U ms = U mf (gD c ) 0.5
|
|
- Amanda Greer
- 6 years ago
- Views:
Transcription
1 Indian Journal of Cheical Technology Vol. 15, January 2008, pp Prediction of iniu slugging velocity, bubbling bed index and range of bubbling fluidization in cylindrical and non-cylindrical gas-solid fluidized beds R K Singh* & G K Roy Departent of Cheical Engineering, National Institute of Technology, Rourkela , India Eail: rksingh@nitrkl.ac.in Received 13 March 2006; revised received 23 October 2007; accepted 30 October 2007 A bubbling fluidization regie exists between the iniu bubbling velocity and the iniu slugging velocity. Experiental investigations have been carried out for the deterination of the iniu slugging velocity and the range of bubbling fluidization for non-spherical particles in cylindrical and non-cylindrical beds. In the present paper, correlations have been developed for the prediction of iniu slugging velocity for gas-solid fluidization in cylindrical and non-cylindrical (viz. seicylindrical, hexagonal and square) beds for non-spherical particles fluidized by air at abient conditions. The bed aterials used have varied diaeter (324 to 925 icron) and density (1500 to 4800 kg/ 3 ). Experiental values of the iniu slugging velocity have been copared with the values calculated by the developed equations and also with the values calculated by Geldart s equation. A fairly good agreeent has been obtained between the calculated and the experiental values. Based on the experiental data, it is concluded that, under siilar operating conditions iniu slugging velocity and iniu bubbling velocity are axiu in case of a sei-cylindrical conduit and iniu in case of a square one. It is further observed that the range of bubbling fluidization is axiu in case of a seicylindrical bed for the identical operating conditions. Keywords: Miniu slugging velocity, Bubbling bed index, Range of bubbling fluidization, Non-cylindrical beds With increase in fluid velocity beyond the iniu fluidization condition, gas-fluidized systes exhibit either only a bubbling fluidization or a non-bubbling fluidization. Non-bubbling fluidiza-tion is also known as particulate or hoogeneous fluidization and bubbling fluidization is often referred to as aggregative or heterogeneous fluidization. Geldart s classification of powders 1 gives the relationship between the difference of the solid and the gas densities and the particle diaeter. Bed behaviour is obtained according to a practical classification, suggested by Abrahasen and Geldart 2. When the superficial gas velocity is higher than that necessary to obtain the incipient fluidization, the bed behaviour is classified under any of the following five categories viz. particulate, bubbling, slugging, turbulent and fast fluidization. Fluidized beds of fine powders exhibit soe particulate behaviour above the iniu fluidization velocity. For these systes, it is possible to obtain hoogeneous expansion without bubbles. The upper liit of the velocity for particulate state corresponds to the appearance of the first bubble and is called the iniu bubbling velocity. The gas velocity at which the bubble size equals to the diaeter of the bed, the bed aterial is lifted by the fluid in for of short discrete cylinders and the phenoenon is tered as slug foration. The superficial gas velocity, at which the slug foration starts, is known as the iniu slugging velocity. The span (U s U b ) of effective gas solid fluidization is the bubbling regie. The bubbling fluidization exists between the iniu bubbling velocity and the iniu slugging velocity. When the bubbles fored at the distributor rise, they grow in size. At higher gas flow rate, the size of the bubble is large enough to cover the entire bed diaeter and the slug is thus fored. Stewart and Davidson 3 have given a correlation for the iniu slugging velocity as: U s = U f (gD c ) 0.5 (1) The bed ust sufficiently be deep for coalescing bubbles to attain the size of a slug. Baeyens and Geldart 4 felt that the above condition is applicable only if H f > 1.3 D c in SI unit, otherwise the iniu slugging velocity is expressed as: U s = U f (g D c ) (1.3 D c H f ) 2 (2) Queiroz et al. 5 have verified the possibility of fluidization in the slugging regie by the dynaics of gas bubble growth in the bed. Singh and Roy 6 have presented correlations for the prediction of the iniu bubbling velocity, the fluidization index
2 86 INDIAN J. CHEM. TECHNOL., JANUARY 2008 and the range of particulate fluidization in cylindrical and non-cylindrical beds. In view of liited inforation available on the quantification of bubbling fluidization, in the present work, equations have been developed for the prediction of iniu slugging velocity for nonspherical bed aterials in cylindrical and noncylindrical fluidizers. Also a bubbling bed index and the range of bubbling fluidization have been calculated for a better understanding of the flow dynaics for the said regie in case of gas-solid fluidization. Experiental Procedure The experiental set-up has been given elsewhere 7. All the cylindrical and non-cylindrical fluidizers were ade of transparent acrylic resin so that the bed behaviour could be observed clearly. For unifor distribution of fluidizing ediu in the bed, a caling section with glass beads was used at the entrance of the colun. The diensions of the beds used and the properties of the bed aterials are given in Tables 1 and 2 respectively 8. A known aount of the bed aterial was charged to the colun fro the top. The reproducible static bed was obtained after fluidizing the bed gradually and allowing it to settle slowly. The copressed dry air was aditted to the colun fro the constant pressure tank. The bed pressure drop and the bed heights were recorded against the gradual change of flow till the fluidization condition was reached. The iniu fluidization velocity was obtained