conduction According
More informationOn the Effect of the Boundary Conditions and the Collision Model on Rarefied Gas Flows
On the Effect of the Boundar Conditions and the Collision Model on Rarefied Gas Flows M. Vargas a, S. Stefanov a and D. Valougeorgis b a Institute of Mechanics, Bulgarian Academ of Sciences, Acad. G. Bonchev
More informationHEAT AND MASS TRANSFER OF UNSTEADY MHD FLOW OF KUVSHINSKI FLUID WITH HEAT SOURCE/SINK AND SORET EFFECTS
International Journal of Mechanical Engineering and Technolog (IJMET) Volume 9, Issue 9, September 2018, pp. 1064 1077, Article ID: IJMET_09_09_116 Available online at http://www.iaeme.com/ijmet/issues.asp?jtpe=ijmet&vtpe=9&itpe=9
More informationInvestigation of Flow Profile in Open Channels using CFD
Investigation of Flow Profile in Open Channels using CFD B. K. Gandhi 1, H.K. Verma 2 and Boby Abraham 3 Abstract Accuracy of the efficiency measurement of a hydro-electric generating unit depends on the
More informationComputational Fluid Dynamics Based Analysis of Angled Rib Roughened Solar Air Heater Duct
Research Article International Journal of Thermal Technologies ISSN 2277-4114 2013 INPRESSCO. All Rights Reserved. Available at http://inpressco.com/category/ijtt Computational Fluid Dynamics Based Analysis
More informationVISCO-ELASTIC FLUID FLOW WITH HEAT AND MASS TRASNFER IN A VERTICAL CHANNEL THROUGH A POROUS MEDIUM
Volume 2, No. 1, Januar 214 Journal of Global Research in Mathematical Archives RESEARCH PAPER Available online at http://www.jgrma.info VISCO-ELASTIC FLUID FLOW WITH HEAT AND MASS TRASNFER IN A VERTICAL
More informationNumerical Simulation Of Fluid Flow And Heat Transfer Of Supercritical Pressure
Numerical Simulation Of Fluid Flow And Heat Transfer Of Supercritical Pressure Namory Camara Department of physics, Faculty of Science and Techniques, USTTB Bamao, Mali namorymcamara@yahoo.fr Lu Huilin
More informationWater Flow in Open Channels
The Islamic Universit of Gaza Facult of Engineering Civil Engineering Department Hdraulics - ECIV 33 Chapter 6 Water Flow in Open Channels Introduction An open channel is a duct in which the liquid flows
More informationCorrespondence should be addressed to S. M. Abo-Dahab,
Mathematical Problems in Engineering Volume, Article ID 58, 8 pages doi:.55//58 Research Article Analtical Solution of Thermal Radiation and Chemical Reaction Effects on Unstead MHD Convection through
More informationTowards Higher-Order Schemes for Compressible Flow
WDS'6 Proceedings of Contributed Papers, Part I, 5 4, 6. ISBN 8-867-84- MATFYZPRESS Towards Higher-Order Schemes for Compressible Flow K. Findejs Charles Universit, Facult of Mathematics and Phsics, Prague,
More informationModelling Axial Flow Generation and Profile Evolution in the CSDX Linear Device R. J. Hajjar, P. H. Diamond, G. R. Tynan, R. Hong, S.
