Micro-Scale CFD Modeling of Packed-Beds
|
|
- Roger Armstrong
- 5 years ago
- Views:
Transcription
1 Micro-Scale CFD Modeling of Packed-Beds Daniel P. Combest and Dr. P.A. Ramachandran and Dr. M.P. Dudukovic Chemical Reaction Engineering Laboratory (CREL) Department of Energy, Environmental, and Chemical Engineering. Washington University, St. Louis, MO. Heat and Mass Transfer Session. 6 th OpenFOAM Workshop Penn State University. June 14 th
2 Motivation For Research The geometry influences phenomena within a packed bed across multiple length scales. Macro/Reactor-Scale Meso-Scale Micro-Scale Particle-Scale Pore-Scale Decreasing Length Scales In Packed-Bed Reactors 2
3 Objectives Objective Improve the understanding of micro-scale processes in packed bed reactors Topics Geometry and mesh generation Steady-state results Passive scalar transport Conjugate solver 3
4 Geometry and Mesh Generation Domain Generation 1000 cylinders 4
5 Geometry and Mesh Generation Domain Generation Removed a quarter section 20.5 cm bed radius 20.5 cm section height 3 cm particle diameter 3 cm particle length 1000 cylinders 5
6 Geometry and Mesh Generation Face and Volume Meshing Create face meshes on each particle surface Create volume mesh from the particle faces. 6
7 Geometry and Mesh Generation Face and Volume Meshing Issue with transition region meshes 7
8 Geometry and Mesh Generation Pure Tet Mesh 9,695,976 Cells 19,759,649 Faces Mesh Conversion Diverging turbulence model Issues with convergence Long simulation time 8
9 Geometry and Mesh Generation Pure Tet Mesh 9,695,976 Cells 19,759,649 Faces Mesh Conversion Hex-Poly Mesh 2,074,208 Cells 13,324,232 Faces 9
10 potentialfoam 2 U p 0 0 Steady-State Results Solution Strategy simplefoam (with S-A model) ( U U ) 1 st order discretization p eff 2 2nd order discretization U t Model k- RSM Models or Post-Processing Velocity-pressure field (E 1, E 2, k m, h) Transient passive scalar (Dispersion Coefficient) Steady state with boundary flux ( -R A ) Conjugate mass transfer (and variants) 10
11 Steady-State Results (1,-1,0) plane Velocity Field y + = 2.7 Max(y + ) = 6 Min (y + ) =
12 Steady-State Results (1,-1,0) plane Velocity Field Key Points Many boundary layers Stagnant zones behind particles issues with inlet/outlet? y + = 2.7 Max(y + ) = 6 Min (y + ) =
13 Steady-State Results Turbulent Viscosity nu t (1,-1,0) plane 13
14 Steady-State Results Turbulent Viscosity nu t (1,-1,0) plane Key Points Inlet nutilda overestimate must be compared to other models turbintensity = 0.05 mixing length 0.03 m 14
15 Steady-State Results Turbulent Viscosity nu t (1,-1,0) plane 15
16 Steady-State Results Turbulent Viscosity nu t (1,-1,0) plane Key Points D t will be near scale of D 16
17 Passive Scalar Modeling Model Equation C t Model and Code ( U C ) D C u' c' 17
18 Passive Scalar Modeling Model Equation C t Model and Code ( U C ) D C u' c' Coded Equation solve ( fvm::ddt(c) + fvm::div(phi, C) + fvm::susp(-fvc::div(phi), C) - fvm::laplacian(d, C) - fvm::laplacian(dturbulent, C) ); 18
19 Passive Scalar Modeling Model Equation C t Model and Code ( U C ) D C u' c' Coded Equation solve ( fvm::ddt(c) + fvm::div(phi, C) + fvm::susp(-fvc::div(phi), C) - fvm::laplacian(d, C) - fvm::laplacian(dturbulent, C) ); Key Points Monitor outlet concentration Use bounded schemes 19
20 F [unitless] Passive Scalar Modeling F-Curve F-Curve for Re p = F C 0.6 C max Time [sec] Uses patchmassflowaverage from simplefunctionobjects library 20
21 F [unitless] Passive Scalar Modeling F-Curve F-Curve for Re p = F C C max Key Points Agrees with proper behavior Within bounds Used in lower order CRE models Time [sec] Uses patchmassflowaverage from simplefunctionobjects library 21
22 Passive Scalar Modeling Time Dependent C 22