fro the plot of pressure drop versus air ass velocity. The air flow rate was increased slowly after the iniu fluidization condition and the point at which the first bubble appeared was noted as the iniu bubbling velocity. The air flow rate was further increased and the point at which the slug foration started was noted as the iniu slugging velocity. Developent of correlations The correlations for iniu slugging velocity have been developed with the help of relevant diensionless groups involving interacting paraeters like, the particle diaeter, the equivalent diaeter of the colun, the packed bed height, the density of the particles and of the fluidizing ediu. For diensional analysis, the iniu slugging velocity, U s, can be related to the syste paraeters as follows: Type of bed Sei-cylindrical Table 1 Diension of the beds eployed Cross-sectional area, Table 2 Properties of bed aterials d *10 4, Miniu A. bed Material ρ p, kg/ 3 p fluidization velocity, U f, /s Size/diaeter, (diaeter) (diaeter) (side) (side) Miniu bubbling velocity, U b, /s Doloite Doloite Doloite Doloite Doloite Chroite Coal B. Sei-cylindrical bed Doloite Doloite Doloite Doloite Doloite Chroite Coal C. bed Doloite Doloite Doloite Doloite Doloite Chroite Coal D. bed Doloite Doloite Doloite Doloite Doloite Chroite Coal
3 NOTES 87 U s = f [d p /D c, D c /h s, ρ p /ρ f ] Eq. (3) can be rewritten as U s = k[(d p /D c ) a (D c /h s ) b (ρ p /ρ f ) c ] n (3) (4) where k is the coefficient and a, b, c and n are the exponents. The effect of the individual group on the iniu slugging velocity has been separately evaluated for different conduits by plotting of U s against the individual group on logarithic plots and the values of exponents a, b and c have been obtained fro the slope of these plots. The values of k and n have been obtained by plotting log U s against log [(d p /D c ) a (D c /h s ) b (ρ p /ρ f ) c ] for different conduits presented in Table 3. On putting the values of a, b, c, k and n in Eq. (4), the correlations obtained for different conduits are as follows: and also with the values calculated by Geldart s Equation (Eq. 2) in Figs 1 to 4. Fairly good agreeent has been found to exist between the calculated and experiental values. The values of iniu slugging velocity calculated by Geldart s equation are close to the experiental values for saller and lighter particles, but the values calculated by the proposed bed; U s = 0.136(d p /d c ) (D c /h s ) (ρ p /ρ f ) Sei-cylindrical bed; U s = 0.269(d p /D c ) (D c /h s ) (ρ p /ρ f ) bed; U s = 0.290(d p /D c ) (D c /h s ) (ρ p /ρ f ) bed; U s = 0.863(d p /D c ) 1.25 (D c /h s ) (ρ p /ρ f ) 0.78 (5) (6) (7) (8) Fig. 1 Coparison of experiental and calculated values of iniu slugging velocity cylindrical bed With the help of Eqs (5) to (8), the iniu slugging velocities have been calculated for different data points and copared with their experiental values. Bubbling bed index Identical to fluidization index which gives the idea of the range of particulate fluidization in the for of a ratio of the iniu bubbling velocity to iniu fluidization velocity, it is proposed to define a ter Bubbling Bed Index which is the ratio of the iniu slugging velocity and the iniu bubbling velocity and can predict the range of bubbling fluidization for gas-solid syste. Results and Discussion The values of iniu slugging velocities calculated with the help of Eqs (5) to (8) have been copared with their respective experiental values Fig. 2 Coparison of experiental and calculated values of iniu slugging velocity sei-cylindrical bed Table 3 Values of constants and exponents for different beds Bed Constant, k a b c n
4 88 INDIAN J. CHEM. TECHNOL., JANUARY 2008 Table 4 Coparison of iniu slugging velocity (.s -1 ) in different beds kg Table 5 Coparison of bubbling bed index in different beds Fig. 3 Coparison of experiental and calculated values of iniu slugging velocity hexagonal bed Kg Table 6 Coparison of range of bubbling fluidization (.s -1 ) in different beds kg. -3 Fig. 4 Coparison of experiental and calculated values of iniu slugging velocity square bed equations agree well for all the range of particles used in the experientation. Miniu slugging velocity, bubbling bed index and the range of bubbling fluidization in different conduits have been copared in Tables 4 to 6 respectively. Based on the experiental data it is concluded that, under siilar operating conditions, the iniu slugging and iniu bubbling velocities are axiu in case of the sei-cylindrical conduit and iniu in case of the square one. It is further observed that, the bubbling bed index is axiu in case of square bed but the range of bubbling fluidization is axiu in case of the sei-cylindrical bed for identical operating conditions. In view of the fact that the range of bubbling fluidization is axiu in case of sei-cylindrical bed, this will, theref, be a better substitute for the conventional one when bubbling fluidization is desired to eet the process requireent. Noenclature d p : Particle diaeter [] D c : Colun diaeter [] G f: : Fluid ass velocity [kg.h ] G f: : Fluid ass velocity at iniu [kg.h ] fluidization h s : Static bed height [] ρ f : Fluid (ediu) density [kg. -3 ] ρ p : Particle density [kg. -3 ] U f : Miniu fluidization velocity [ s -1 ] U b : Miniu bubbling velocity [s -1 ] U s : Miniu slugging velocity [s -1 ]
5 NOTES 89 References 1 Geldart D, Powder Technol, 7 (1973) Abrahasen A R & Geldart D, Powder Technol, 26 (1980) Stewart P S B & Davidson J F, Powder Technol, 1 (1967) Baeyens J & Geldart D, Che Eng Sci, 29 (1974) Queiroz C A R, Cavalho R J & Moura F J, Brazilian J Che Eng, 22(1) (2005) Singh R K & Roy G K, Powder Technol, 159 (2005) Singh R K & Roy G K, Indian J Che Technol, 13 (2006) Singh R K, Studies on certain aspects of gas-solid fluidization in non-cylindrical beds, Ph. D. Thesis, Sabalpur University, 1997.