Modelling Axial Flow Generation and Profile Evolution in the CSDX Linear Device R. J. Hajjar, P. H. Diamond, G. R. Tnan, R. Hong, S. Thakur This material is based upon work supported b the U.S. Department
More informationMagnetic Field and Chemical Reaction Effects on Convective Flow of
Communications in Applied Sciences ISSN 221-7372 Volume 1, Number 1, 213, 161-187 Magnetic Field and Chemical Reaction Effects on Convective Flow of Dust Viscous Fluid P. Mohan Krishna 1, Dr.V.Sugunamma
More informationComputational fluid dynamics study of flow depth in an open Venturi channel for Newtonian fluid
Computational fluid dynamics study of flow depth in an open Venturi channel for Newtonian fluid Prasanna Welahettige 1, Bernt Lie 1, Knut Vaagsaether 1 1 Department of Process, Energy and Environmental
More informationESCI 485 Air/sea Interaction Lesson 5 Oceanic Boundary Layer
ESCI 485 Air/sea Interaction Lesson 5 Oceanic Boundar Laer References: Descriptive Phsical Oceanograph, Pickard and Emer Introductor Dnamical Oceanograph, Pond and Pickard Principles of Ocean Phsics, Apel
More informationA FLOW-CONDITION-BASED INTERPOLATION MIXED FINITE ELEMENT PROCEDURE FOR HIGHER REYNOLDS NUMBER FLUID FLOWS
Mathematical Models and Methods in Applied Sciences Vol. 12, No. 4 (2002) 525 539 c World Scientific Publishing Compan A FLOW-CONDITION-BASED INTERPOLATION MIXED FINITE ELEMENT PROCEDURE FOR HIGHER REYNOLDS
More informationFluid Mechanics for International Engineers HW #4: Conservation of Linear Momentum and Conservation of Energy
2141-365 Fluid Mechanics for International Engineers 1 Problem 1 RTT and Time Rate of Change of Linear Momentum and The Corresponding Eternal Force Notation: Here a material volume (MV) is referred to
More informationThe Gas-assisted Expelled Fluid Flow in the Front of a Long Bubble in a Channel
C. H. Hsu, P. C. Chen,. Y. ung, G. C. uo The Gas-assisted Epelled Fluid Flow in the Front of a Long Bubble in a Channel C.H. Hsu 1, P.C. Chen 3,.Y. ung, and G.C. uo 1 1 Department of Mechanical Engineering
More informationCFD modeling of the effect of absorbent size on absorption performance of a packed bed column
Korean J. Chem. Eng., 25(3), 395-401 (2008) SHORT COMMUNICATION CFD modeling of the effect of absorbent size on absorption performance of a packed bed column Masoud Rahimi and Mohsen Mohseni CFD research
More informationExperimental study of a round jet in cross-flow by means of PIV
Experimental stud of a round jet in cross-flow b means of PIV Gennaro Cardone, Francesco G. Nese and T. Astarita Dipartimento di Energetica TErmofluidodinamica applicata e Condizionamenti Ambientali DETEC,
More informationMathematical Modeling on MHD Free Convective Couette Flow between Two Vertical Porous Plates with Chemical Reaction and Soret Effect
International Journal of Advanced search in Phsical Science (IJARPS) Volume, Issue 5, September 4, PP 43-63 ISSN 349-7874 (Print) & ISSN 349-788 (Online) www.arcjournals.org Mathematical Modeling on MHD
More informationRANGE CONTROL MPC APPROACH FOR TWO-DIMENSIONAL SYSTEM 1
RANGE CONTROL MPC APPROACH FOR TWO-DIMENSIONAL SYSTEM Jirka Roubal Vladimír Havlena Department of Control Engineering, Facult of Electrical Engineering, Czech Technical Universit in Prague Karlovo náměstí
More information1. Introduction. Keywords Compound channel, Momentum transfer, Relative roughness, Relative depth, Relative width
International Journal of Hydraulic Engineering, (): -8 DOI:.9/j.ijhe.. Investigating the Effect of and Relative Roughness on Momentum Transfer in Symmetric Rectangular Compound Channels with Varius Relative
More informationExperimental and CFD analysis of flow through venturimeter to determine the coefficient of discharge
Experimental and CFD analysis of flow through venturimeter to determine the coefficient of discharge Nikhil Tamhankar Amar Pandhare Ashwinkumar Joglekar Vaibhav Bansode Abstract- The pressure distribution