23 Passive Scalar Modeling Time Dependent C Boundary layer effects Recirculation regions 23
24 Passive Scalar Modeling Time Dependent C 24
25 Passive Scalar Modeling Time Dependent C High Dt 25
26 Conjugate Mass Solver Model Equations ( U D s C ) D C s R Boundary condition at the interface D C D s C s s C Model and Observations u' c' 26
27 Conjugate Mass Solver Model Equations ( U D s C ) D C s R Boundary condition at the interface D C D s C s s C Model and Observations u' c' Keys to Steady State Solver Use conjugateheatfoam Resolve turbulent affects with gradient diffusion hypothesis Drop time-derrivative Store previous iterations individually (C and Cs) Relax fields individually (C and Cs) 27
28 Current State Conjugate Mass Solver Sticking Points Simple solutions on square domains work fine and are fast Issues with matching solid faces with fluid patches (user error?) Need a tool/process to automatically couple patches between multiple regions 28
29 Closure simplefoam #TODO: Lower turbulent intensity on inlet #TODO: Different turbulence models Tracer experiments #TIP: Bounded schemes and fvm::susp(-fvc::div(phi), C) #TIP: Monitor outlet C for negative concentrations Conjugate Problems #IMPROVEMENT?: Map patches between regions automatically #TODO: Fix and post pyfoam-bash scripts to decompose parallel cases 29
30 Acknowledgements Funding Chemical Reaction Engineering Laboratory (CREL) MRE Fund ( OpenFOAM Developers Community Advisors Dr. Ramachandran Dr. Dudukovic 30
31 Thanks for your attention! Questions? Dan Combest 31
32 Steady-State Velocity Field 32
33 simplefoam Settings Boundary Conditions Probe points Patch averages Residuals 33
34 Passive Scalar Settings Boundary Conditions Probe points Patch averages Residuals 34
35 Porosity [-] Geometry and Mesh Generation 1.1 Step 0 Step 5 Step 21 Step 50 Step 100 Step 200 Step Increasing Packing Cycles Distance From Wall in Particle Diameters [-] 35
36 Geometry and Mesh Generation 1000 cylinders L b /D p = = 0.63 L p /D p = 1, D b /D p = cm bed diameter 500 trilobes L b /D p = 19.4 =
37 Steady-State Results Velocity Field (0,0,1) plane Key Points Highly variable Evidence of interacting BLs Transition regime? Far from structured packing 37
Validation 3. Laminar Flow Around a Circular Cylinder
Validation 3. Laminar Flow Around a Circular Cylinder 3.1 Introduction Steady and unsteady laminar flow behind a circular cylinder, representing flow around bluff bodies, has been subjected to numerous
More informationOpenFOAM selected solver
OpenFOAM selected solver Roberto Pieri - SCS Italy 16-18 June 2014 Introduction to Navier-Stokes equations and RANS Turbulence modelling Numeric discretization Navier-Stokes equations Convective term {}}{
More informationComputation for the Backward Facing Step Test Case with an Open Source Code
Computation for the Backward Facing Step Test Case with an Open Source Code G.B. Deng Equipe de Modélisation Numérique Laboratoire de Mécanique des Fluides Ecole Centrale de Nantes 1 Rue de la Noë, 44321
More informationTutorial for the heated pipe with constant fluid properties in STAR-CCM+
Tutorial for the heated pipe with constant fluid properties in STAR-CCM+ For performing this tutorial, it is necessary to have already studied the tutorial on the upward bend. In fact, after getting abilities
More informationInitial and Boundary Conditions
Initial and Boundary Conditions Initial- and boundary conditions are needed For a steady problems correct initial conditions is important to reduce computational time and reach convergence Boundary conditions
More information1D-3D COUPLED SIMULATION OF THE FUEL INJECTION INSIDE A HIGH PERFORMANCE ENGINE FOR MOTORSPORT APPLICATION: SPRAY TARGETING AND INJECTION TIMING
1D-3D COUPLED SIMULATION OF THE FUEL INJECTION INSIDE A HIGH PERFORMANCE ENGINE FOR MOTORSPORT APPLICATION: SPRAY TARGETING AND INJECTION TIMING M. Fiocco, D. Borghesi- Mahindra Racing S.P.A. Outline Introduction