Published in Powder Technology, 2005
Published in Powder Technology, 2005 Prediction of minimum bubbling velocity, fluidization index and range of particulate fluidization for gas solid fluidization in cylindrical and non-cylindrical beds
More informationPrediction Of Minimum Fluidization Velocity And Bed Pressure Drop In Non-circular Gas-solid Fluidized Bed
Indian Chem. Engr., Section A. Vol. 37, Nos. 1,2 (1995) Prediction Of Minimum Fluidization Velocity And Bed Pressure Drop In Non-circular Gas-solid Fluidized Bed R. K. SINGH, A. SURYANARAYANA and G. K.
More informationEffect of column diameter on dynamics of gas-solid fluidized bed: A statistical approach
Indian Journal of Chemical Technology Vol. 16, January 2009, pp. 17-24 Effect of column diameter on dynamics of gas-solid fluidized bed: A statistical approach Y K Mohanty*, G K Roy & K C Biswal Department
More informationThe Development of a Generalised Jet Mixing Model for the Derivation of Exclusion Zones in Hazardous Area Classification
The Developent of a Generalised Jet Mixing Model for the Derivation of Exclusion Zones in Hazardous Area Classification Katherine McCobe, Peter Tait, Jason Whitley LogiCas Ltd. 33 Boundary Street, Spring
More informationEffect of Polymer Solutions on Efflux Time for Two Exit Pipe System
Effect of Polyer Solutions on Efflux Tie for Two Exit Pipe Syste Abstract: A. UMA DEVI a, D.V. PADMA a & CH. V. SUBBARAO a a Departent of Cheical Engineering, MVGR College of Engineering, Vizianagara-535005,
More informationSTUDY OF THERMAL DIFFUSIVITY IN HEAT-INSULATING MATERIALS
STUDY OF THERMAL DIFFUSIVITY IN HEAT-INSULATING MATERIALS PAVLA ŠTEFKOVÁ, OLDŘICH ZMEŠKAL Institute of Physical and Applied Cheistry, Faculty of Cheistry, Brno University of Technology, Purkyňova 118,
More informationTHE EFFECT OF SOLID PARTICLE SIZE UPON TIME AND SEDIMENTATION RATE
Bulletin of the Transilvania University of Braşov Series II: Forestry Wood Industry Agricultural Food Engineering Vol. 5 (54) No. 1-1 THE EFFECT OF SOLID PARTICLE SIZE UPON TIME AND SEDIMENTATION RATE
More informationSeparate Effects Tests to Determine the Pressure Drop over Packed Beds in the PBMR HPTU Test Facility
Separate Effects Tests to Deterine the Pressure Drop over Packed Beds in the PBMR HPTU Test Facility CG du Toit, PG Rousseau North-West University Private Bag X6001, Potchefstroo 50, South Africa phone:
More informationExperimental Investigation on Segregation of Binary Mixture of Solids by Continuous Liquid Fluidization
214 5th International Conference on Chemical Engineering and Applications IPCBEE vol.74 (214) (214) IACSIT Press, Singapore DOI: 1.7763/IPCBEE. 214. V74. 5 Experimental Investigation on Segregation of
More informationDETERMINATION OF ADSORTION LAYERS ON SILICON SORPTION ARTIFACTS USING MASS COMPARISON
DETERMINATION OF ADSORTION LAYERS ON SILICON SORPTION ARTIFACTS USING MASS COMPARISON Unurbileg Daraa 2 1, Jin Wan Chung 1 and Sungjun Lee 1, Seung Na Park 1* 1 Korea Research Institute of Standards and
More informationAccuracy of the Scaling Law for Experimental Natural Frequencies of Rectangular Thin Plates
The 9th Conference of Mechanical Engineering Network of Thailand 9- October 005, Phuket, Thailand Accuracy of the caling Law for Experiental Natural Frequencies of Rectangular Thin Plates Anawat Na songkhla
More informationProperties of Sodium Carbonates Beds at Incipient Fluidization and Terminal Velocities of Solids
Properties of Sodiu Carbonates Beds at Incipient Fluidization and Terinal Velocities of Solids M. HARTMAN*, O. TRNKA, V. VESELÝ, and K. SVOBODA Institute of Cheical Process Fundaentals, Acadey of Sciences
More informationCrystallization of Supercooled Liquid Elements Induced by Superclusters Containing Magic Atom Numbers Abstract: Keywords: 1.