More informationEffects of wall properties and heat transfer on the peristaltic transport of a jeffrey fluid in a channel
Available online at www.pelagiaresearchlibrar.com Advances in Applied Science Research,, 4(6):59-7 ISSN: 976-86 CODEN (USA): AASRFC Effects of wall properties and heat transfer on the peristaltic transport
More informationNumerical Computation of Inception Point Location for Flat-sloped Stepped Spillway
International Journal of Hydraulic Engineering 2013, 2(3): 47-52 DOI: 10.5923/j.ijhe.20130203.03 Numerical Computation of Inception Point Location for Flat-sloped Stepped Spillway Bentalha Chakib Department
More informationChemical Reaction and Viscous Dissipation Effects on an Unsteady MHD Flow of Heat and Mass Transfer along a Porous Flat Plate
International Journal of Scientific and Innovative Mathematical Research (IJSIMR) Volume 2 Issue 2 December 24 PP 977-988 ISSN 2347-37X (Print) & ISSN 2347-342 (Online) www.arcjournals.org Chemical Reaction
More informationThe Fluid Flow in the T-Junction. The Comparison of the Numerical Modeling and Piv Measurement
Available online at www.sciencedirect.com Procedia Engineering 39 (2012 ) 19 27 XIIIth International Scientific and Engineering Conference HERVICON-2011 The Fluid Flow in the T-Junction. The Comparison
More informationA high order Padé ADI method for unsteady convection-diffusion equations
Center for Turbulence Research Annual Research Briefs 2005 85 A high order Padé ADI method for unstead convection-diffusion equations B D. You 1. Motivation and objectives The unstead convection-diffusion
More informationNumerical solution of the flow in the gas transfer system of an industrial unit
Technical Journal of Engineering and Applied Sciences Available online at www.tjeas.com 213 TJEAS Journal-213-3-24/3688-3694 ISSN 251-853 213 TJEAS Numerical solution of the flow in the gas transfer system
More informationCHAPTER-III CONVECTION IN A POROUS MEDIUM WITH EFFECT OF MAGNETIC FIELD, VARIABLE FLUID PROPERTIES AND VARYING WALL TEMPERATURE
CHAPER-III CONVECION IN A POROUS MEDIUM WIH EFFEC OF MAGNEIC FIELD, VARIABLE FLUID PROPERIES AND VARYING WALL EMPERAURE 3.1. INRODUCION Heat transer studies in porous media ind applications in several
More informationEXPERIMENTAL AND NUMERICAL STUDIES OF A SPIRAL PLATE HEAT EXCHANGER
THERMAL SCIENCE: Year 2014, Vol. 18, No. 4, pp. 1355-1360 1355 EXPERIMENTAL AND NUMERICAL STUDIES OF A SPIRAL PLATE HEAT EXCHANGER by Rangasamy RAJAVEL Department of Mechanical Engineering, AMET University,
More informationEFFECTS OF HEAT AND MASS TRANSFER FLOW OF A JEFFREY FLUID THROUGH A VERTICAL DEFORMABLE POROUS STRATUM
International Journal o Mechanical Engineering and Technolog (IJMET) Volume 9, Issue, October 8, pp. 8 35, Article ID: IJMET_9 Available online at http://www.iaeme.com/ijmet/issues.asp?jtpe=ijmet&vtpe=9&itpe=
More informationPredictionof discharge coefficient of Venturimeter at low Reynolds numbers by analytical and CFD Method
International Journal of Engineering and Technical Research (IJETR) ISSN: 2321-0869, Volume-3, Issue-5, May 2015 Predictionof discharge coefficient of Venturimeter at low Reynolds numbers by analytical
More informationAN EFFICIENT MOVING MESH METHOD FOR A MODEL OF TURBULENT FLOW IN CIRCULAR TUBES *
Journal of Computational Mathematics, Vol.27, No.2-3, 29, 388 399. AN EFFICIENT MOVING MESH METHOD FOR A MODEL OF TURBULENT FLOW IN CIRCULAR TUBES * Yin Yang Hunan Ke Laborator for Computation and Simulation
More informationApply mass and momentum conservation to a differential control volume. Simple classical solutions of NS equations
Module 5: Navier-Stokes Equations: Appl mass and momentum conservation to a differential control volume Derive the Navier-Stokes equations Simple classical solutions of NS equations Use dimensional analsis