More informationThermal Dispersion and Convection Heat Transfer during Laminar Transient Flow in Porous Media
Thermal Dispersion and Convection Heat Transfer during Laminar Transient Flow in Porous Media M.G. Pathak and S.M. Ghiaasiaan GW Woodruff School of Mechanical Engineering Georgia Institute of Technology,
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 informationThis section develops numerically and analytically the geometric optimisation of
7 CHAPTER 7: MATHEMATICAL OPTIMISATION OF LAMINAR-FORCED CONVECTION HEAT TRANSFER THROUGH A VASCULARISED SOLID WITH COOLING CHANNELS 5 7.1. INTRODUCTION This section develops numerically and analytically
More informationThis chapter focuses on the study of the numerical approximation of threedimensional
6 CHAPTER 6: NUMERICAL OPTIMISATION OF CONJUGATE HEAT TRANSFER IN COOLING CHANNELS WITH DIFFERENT CROSS-SECTIONAL SHAPES 3, 4 6.1. INTRODUCTION This chapter focuses on the study of the numerical approximation
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 8 STATISTICAL ASSESSMENT OF NUMERICAL DIFFUSION
84 hapter 8 STATISTIAL ASSESSMENT OF NUMERIAL DIFFUSION The assessment of the performance of high-order numerical methods regarding the numerical diffusion introduced in the solution of the scalar transport
More informationBasic Concepts: Drag. Education Community
Basic Concepts: Drag 011 Autodesk Objectives Page Introduce the drag force that acts on a body moving through a fluid Discuss the velocity and pressure distributions acting on the body Introduce the drag
More informationOn the validity of the twofluid model for simulations of bubbly flow in nuclear reactors
On the validity of the twofluid model for simulations of bubbly flow in nuclear reactors Henrik Ström 1, Srdjan Sasic 1, Klas Jareteg 2, Christophe Demazière 2 1 Division of Fluid Dynamics, Department
More informationCFD-Modeling of Turbulent Flows in a 3x3 Rod Bundle and Comparison to Experiments
CFD-Modeling of Turbulent Flows in a 3x3 Rod Bundle and Comparison to Experiments C. Lifante 1, B. Krull 1, Th. Frank 1, R. Franz 2, U. Hampel 2 1 PBU, ANSYS Germany, Otterfing 2 Institute of Safety Research,
More informationHeat Transfer Simulation by CFD from Fins of an Air Cooled Motorcycle Engine under Varying Climatic Conditions
, July 6-8, 2011, London, U.K. Heat Transfer Simulation by CFD from Fins of an Air Cooled Motorcycle Engine under Varying Climatic Conditions Pulkit Agarwal, Mayur Shrikhande and P. Srinivasan Abstract
More informationStudies on flow through and around a porous permeable sphere: II. Heat Transfer
Studies on flow through and around a porous permeable sphere: II. Heat Transfer A. K. Jain and S. Basu 1 Department of Chemical Engineering Indian Institute of Technology Delhi New Delhi 110016, India
More informationTutorial for the supercritical pressure pipe with STAR-CCM+
Tutorial for the supercritical pressure pipe with STAR-CCM+ For performing this tutorial, it is necessary to have already studied the tutorial on the upward bend. In fact, after getting abilities with
More informationCFD analysis of the transient flow in a low-oil concentration hydrocyclone
CFD analysis of the transient flow in a low-oil concentration hydrocyclone Paladino, E. E. (1), Nunes, G. C. () and Schwenk, L. (1) (1) ESSS Engineering Simulation and Scientific Software CELTA - Rod SC-41,
More informationTaylor Dispersion Created by Robert P. Hesketh, Chemical Engineering, Rowan University Fall 2005
Taylor Dispersion Created by Robert P. Hesketh, Chemical Engineering, Rowan University Fall 005 In this problem you will simulate a tubular reactor with fluid flowing in laminar flow. The governing equations