Crystallization of Supercooled Liquid Eleents Induced by Superclusters Containing Magic Ato Nubers Robert F. Tournier, CRETA /CNRS, Université Joseph Fourier, B.P. 166, 804 Grenoble cedex 09, France. E-ail:
More informationPOST-PERFORATION LENGTH AND VELOCITY OF KE PROJECTILES WITH SINGLE OBLIQUE TARGETS
15th International Syposiu on Ballistics Jerusale, Israel, 21-24 May, 1995 OS-ERFORAION LENGH AND VELOCIY OF KE ROJECILES WIH SINGLE OBLIQUE ARGES R. Jeanquartier, W. Oderatt Defence echnology and rocureent
More informationDaniel López Gaxiola 1 Student View Jason M. Keith
Suppleental Material for Transport Process and Separation Process Principles Chapter Principles of Moentu Transfer and Overall Balances In fuel cells, the fuel is usually in gas or liquid phase. Thus,
More informationEXPERIMENTAL INVESTIGATION OF FORCED CONVECTIVE HEAT TRANSFER IN RECTANGULAR MICRO-CHANNELS
EXPERIMENTAL INVESTIGATION OF FORCED CONVECTIVE HEAT TRANSFER IN RECTANGULAR MICRO-CHANNELS R. Kalaivanan and R. Rathnasay Departent of Mechanical Engineering, Annaalai University, Annaalainagar, Tailnadu,
More informationEfficient Numerical Solution of Diffusion Convection Problem of Chemical Engineering
Cheical and Process Engineering Research ISSN 4-7467 (Paper) ISSN 5-9 (Online) Vol, 5 Efficient Nuerical Solution of Diffusion Convection Proble of Cheical Engineering Bharti Gupta VK Kukreja * Departent
More informationEFFECT OF SURFACE ASPERITY TRUNCATION ON THERMAL CONTACT CONDUCTANCE
EFFECT OF SURFACE ASPERITY TRUNCATION ON THERMAL CONTACT CONDUCTANCE Fernando H. Milanez *, M. M. Yovanovich, J. R. Culha Microelectronics Heat Transfer Laboratory Departent of Mechanical Engineering University
More informationSpine Fin Efficiency A Three Sided Pyramidal Fin of Equilateral Triangular Cross-Sectional Area
Proceedings of the 006 WSEAS/IASME International Conference on Heat and Mass Transfer, Miai, Florida, USA, January 18-0, 006 (pp13-18) Spine Fin Efficiency A Three Sided Pyraidal Fin of Equilateral Triangular
More informationUNCERTAINTIES IN THE APPLICATION OF ATMOSPHERIC AND ALTITUDE CORRECTIONS AS RECOMMENDED IN IEC STANDARDS
Paper Published on the16th International Syposiu on High Voltage Engineering, Cape Town, South Africa, 2009 UNCERTAINTIES IN THE APPLICATION OF ATMOSPHERIC AND ALTITUDE CORRECTIONS AS RECOMMENDED IN IEC
More information8.1 Force Laws Hooke s Law
8.1 Force Laws There are forces that don't change appreciably fro one instant to another, which we refer to as constant in tie, and forces that don't change appreciably fro one point to another, which
More informationFollow this and additional works at: Part of the Materials Science and Engineering Commons
Engineering Conferences International ECI Digital Archives 5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry Refereed Proceedings Suer 6-24-204 Effect
More informationA DESIGN GUIDE OF DOUBLE-LAYER CELLULAR CLADDINGS FOR BLAST ALLEVIATION
International Journal of Aerospace and Lightweight Structures Vol. 3, No. 1 (2013) 109 133 c Research Publishing Services DOI: 10.3850/S201042862013000550 A DESIGN GUIDE OF DOUBLE-LAYER CELLULAR CLADDINGS
More informationNumerical simulations of isotropic and die compaction of powder by the discrete element method
Nuerical siulations of isotropic and die copaction of powder by the discrete eleent ethod J-F. Jerier, B. Harthong, B. Chareyre, D. Ibault, F-V. Donzé & P. Doréus Laboratoire Sols, Solides, Structures,
More informationDESIGN OF THE DIE PROFILE FOR THE INCREMENTAL RADIAL FORGING PROCESS *
IJST, Transactions of Mechanical Engineering, Vol. 39, No. M1, pp 89-100 Printed in The Islaic Republic of Iran, 2015 Shira University DESIGN OF THE DIE PROFILE FOR THE INCREMENTAL RADIAL FORGING PROCESS
More informationSolidification of Porous Material under Natural Convection by Three Phases Modeling
Solidification of Porous Material under Natural Convection by Three Phases Modeling Hassan Basirat Tabrizi, Meber, IAENG and F. Sadeghpour Abstract The perforance of natural convective flow over a rectangular
More informationDensity and structure of undercooled liquid titanium
Article Condensed Matter Physics March 2012 Vol.57 No.7: 719 723 doi: 10.1007/s11434-011-4945-6 Density and structure of undercooled liquid titaniu WANG HaiPeng, YANG ShangJing & WEI BingBo * Departent
More informationMixing Process of Binary Polymer Particles in Different Type of Mixers
Vol. 3, No. 6 Mixing Process of Binary Polymer Particles in Different Type of Mixers S.M.Tasirin, S.K.Kamarudin & A.M.A. Hweage Department of Chemical and Process Engineering, Universiti Kebangsaan Malaysia
More informationEasy Evaluation Method of Self-Compactability of Self-Compacting Concrete
Easy Evaluation Method of Self-Copactability of Self-Copacting Concrete Masanori Maruoka 1 Hiroi Fujiwara 2 Erika Ogura 3 Nobu Watanabe 4 T 11 ABSTRACT The use of self-copacting concrete (SCC) in construction
More informationSD Numerical Simulation Technique for Hydrodynamic Flow Gas- Solids Mixing Mantilla Núñez, Irla* 1 S. De Vicente C. 2
SD Nuerical Siulation Technique for Hydrodynaic Flow Gas- Solids Mixing Mantilla Núñez, Irla* S. De Vicente C. National University of Engineering, Lia, Perú, Polytechnic University of Madrid. *Lia 5, irlan@uni.edu.pe.