More informationVelocity Limit in DPD Simulations of Wall-Bounded Flows
Velocit Limit in DPD Simulations of Wall-Bounded Flows Dmitr A. Fedosov, Igor V. Pivkin and George Em Karniadakis Division of Applied Mathematics, Brown Universit, Providence, RI 2912 USA Abstract Dissipative
More informationPrediction of Performance Characteristics of Orifice Plate Assembly for Non-Standard Conditions Using CFD
International Journal of Engineering and Technical Research (IJETR) ISSN: 2321-0869, Volume-3, Issue-5, May 2015 Prediction of Performance Characteristics of Orifice Plate Assembly for Non-Standard Conditions
More informationPan Pearl River Delta Physics Olympiad 2005
1 Jan. 29, 25 Morning Session (9 am 12 pm) Q1 (5 Two identical worms of length L are ling on a smooth and horizontal surface. The mass of the worms is evenl distributed along their bod length. The starting
More informationPower Transformer Winding Thermal Analysis Considering Load Conditions and Type of Oil
International Journal of Material and Mechanical Engeerg Vol. 1 Iss. 6, November 01 Power Transformer Wdg Thermal Analsis Considerg Load Conditions and Tpe of Oil M.A.Taghihani Department of Engeerg, Imam
More informationABSTRACT I. INTRODUCTION
2016 IJSRSET Volume 2 Issue 4 Print ISSN : 2395-1990 Online ISSN : 2394-4099 Themed Section: Engineering and Technology Analysis of Compressible Effect in the Flow Metering By Orifice Plate Using Prasanna
More informationTransactions on Engineering Sciences vol 18, 1998 WIT Press, ISSN
Simulation of natural convection in a reservoir P. Jelmek*, V. Havlik\ R. Cerny\ P. Pfikryl" * Czech Technical University, Faculty of Civil Engineering, Department of Physics, Thdkurova 7, 166 29 Prague
More informationReview of the Fundamentals of Groundwater Flow
Review of te Fundamentals of Groundwater Flow Darc s Law 1 A 1 L A or L 1 datum L : volumetric flow rate [L 3 T -1 ] 1 : draulic ead upstream [L] A : draulic ead downstream [L] : draulic conductivit [L
More informationHydrodynamic Characteristics of Gradually Expanded Channel Flow
International Journal of Hydraulic Engineering 2013, 2(2): 21-27 DOI: 10.5923/j.ijhe.20130202.01 Hydrodynamic Characteristics of Gradually Expanded Channel Flow Edward Ching-Rue y LUO Department of Civil
More informationNUMERICAL SIMULATION AND MODELING OF UNSTEADY FLOW AROUND AN AIRFOIL. (AERODYNAMIC FORM)
Journal of Fundamental and Applied Sciences ISSN 1112-9867 Available online at http://www.jfas.info NUMERICAL SIMULATION AND MODELING OF UNSTEADY FLOW AROUND AN AIRFOIL. (AERODYNAMIC FORM) M. Y. Habib
More informationON THE WALL BOUNDARY CONDITION FOR COMPUTING TURBULENT HEAT TRANSFER WITH K ω MODELS
Proceedings of the ASME Heat Transfer Division - 2 HTD-Vol. 366-5 Nov 5-1, 2, Orlando, Florida, USA ON THE WALL BOUNDARY CONDITION FOR COMPUTING TURBULENT HEAT TRANSFER WITH K ω MODELS J. Bredberg Dept.
More informationR. SHAYMAA ABDUL MUTTALEB ALHASHIMI
www.semargroups.org, www.ijsetr.com ISSN 2319-8885 Vol.02,Issue.15, November-2013, Pages:1682-1687 CFD Modeling of Flow over Ogee Spillway by Using Different Turbulence DR. SHAYMAA ABDUL MUTTALEB ALHASHIMI
More informationSHORT PLANE BEARINGS LUBRICATION APPLIED ON SILENT CHAIN JOINTS
Bulletin of the Transilvania Universit of Braşov Vol. 9 (58) No. - Special Issue 016 Series I: Engineering Sciences SHORT PLANE BEARINGS LUBRICATION APPLIED ON SILENT CHAIN JOINTS L. JURJ 1 R. VELICU Abstract:
More informationInternational Journal of Scientific & Engineering Research, Volume 6, Issue 5, May ISSN
International Journal of Scientific & Engineering Research, Volume 6, Issue 5, May-2015 28 CFD BASED HEAT TRANSFER ANALYSIS OF SOLAR AIR HEATER DUCT PROVIDED WITH ARTIFICIAL ROUGHNESS Vivek Rao, Dr. Ajay
More information