More informationStratified scavenging in two-stroke engines using OpenFOAM
Stratified scavenging in two-stroke engines using OpenFOAM Håkan Nilsson, Chalmers / Applied Mechanics / Fluid Dynamics 1 Acknowledgements I would like to thank Associate Professor Håkan Nilsson at the
More informationCalculating equation coefficients
Fluid flow Calculating equation coefficients Construction Conservation Equation Surface Conservation Equation Fluid Conservation Equation needs flow estimation needs radiation and convection estimation
More informationIntroduction to Heat and Mass Transfer. Week 7
Introduction to Heat and Mass Transfer Week 7 Example Solution Technique Using either finite difference method or finite volume method, we end up with a set of simultaneous algebraic equations in terms
More informationIntroduction to Heat and Mass Transfer. Week 9
Introduction to Heat and Mass Transfer Week 9 補充! Multidimensional Effects Transient problems with heat transfer in two or three dimensions can be considered using the solutions obtained for one dimensional
More informationTurbulent Boundary Layers & Turbulence Models. Lecture 09
Turbulent Boundary Layers & Turbulence Models Lecture 09 The turbulent boundary layer In turbulent flow, the boundary layer is defined as the thin region on the surface of a body in which viscous effects
More informationTutorial 11. Use of User-Defined Scalars and User-Defined Memories for Modeling Ohmic Heating
Tutorial 11. Use of User-Defined Scalars and User-Defined Memories for Modeling Ohmic Heating Introduction The purpose of this tutorial is to illustrate the use of user-defined scalars (UDS) and user defined
More informationDevelopment of a consistent and conservative Eulerian - Eulerian algorithm for multiphase flows
Development of a consistent and conservative Eulerian - Eulerian algorithm for multiphase flows Ana Cubero Alberto Sanchez-Insa Norberto Fueyo Numerical Fluid Dynamics Group University of Zaragoza Spain
More informationDraft Tube calculations using OpenFOAM-1.5dev and validation with FLINDT data
6th OpenFOAM Workshop, June 13-16 2011, PennState University, USA Draft Tube calculations using OpenFOAM-1.5dev and validation with FLINDT data C. Devals, Y. Zhang and F.Guibault École Polytechnique de
More informationviscousheatingsolver Martin Becker
viscousheatingsolver Adding temperature transport and viscous heating to simplefoam Solver and Test Case Martin Becker martin_becker@dhcae-tools.de 11/09/2012 Abstract The modifications of the simplefoam
More informationCOMSOL Multiphysics Simulation of 3D Single- hase Transport in a Random Packed Bed of Spheres
COMSOL Multiphysics Simulation of 3D Single- hase Transport in a Random Packed Bed of Spheres A G. Dixon *1 1 Department of Chemical Engineering, Worcester Polytechnic Institute Worcester, MA, USA *Corresponding
More informationOpenFOAM SIMULATION OF THE FLOW IN THE HÖLLEFORSEN DRAFT TUBE MODEL
Turbine-99 III Proceedings of the third IAHR/ERCOFTAC workshop on draft tube flow 8-9 December 2005, Porjus, Sweden Paper No. 8 OpenFOAM SIMULATION OF THE FLOW IN THE HÖLLEFORSEN DRAFT TUBE MODEL Nilsson
More informationCFD Analysis of Vented Lean Hydrogen Deflagrations in an ISO Container
35 th UKELG Meeting, Spadeadam, 10-12 Oct. 2017 CFD Analysis of Vented Lean Hydrogen Deflagrations in an ISO Container Vendra C. Madhav Rao & Jennifer X. Wen Warwick FIRE, School of Engineering University
More informationChemical Reaction Engineering
Lecture 32! Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place.!! 1! Lecture 32 Thursday
More informationSOE3213/4: CFD Lecture 3
CFD { SOE323/4: CFD Lecture 3 @u x @t @u y @t @u z @t r:u = 0 () + r:(uu x ) = + r:(uu y ) = + r:(uu z ) = @x @y @z + r 2 u x (2) + r 2 u y (3) + r 2 u z (4) Transport equation form, with source @x Two