More informationDISTRIBUTION OF THE HYDRAULIC PARAMETERS AT RIVER BENDS
DISTRIBUTION OF THE HYDRAULIC PARAMETERS AT RIVER BENDS Isa Issa Oran *, Riyad Hassan Al-Anbari ** and Walaa Khalil Ali *** * Assist. Professor, Foundation of Technical Education ** Assist. Professor,
More informationThe Thermal Conductivity Theory of Non-uniform Granular Flow and the Mechanism Analysis
Coun. Theor. Phys. Beijing, China) 40 00) pp. 49 498 c International Acadeic Publishers Vol. 40, No. 4, October 5, 00 The Theral Conductivity Theory of Non-unifor Granular Flow and the Mechanis Analysis
More informationExperiment 2: Hooke s Law
COMSATS Institute of Inforation Technology, Islaabad Capus PHYS-108 Experient 2: Hooke s Law Hooke s Law is a physical principle that states that a spring stretched (extended) or copressed by soe distance
More informationComparison Studies on Dynamic Packaging Properties of Corrugated Paperboard Pads
Engineering, 2010, 2, 378-386 doi:10.4236/eng.2010.25049 Published Online May 2010 (http://www.scirp.org/journal/eng) Coparison Studies on Dynaic Packaging Properties of Corrugated Paperboard Pads Abstract
More informationLONGITUDINAL EFFECTS AND FOCUSING IN SPACE-CHARGE DOMINATED BEAMS. John Richardson Harris
ONGITUDINA EFFECTS AND FOCUSING IN SPACE-CHARGE DOMINATED BEAMS by John Richardson Harris Thesis subitted to the Faculty of the Graduate School of the University of Maryland, College Park in partial fulfillent
More informationThe Effect of Non-Homogenous Perforation Pattern on Sound Absorption Bandwidth of Micro-Perforate Panel
7th International Conference on Physics and Its Applications 4 (ICOPIA 4) The Effect of Non-Hoogenous Perforation Pattern on Sound Absorption Bandwidth of Micro-Perforate Panel Iwan Prasetiyo Engineering
More informationANALYTICAL INVESTIGATION AND PARAMETRIC STUDY OF LATERAL IMPACT BEHAVIOR OF PRESSURIZED PIPELINES AND INFLUENCE OF INTERNAL PRESSURE
DRAFT Proceedings of the ASME 014 International Mechanical Engineering Congress & Exposition IMECE014 Noveber 14-0, 014, Montreal, Quebec, Canada IMECE014-36371 ANALYTICAL INVESTIGATION AND PARAMETRIC
More informationSIMULATION OF THE HEATING STEP WITHIN THE THERMOFORMING PROCESS USING THE FINITE DIFFERENCE METHOD
SIMULATION OF THE HEATING STEP WITHIN THE THERMOFORMING PROCESS USING THE FINITE DIFFERENCE METHOD A. Fertschej 1 *, G.R. Langecker 1 University of Leoben artur.fertschej@u-leoben.at; Franz-Josef Strasse
More informationIDENTIFICATION OF DEFLUIDIZATION REGION IN A GAS-SOLID FLUIDIZED BED USING A METHOD BASED ON PRESSURE FLUCTUATION MEASUREMENTS
Brazilian Journal of Chemical Engineering ISSN 14-663 Printed in Brazil www.abeq.org.br/bjche Vol. 6, No. 3, pp. 537-543, July - September, 9 IDENTIFICATION OF DEFLUIDIZATION REGION IN A GAS-SOLID FLUIDIZED
More informationUniaxial compressive stress strain model for clay brick masonry
Uniaxial copressive stress strain odel for clay brick asonry Heant B. Kaushik, Durgesh C. Rai* and Sudhir K. Jain Departent of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur 208 016,
More informationJOURNAL OF INTERNATIONAL ACADEMIC RESEARCH FOR MULTIDISCIPLINARY Impact Factor 1.393, ISSN: , Volume 2, Issue 4, May 2014
PREDICTION OF BED PRESSURE DROP AND TOP PACKED BED HEIGHT FORMATION IN THREE PHASE SEMI-FLUIDIZED BED WITH REGULAR HOMOGENOUS BINARY MIXTURES D.K. SAMAL* Y.K. MOHANTY** G.K. ROY*** *Dept. of Chemical Engineering,
More informationPseudo Dynamic Model Reference Nonlinear Control of a Continuous Bioreactor with Input Multiplicities
seudo Dynaic Model Reference Nonlinear Control of a Continuous Bioreactor with Input Multiplicities G.rabhaker Reddy*,V. Raesh Kuar and B.Spandana Abstract In the present work, the odel reference nonlinear
More informationHeavy Metal Adsorption to a Chelating Resin in a Binary Solid Fluidized Bed
Heavy Metal Adsorption to a Chelating Resin in a Binary Solid Fluidized Bed By Jianzhong Yang and Albert Renken* The addition of inert particles of lighter density and saller diaeter increases considerably
More informationFeature Extraction Techniques
Feature Extraction Techniques Unsupervised Learning II Feature Extraction Unsupervised ethods can also be used to find features which can be useful for categorization. There are unsupervised ethods that
More informationSupporting Material Supplement
Magatti et al. Modeling of fibrin gels - Supporting Material Suppleent Modeling of Fibrin Gels Based on Confocal Microscopy and Light-Scattering ata avide Magatti, Matteo Molteni, Barbara Cardinali, Mattia
More informationModelling of the Through-air Bonding Process
Modelling of the Through-air Bonding Process M. Hossain 1, M. Acar, Ph.D. 2, W. Malalasekera 2 1 School of Engineering, The Robert Gordon University, Aberdeen, UNITED KINDOM 2 Mechanical and Manufacturing
More informationDesign Criteria for a Packed-Fluidized Bed: Homogeneous Fluidization of Geldart s Class B Solids
Engineering Conferences International ECI Digital Archives The 14th International Conference on Fluidization From Fundamentals to Products Refereed Proceedings 2013 Design Criteria for a Packed-Fluidized
More informationApparent molal volumes of alcohols in aqueous solutions at different temperatures
Indian Journal of Cheistry Vol. 3A, February 1995. pp. 106-110 Apparent olal volues of alcohols in aqueous solutions at different teperatures M V Kaulgud". S S Dhondge' & A G Mohari!" Departent of Chcsity,
More informationExperimental Design For Model Discrimination And Precise Parameter Estimation In WDS Analysis
City University of New York (CUNY) CUNY Acadeic Works International Conference on Hydroinforatics 8-1-2014 Experiental Design For Model Discriination And Precise Paraeter Estiation In WDS Analysis Giovanna
More informationm potential kinetic forms of energy.
Spring, Chapter : A. near the surface of the earth. The forces of gravity and an ideal spring are conservative forces. With only the forces of an ideal spring and gravity acting on a ass, energy F F will
More informationDimensions and Units
Civil Engineering Hydraulics Mechanics of Fluids and Modeling Diensions and Units You already know how iportant using the correct diensions can be in the analysis of a proble in fluid echanics If you don
More informationMagnetohydrodynamic (MHD) Plane Poiseuille Flow With Variable Viscosity and Unequal Wall Temperatures
Iranian Journal of Cheical Engineering Vol. 11, No. 1 (Winter), 014, IAChE Resea rch note Magnetohydrodynaic (MHD) Plane Poiseuille Flow With Variable Viscosity and Unequal Wall Teperatures A. Kuar Jhankal
More information) = slugs/ft 3. ) = lb ft/s. ) = ft/s
1. Make use of Tables 1. in the text book (See the last page in this assignent) to express the following quantities in SI units: (a) 10. in./in, (b) 4.81 slugs, (c).0 lb, (d) 7.1 ft/s, (e) 0.04 lb s/ft.
More informationCelal S. Konor Release 1.1 (identical to 1.0) 3/21/08. 1-Hybrid isentropic-sigma vertical coordinate and governing equations in the free atmosphere
Celal S. Konor Release. (identical to.0) 3/2/08 -Hybrid isentropic-siga vertical coordinate governing equations in the free atosphere This section describes the equations in the free atosphere of the odel.
More informationMoment of Inertia. Terminology. Definitions Moment of inertia of a body with mass, m, about the x axis: Transfer Theorem - 1. ( )dm. = y 2 + z 2.
Terinology Moent of Inertia ME 202 Moent of inertia (MOI) = second ass oent Instead of ultiplying ass by distance to the first power (which gives the first ass oent), we ultiply it by distance to the second
More informationIn this chapter we will study sound waves and concentrate on the following topics:
Chapter 17 Waves II In this chapter we will study sound waves and concentrate on the following topics: Speed of sound waves Relation between displaceent and pressure aplitude Interference of sound waves
More informationIs the seismic moment frequency relation universal?
Geophys. J. Int. (2) 142, 193 198 Is the seisic oent frequency relation universal? C. Godano1 and F. Pingue2 1 Dipartiento di Scienze Abientali, Seconda Università di Napoli, via V ivaldi 43, 811 Caserta,
More informationAn analytical relation between relaxation time spectrum and molecular weight distribution
An analytical relation between relaxation tie spectru and olecular weight distribution Wolfgang Thi, Christian Friedrich, a) Michael Marth, and Josef Honerkap b) Freiburger Materialforschungszentru, Stefan-Meier-Straße
More informationProjectile Motion with Air Resistance (Numerical Modeling, Euler s Method)
Projectile Motion with Air Resistance (Nuerical Modeling, Euler s Method) Theory Euler s ethod is a siple way to approxiate the solution of ordinary differential equations (ode s) nuerically. Specifically,
More informationGrid performance models using Design of Experiments (DoE) methods
Grid perforance odels using Design of Experients (DoE) ethods IEPC 25-139 Presented at the 29 th International Electric Propulsion Conference, Princeton University, October 31 Noveber, 25 Michael Tartz
More informationRandom Vibration Fatigue Analysis with LS-DYNA
1 th International LS-DYNA Users Conference Siulation() Rando Vibration Fatigue Analysis with LS-DYNA Arnaud Ringeval 1, Yun Huang 1 CIMES, France 36 rue Marc Lefrancq, Les Ateliers Nuériques, 593 Valenciennes,
More informationXiaoming Mao. Department of Physics and Astronomy, University of Pennsylvania. Collaborators: Tom Lubensky, Ning Xu, Anton Souslov, Andrea Liu
Xiaoing Mao Departent of Physics and Astronoy, University of Pennsylvania Collaborators: To Lubensky, Ning Xu, Anton Souslov, Andrea Liu Feb., 009 What is isostaticity? Isostatic systes are at the onset
More informationDepartment of Building Science, Tsinghua University, Beijing , China
Supporting Inforation A SPME based C a -history ethod for easuring SVOC diffusion coefficients in clothing aterial Jianping Cao 1,, Ningrui Liu 1,, Yinping Zhang 1,,* 1 Departent of Building Science, Tsinghua
More informationL 2. AP Physics Free Response Practice Oscillations ANSWERS 1975B7. (a) F T2. (b) F NET(Y) = 0
AP Physics Free Response Practice Oscillations ANSWERS 1975B7. (a) 60 F 1 F g (b) F NE(Y) = 0 F1 F1 = g / cos(60) = g (c) When the string is cut it swings fro top to botto, siilar to the diagra for 1974B1
More informationBehaviour of Headed Anchor Blind Bolts Embedded in Concrete Filled Circular Hollow Section Column
Behaviour of Headed Anchor Blind Bolts Ebedded in Concrete Filled Circular Hollow Section Colun Yusak Oktavianus 1, Helen M. Goldsworthy 2, Ead F. Gad 3 1. Corresponding Author. PhD Candidate, Departent
More informationA Fiber Optic Phase Modulator with an Optical Frequency Shift of up to 20 GHz
A Fiber Optic Phase Modulator with an Optical Frequency Shift of up to 0 GHz A.M.Maedov (1), A. L. Levin (), and V. T. Potapov (3) (1) Institute of Radio Engineering and Electronics, Russian Acadey of
More informationOn the characterization of non-linear diffusion equations. An application in soil mechanics
On the characterization of non-linear diffusion equations. An application in soil echanics GARCÍA-ROS, G., ALHAMA, I., CÁNOVAS, M *. Civil Engineering Departent Universidad Politécnica de Cartagena Paseo
More informationEstimating flow properties of porous media with a model for dynamic diffusion
Estiating low properties o porous edia with a odel or dynaic diusion Chuntang Xu*, Jerry M. Harris, and Youli Quan, Geophysics Departent, Stanord University Suary We present an approach or estiating eective
More informationAll Excuses must be taken to 233 Loomis before 4:15, Monday, April 30.