More informationNumerical simulation of fluid flow in a monolithic exchanger related to high temperature and high pressure operating conditions
Advanced Computational Methods in Heat Transfer X 25 Numerical simulation of fluid flow in a monolithic exchanger related to high temperature and high pressure operating conditions F. Selimovic & B. Sundén
More informationNumerics Improvements and Validation Results: FOAM-Extend
Numerics Improvements and Validation Results: FOAM-Extend Update on Work-in-Progress Hrvoje Jasak Wikki Ltd. United Kingdom Faculty of Mechanical Engineering and Naval Architecture, Uni Zagreb, Croatia
More informationProcess Chemistry Toolbox - Mixing
Process Chemistry Toolbox - Mixing Industrial diffusion flames are turbulent Laminar Turbulent 3 T s of combustion Time Temperature Turbulence Visualization of Laminar and Turbulent flow http://www.youtube.com/watch?v=kqqtob30jws
More informationMODA. Modelling data documenting one simulation. NewSOL energy storage tank
MODA Modelling data documenting one simulation NewSOL energy storage tank Metadata for these elements are to be elaborated over time Purpose of this document: Definition of a data organisation that is
More informationCFD ANALYSIS OF CD NOZZLE AND EFFECT OF NOZZLE PRESSURE RATIO ON PRESSURE AND VELOCITY FOR SUDDENLY EXPANDED FLOWS. Kuala Lumpur, Malaysia
International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN(P): 2249-6890; ISSN(E): 2249-8001 Vol. 8, Issue 3, Jun 2018, 1147-1158 TJPRC Pvt. Ltd. CFD ANALYSIS
More informationStudy on residence time distribution of CSTR using CFD
Indian Journal of Chemical Technology Vol. 3, March 16, pp. 114-1 Study on residence time distribution of CSTR using CFD Akhilesh Khapre*, Divya Rajavathsavai & Basudeb Munshi Department of Chemical Engineering,
More informationAN UNCERTAINTY ESTIMATION EXAMPLE FOR BACKWARD FACING STEP CFD SIMULATION. Abstract
nd Workshop on CFD Uncertainty Analysis - Lisbon, 19th and 0th October 006 AN UNCERTAINTY ESTIMATION EXAMPLE FOR BACKWARD FACING STEP CFD SIMULATION Alfredo Iranzo 1, Jesús Valle, Ignacio Trejo 3, Jerónimo
More informationstudies Maryse Page Hydro-Québec, Research Institute Håkan Nilsson Chalmers University of Technology Omar Bounous Chalmers University of Technology
OpenFOAM Turbomachinery Working Group: ERCOFTAC conical diffuser case-studies studies Maryse Page Hydro-Québec, Research Institute Olivier Petit Chalmers University of Technology Håkan Nilsson Chalmers
More informationBASIC DESIGN EQUATIONS FOR MULTIPHASE REACTORS
BASIC DESIGN EQUATIONS FOR MULTIPHASE REACTORS Starting Reference 1. P. A. Ramachandran and R. V. Chaudhari, Three-Phase Catalytic Reactors, Gordon and Breach Publishers, New York, (1983). 2. Nigam, K.D.P.
More informationMagnetic induction and electric potential solvers for incompressible MHD flows
Magnetic induction and electric potential solvers for incompressible MHD flows Alessandro Tassone DIAEE - Nuclear Section, Sapienza Università di Roma, Rome, Italy 05/12/2016 Alessandro Tassone CMHD Solvers
More informationMATLAB Solution of Flow and Heat Transfer through a Porous Cooling Channel and the Conjugate Heat Transfer in the Surrounding Wall
MATLAB Solution of Flow and Heat Transfer through a Porous Cooling Channel and the Conjugate Heat Transfer in the Surrounding Wall James Cherry, Mehmet Sözen Grand Valley State University, cherryj1@gmail.com,
More informationHydrogen Vehicle Leak Modelling in Indoor Ventilated Environments.
Excerpt from the Proceedings of the COMSOL Conference 2009 Milan Hydrogen Vehicle Leak Modelling in Indoor Ventilated Environments. A. Hallgarth *1, A. Zayer 1, A. Gatward 2 and J. Davies 2 1 Hazard Research
More informationElmer. Introduction into Elmer multiphysics. Thomas Zwinger. CSC Tieteen tietotekniikan keskus Oy CSC IT Center for Science Ltd.