Miscellaneous Notes he end is near don t get behind. All Excuses ust be taken to 233 Loois before 4:15, Monday, April 30. he PHYS 213 final exa ties are * 8-10 AM, Monday, May 7 * 8-10 AM, uesday, May
More informationBiochemical Engineering
Biocheical Engineering Jaes M. ee Departent of Cheical Engineering Washington State University Pullan, WA 99164-714 jlee@wsu.edu Chapter 9 Agitation and Aeration...1 9.1. ntroduction... 1 9.. Basic Mass-Transfer
More informationEffect of chemical reaction and viscous dissipation on MHD nanofluid flow over a horizontal cylinder : analytical solution
Effect of cheical reaction and viscous dissipation on MHD nanofluid flo over a horizontal cylinder : analytical solution hukla, N, Rana, P, Beg, OA and ingha, B http://dx.doi.org/1.163/1.497365 Title Authors
More informationDetermination of accurate theoretical values for thermodynamic properties in bulk metallic glasses
Adv. Manuf. (2013) 1:293 304 DOI 10.1007/s40436-013-0040-3 Deterination of accurate theoretical values for therodynaic properties in bulk etallic glasses Pei-You Li Gang Wang Ding Ding Jun Shen Received:
More informationAdsorption of 2,4-Xylidine on Granulated Activated Carbon in a Packed Bed Absorber. f f
Proceedings o the 6 th Nordic Syposiu on Petrophysics, 5-6 May, Trondhei, Norway Nordic Energy Research Prograe Norwegian U. o Science and Technology Adsorption o,4-xylidine on Granulated Activated Carbon
More informationNumerical Modeling of Self-Compacting Mortar Flow Using Discrete Element Method
Nuerical Modeling of Self-Copacting Flow Using Discrete Eleent Method - Technical Paper - Miansong HUANG *1, Xuehui AN *, Takayuki OBARA *3 and Masahiro OUCHI *4 ABSTRACT A nuerical odeling of Self-Copacting
More informationKinetic Theory of Gases: Elementary Ideas
Kinetic Theory of Gases: Eleentary Ideas 17th February 2010 1 Kinetic Theory: A Discussion Based on a Siplified iew of the Motion of Gases 1.1 Pressure: Consul Engel and Reid Ch. 33.1) for a discussion
More informationDetermining a Function for the Damping Coefficient of a laminated Stack
DOI: 10.435/UB.OVGU-017-093 TECHNISCHE MECHANIK, 37, -5, (017), 161 170 subitted: June 9, 017 Deterining a Function for the Daping Coefficient of a lainated Stack C. Zahalka, K. Ellerann The design of
More informationMonitoring and system identification of suspension bridges: An alternative approach
Monitoring and syste identification of suspension bridges: An alternative approach Erdal Şafak Boğaziçi University, Kandilli Observatory and Earthquake Reseach Institute, Istanbul, Turkey Abstract This
More informationOptimization of ripple filter for pencil beam scanning
Nuclear Science and Techniques 24 (2013) 060404 Optiization of ripple filter for pencil bea scanning YANG Zhaoxia ZHANG Manzhou LI Deing * Shanghai Institute of Applied Physics, Chinese Acadey of Sciences,
More informationNumerical simulation of VOC Emissions from Dry Materials
Yang, X., Chen, Q., Zhang, J.S, Magee, R., Zeng, J. and Shaw,C.Y. 2001. Nuerical siulation of VOC eissions fro dry aterials, Building and Environent, 36(10), 1099-1107. Nuerical siulation of VOC Eissions
More information1 Statistics of volumes, swept by spheroidal particles, in a turbulent flow.
1 Statistics of volues, swept by spheroidal particles, in a turbulent flow. B. Grits*, M. Pinsky, and A. Khain Institute of Earth Science, The Hebrew University of Jerusale 1. INTRODUCTION Collisions between
More information7. Renormalization and universality in pionless EFT
Renoralization and universality in pionless EFT (last revised: October 6, 04) 7 7. Renoralization and universality in pionless EFT Recall the scales of nuclear forces fro Section 5: Pionless EFT is applicable
More informationCFD SIMULATION OF A MEMBRANE DISTILLATION MODULE CHANNEL
CFD SIMULATION OF A MEMBRANE DISTILLATION MODULE CHANNEL A. Cipollina *, A. Di Miceli *, J. Koschikowski, G. Micale *, L. Rizzuti * * Dipartiento di Ingegneria Chiica dei Processi e dei Materiali, Università
More informationPossible experimentally observable effects of vertex corrections in superconductors
PHYSICAL REVIEW B VOLUME 58, NUMBER 21 1 DECEMBER 1998-I Possible experientally observable effects of vertex corrections in superconductors P. Miller and J. K. Freericks Departent of Physics, Georgetown
More informationKinetic Theory of Gases: Elementary Ideas
Kinetic Theory of Gases: Eleentary Ideas 9th February 011 1 Kinetic Theory: A Discussion Based on a Siplified iew of the Motion of Gases 1.1 Pressure: Consul Engel and Reid Ch. 33.1) for a discussion of
More informationAn Approximate Model for the Theoretical Prediction of the Velocity Increase in the Intermediate Ballistics Period
An Approxiate Model for the Theoretical Prediction of the Velocity... 77 Central European Journal of Energetic Materials, 205, 2(), 77-88 ISSN 2353-843 An Approxiate Model for the Theoretical Prediction
More informationWork, Energy and Momentum
Work, Energy and Moentu Work: When a body oves a distance d along straight line, while acted on by a constant force of agnitude F in the sae direction as the otion, the work done by the force is tered
More informationCOULD A VARIABLE MASS OSCILLATOR EXHIBIT THE LATERAL INSTABILITY?