Elmer Introduction into Elmer multiphysics FEM package Thomas Zwinger CSC Tieteen tietotekniikan keskus Oy CSC IT Center for Science Ltd. Contents Elmer Background History users, community contacts and
More informationCanada. CFD-Experiments Integration in the Evaluation of Six Turbulence Models for Supersonic Ejectors Modeling
CFD-Experiments Integration in the Evaluation of Six Turbulence Models for Supersonic Ejectors Modeling CANMET Energy Technology Centre - Varennes Y. Bartosiewicz, Z. Aidoun, P. Desevaux, and Y. Mercadier
More informationNumerical Simulations of a Stratified Oceanic Bottom Boundary Layer. John R. Taylor - MIT Advisor: Sutanu Sarkar - UCSD
Numerical Simulations of a Stratified Oceanic Bottom Boundary Layer John R. Taylor - MIT Advisor: Sutanu Sarkar - UCSD Motivation Objective I: Assess and improve parameterizations of the bottom boundary
More informationShape Optimization of Valve Channel with Incompressible to Compressible Simulation for Pressure Loss Calculation
5 th OpenFOAM Workshop, Chalmers, Gothenburg, Sweden, June 21-24, 2010 Shape Optimization of Valve Channel with Incompressible to Compressible Simulation for Pressure Loss Calculation Seiji KUBO (IHI Corporation)
More informationExplicit algebraic Reynolds stress models for internal flows
5. Double Circular Arc (DCA) cascade blade flow, problem statement The second test case deals with a DCA compressor cascade, which is considered a severe challenge for the CFD codes, due to the presence
More informationDEVELOPMENT OF A NUMERICAL APPROACH FOR SIMULATION OF SAND BLOWING AND CORE FORMATION
TMS (The Minerals, Metals & Materials Society), DEVELOPMENT OF A NUMERICAL APPROACH FOR SIMULATION OF SAND BLOWING AND CORE FORMATION G.F. Yao, C. W. Hirt, and
More informationCoupled calculations in OpenFOAM -
Coupled calculations in OpenFOAM - Multiphysics handling, structures and solvers, Gothenburg Region OpenFOAM User Group Meeting Klas Jareteg Chalmers University of Technology November 14, 2012 Outline
More informationComputation of Unsteady Flows With Moving Grids
Computation of Unsteady Flows With Moving Grids Milovan Perić CoMeT Continuum Mechanics Technologies GmbH milovan@continuummechanicstechnologies.de Unsteady Flows With Moving Boundaries, I Unsteady flows
More informationNatural Convection from a Long Horizontal Cylinder
Natural Convection from a Long Horizontal Cylinder Hussein Awad Kurdi Saad Engineering Technical College of Al Najaf, Al-Furat Al-Awsat Technical University, Iraq ABSTRACT: Natural convection from a Long
More informationNumerical investigation of swirl flow inside a supersonic nozzle
Advances in Fluid Mechanics IX 131 Numerical investigation of swirl flow inside a supersonic nozzle E. Eslamian, H. Shirvani & A. Shirvani Faculty of Science and Technology, Anglia Ruskin University, UK
More informationSupporting Information
Supporting Information Sandwich mixer-reactor: Influence of the diffusion coefficient and flow rate ratios Mélanie Abonnenc, Jacques Josserand and Hubert H. Girault* 1 ESI 1: Finite-element formulation
More informationA 2-D Test Problem for CFD Modeling Heat Transfer in Spent Fuel Transfer Cask Neutron Shields. G Zigh and J Solis U.S. Nuclear Regulatory Commission
CFD4NRS2010 A 2-D Test Problem for CFD Modeling Heat Transfer in Spent Fuel Transfer Cask Neutron Shields G Zigh and J Solis U.S. Nuclear Regulatory Commission Abstract JA Fort Pacific Northwest National
More informationOn the transient modelling of impinging jets heat transfer. A practical approach
Turbulence, Heat and Mass Transfer 7 2012 Begell House, Inc. On the transient modelling of impinging jets heat transfer. A practical approach M. Bovo 1,2 and L. Davidson 1 1 Dept. of Applied Mechanics,
More informationME 431A/538A/538B Homework 22 October 2018 Advanced Fluid Mechanics
ME 431A/538A/538B Homework 22 October 2018 Advanced Fluid Mechanics For Friday, October 26 th Start reading the handout entitled Notes on finite-volume methods. Review Chapter 7 on Dimensional Analysis
More informationA Computational Investigation of a Turbulent Flow Over a Backward Facing Step with OpenFOAM
206 9th International Conference on Developments in esystems Engineering A Computational Investigation of a Turbulent Flow Over a Backward Facing Step with OpenFOAM Hayder Al-Jelawy, Stefan Kaczmarczyk
More informationPOTENTIAL TURBULENCE MODEL PREDICTIONS OF FLOW PAST A TRIANGULAR CYLINDER USING AN UNSTRUCTURED STAGGERED MESH METHOD
POTENTIAL TURBULENCE MODEL PREDICTIONS OF FLOW PAST A TRIANGULAR CYLINDER USING AN UNSTRUCTURED STAGGERED MESH METHOD Xg Zhang Blair Perot Department of Mechanical and Industrial Engeerg, University of
More information"C:\Program Files\ANSYS Inc\v190\CFX\bin\perllib\cfx5solve.pl" -batch -ccl runinput.ccl -fullname "Fluid Flow CFX_002"
This run of the CFX Release 19.0 Solver started at 19:06:17 on 05 Jun 2018 by user ltval on DESKTOP-JCG0747 (intel_xeon64.sse2_winnt) using the command: "C:\Program Files\ANSYS Inc\v190\CFX\bin\perllib\cfx5solve.pl"
More informationKeywords - Gas Turbine, Exhaust Diffuser, Annular Diffuser, CFD, Numerical Simulations.
Numerical Investigations of PGT10 Gas Turbine Exhaust Diffuser Using Hexahedral Dominant Grid Vaddin Chetan, D V Satish, Dr. Prakash S Kulkarni Department of Mechanical Engineering, VVCE, Mysore, Department
More informationCFD ANALYSIS OF TURBULENCE EFFECT ON REACTION IN STIRRED TANK REACTORS
CFD ANALYSIS OF TURBULENCE EFFECT ON REACTION IN STIRRED TANK REACTORS Udaya Bhaskar Reddy R*, Gopalakrishnan S, Ramasamy E Department of Chemical Engineering, Coimbatore Institute of Technology, Coimbatore-
More informationCFD ANALYSIS OF THE CORK-PHENOLIC HEAT SHIELD OF A REENTRY CUBESAT IN ARC-JET CONDITIONS INCLUDING ABLATION AND PYROLYSIS
CFD ANALYSIS OF THE CORK-PHENOLIC HEAT SHIELD OF A REENTRY CUBESAT IN ARC-JET CONDITIONS INCLUDING ABLATION AND PYROLYSIS 15 th International Planetary Probe Workshop 14/06/2018 Ata Onur Başkaya 1 A. Turchi
More informationNumerical Simulations And Laboratory Measurements In Hydraulic Jumps
City University of New York (CUNY) CUNY Academic Works International Conference on Hydroinformatics 8-1-2014 Numerical Simulations And Laboratory Measurements In Hydraulic Jumps Luis G. Castillo José M.
More informationInfluence of the Heat Transfer on the Pressure Field in Radial Diffusers Flows
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2010 Influence of the Heat Transfer on the Pressure Field in Radial Diffusers Flows Jose
More informationProject #1 Internal flow with thermal convection
Project #1 Internal flow with thermal convection MAE 494/598, Fall 2017, Project 1 (20 points) Hard copy of report is due at the start of class on the due date. The rules on collaboration will be released
More informationCFD-Simulations of a 4π-continuous-mode dilution refrigerator for the CB-ELSA experiment
CFD-Simulations of a 4π-continuous-mode dilution refrigerator for the CB-ELSA experiment M. Bornstein, H. Dutz, S. Goertz, S. Reeve, University of Bonn, Germany E-mail: runkel@physik.uni-bonn.de The polarized
More informationEffect Analysis of Volume Fraction of Nanofluid Al2O3-Water on Natural Convection Heat Transfer Coefficient in Small Modular Reactor
World Journal of Nuclear Science and Technology, 2016, 6, 79-88 Published Online January 2016 in SciRes. http://www.scirp.org/journal/wjnst http://dx.doi.org/10.4236/wjnst.2016.61008 Effect Analysis of
More informationDescription of AdjointShapeOptimizationFoam and how to implement new cost functions
Description of AdjointShapeOptimizationFoam and how to implement new cost functions A project work in the course CFD with OpenSource software, taught by Håkan Nilsson. Chalmers University of Technology,
More informationPrepared by: Simanto. Date: Sunday, August 17, 2014
C Date: Sunday, August 17, 2014 Report Contents Design 1 2 Scenario 1... 2 Materials... 2 boundary conditions... 3 Initial Conditions... 4 mesh... 4 Physics... 5 Solver Settings... 5 Convergence... 5 Results...