Kragujevac J. Sci. 3 (8) 3-44. UDC 53.35 3 COULD A VARIABLE MASS OSCILLATOR EXHIBIT THE LATERAL INSTABILITY? Nebojša Danilović, Milan Kovačević and Vukota Babović Institute of Physics, Faculty of Science,
More informationMRI evidence of nanoparticles migration in drying porous media
Engineering Conferences International ECI Digital Archives 5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry Refereed Proceedings Suer 6-25-214 MRI
More informationSolvent Extraction Research and Development, Japan, Vol. 22, No 1, (2015)
Solvent Extraction Research and Developent, Japan, Vol. 22, No 1, 95 11 (215) Notes Separation of Nitrogen Heterocyclic Copounds fro Model Oils by an Eulsion Liquid Mebrane Hiroaki HABAKI, Yoshiyuki SHIMADA
More informationA Mathematical Model of the Removal of Milk Protein Deposit
efereed Proceedings Heat Exchanger Fouling and Cleaning: Fundaentals and pplications Engineering Conferences International Year 2003 Matheatical Model of the eoval of Milk Protein Deposit Hong Xin The
More informationVI Krupyanko 1 * and PV Krupyanko 2. The analysis of dependence of the length projection of L i. ) and inhibited (v i
Open Access Archives of Pharacy and Pharaceutical Sciences Review Article Application of the Pyphagor s Theore for Correction of i and a constants of enzye inhibition and activation VI rupyanko * and PV
More informationStudy on an automotive refill opening cap compound process based on punching and incremental forming
Indian Journal of Engineering & Materials Sciences Vol. 25, June 2018, pp. 250-256 Study on an autootive refill opening cap copound process based on punching and increental foring Zhiguo An a *, Zhengfang
More informationTitle. Author(s)Izumida, Yuki; Okuda, Koji. CitationPhysical review E, 80(2): Issue Date Doc URL. Rights. Type.
Title Onsager coefficients of a finite-tie Carnot cycle Author(s)Izuida, Yuki; Okuda, Koji CitationPhysical review E, 80(2): 021121 Issue Date 2009-08 Doc URL http://hdl.handle.net/2115/39348 Rights 2009
More informationAnswers to assigned problems from Chapter 1
Answers to assigned probles fro Chapter 1 1.7. a. A colun of ercury 1 in cross-sectional area and 0.001 in height has a volue of 0.001 and a ass of 0.001 1 595.1 kg. Then 1 Hg 0.001 1 595.1 kg 9.806 65
More informationAn Overview of Surface Roughness Effects on Nucleate Boiling Heat Transfer
24 The Open Transport Phenoena Journal, 200, 2, 24-34 Open Access An Overview of Surface Roughness Effects on Nucleate Boiling Heat Transfer J. M. Saiz Jabardo * Escola Politécnica Superior, Universidade
More informationDeveloped Correlations for Prediction of The Enthalpies of Saturated Vapor Liquid Coexisting Phases
Nahrain University, College of Engineering Journal (NUCEJ) Vol.13 No.2, 2010 pp.116-128 Developed Correlations for Prediction of he Enthalpies of Saturated Vapor Liquid Coexisting Phases Mahoud Oar bdullah
More informationEVALUATION OF DESIGN PROVISIONS FOR IN-PLANE SHEAR IN MASONRY WALLS COURTNEY LYNN DAVIS
EVALUATION OF DESIGN PROVISIONS FOR IN-PLANE SHEAR IN MASONRY WALLS By COURTNEY LYNN DAVIS A thesis subitted in partial fulfillent of the requireents for the degree of MASTER OF SCIENCE IN CIVIL ENGINEERING
More informationREDUCTION OF FINITE ELEMENT MODELS BY PARAMETER IDENTIFICATION
ISSN 139 14X INFORMATION TECHNOLOGY AND CONTROL, 008, Vol.37, No.3 REDUCTION OF FINITE ELEMENT MODELS BY PARAMETER IDENTIFICATION Riantas Barauskas, Vidantas Riavičius Departent of Syste Analysis, Kaunas
More informationStatistical associating fluid theory-dimer of the solid phase of the pearl-necklace model
Indian Journal of Pure & Applied Physics Vol., epteber 00, pp 688-69 tatistical associating fluid theory-dier of the solid phase of the pearl-necklace odel Vivek Kuar ingh & K N Khanna Departent of Physics,
More informationENTROPY GENERATION ANALYSIS OF THE REVISED CHENG-MINKOWYCZ PROBLEM FOR NATURAL CONVECTIVE BOUNDARY LAYER FLOW OF NANOFLUID IN A POROUS MEDIUM
Rashidi, M. M., et al.: Entropy Generation Analysis of the Revised Cheng-Minkowycz THERMAL SCIENCE, Year 15, Vol. 19, Suppl. 1, pp. S169-S178 S169 ENTROPY GENERATION ANALYSIS OF THE REVISED CHENG-MINOWYCZ
More information