More informationModel Studies on Slag-Metal Entrainment in Gas Stirred Ladles
Model Studies on Slag-Metal Entrainment in Gas Stirred Ladles Anand Senguttuvan Supervisor Gordon A Irons 1 Approach to Simulate Slag Metal Entrainment using Computational Fluid Dynamics Introduction &
More informationCalculations on a heated cylinder case
Calculations on a heated cylinder case J. C. Uribe and D. Laurence 1 Introduction In order to evaluate the wall functions in version 1.3 of Code Saturne, a heated cylinder case has been chosen. The case
More informationMAE 598 Project #1 Jeremiah Dwight
MAE 598 Project #1 Jeremiah Dwight OVERVIEW A simple hot water tank, illustrated in Figures 1 through 3 below, consists of a main cylindrical tank and two small side pipes for the inlet and outlet. All
More informationUnsteady Rotor-Stator Simulation of the U9 Kaplan Turbine Model
Unsteady Rotor-Stator Simulation of the U9 Kaplan Turbine Model Olivier Petit, Håkan Nilsson Chalmers University 6 th OpenFOAM workshop Penn State University, USA 13-16 June 2011 Develop OpenFOAM as the
More informationAir Flow Characteristics inside an Industrial Wood Pallet Drying Kiln
Excerpt from the Proceedings of the COMSOL Conference 2010 Paris Air Flow Characteristics inside an Industrial Wood Pallet Drying Kiln Adrian-Gabriel Ghiaus *,1, Marian-Andrei Istrate 1 and Andrei-Mugur
More informationADVANCED DES SIMULATIONS OF OXY-GAS BURNER LOCATED INTO MODEL OF REAL MELTING CHAMBER
ADVANCED DES SIMULATIONS OF OXY-GAS BURNER LOCATED INTO MODEL OF REAL MELTING CHAMBER Ing. Vojtech Betak Ph.D. Aerospace Research and Test Establishment Department of Engines Prague, Czech Republic Abstract
More informationHeat Transfer Modeling using ANSYS FLUENT
Lecture 2 - Conduction Heat Transfer 14.5 Release Heat Transfer Modeling using ANSYS FLUENT 2013 ANSYS, Inc. March 28, 2013 1 Release 14.5 Agenda Introduction Energy equation in solids Equation solved
More informationA First Course on Kinetics and Reaction Engineering Unit D and 3-D Tubular Reactor Models
Unit 34. 2-D and 3-D Tubular Reactor Models Overview Unit 34 describes two- and three-dimensional models for tubular reactors. One limitation of the ideal PFR model is that the temperature and composition
More informationIntroduction to Heat and Mass Transfer. Week 12
Introduction to Heat and Mass Transfer Week 12 Next Topic Convective Heat Transfer» Heat and Mass Transfer Analogy» Evaporative Cooling» Types of Flows Heat and Mass Transfer Analogy Equations governing
More informationA First Course on Kinetics and Reaction Engineering Unit 33. Axial Dispersion Model
Unit 33. Axial Dispersion Model Overview In the plug flow reactor model, concentration only varies in the axial direction, and the sole causes of that variation are convection and reaction. Unit 33 describes
More informationCDF CALCULATION OF RADIAL FAN STAGE WITH VARIABLE LENGTH OF SEMI BLADES SVOČ FST 2012
CDF CALCULATION OF RADIAL FAN STAGE WITH VARIABLE LENGTH OF SEMI BLADES SVOČ FST 2012 Ing. Roman Gášpár, Západočeská univerzita v Plzni, Univerzitní 8, 306 14 Plzeň Česká republika NOMENCLATURE A area
More informationApplication of COMSOL Multiphysics in Transport Phenomena Educational Processes
Application of COMSOL Multiphysics in Transport Phenomena Educational Processes M. Vasilev, P. Sharma and P. L. Mills * Department of Chemical and Natural Gas Engineering, Texas A&M University-Kingsville,
More informationTransient, Source Terms and Relaxation
F. Moukalled L. Mangani M. Darwish An Advanced Introduction with OpenFOAM and Matlab This textbook explores both the theoretical foundation of the Finite Volume Method (FVM) and its applications in Computational
More informationProject title: A Multiscale Simulation-Based Design Platform for Cost-Effective CO 2 Capture Processes using Nano-Structured Materials (NanoSim)
Grant Agreement No.: 604656 Project acronym: NanoSim Project title: A Multiscale Simulation-Based Design Platform for Cost-Effective CO 2 Capture Processes using Nano-Structured Materials (NanoSim) Funding
More informationNumerical Simulation of the Hagemann Entrainment Experiments
CCC Annual Report UIUC, August 14, 2013 Numerical Simulation of the Hagemann Entrainment Experiments Kenneth Swartz (BSME Student) Lance C. Hibbeler (Ph.D. Student) Department of Mechanical Science & Engineering
More informationCFD in COMSOL Multiphysics
CFD in COMSOL Multiphysics Mats Nigam Copyright 2016 COMSOL. Any of the images, text, and equations here may be copied and modified for your own internal use. All trademarks are the property of their respective
More informationADAPTATION OF THE REYNOLDS STRESS TURBULENCE MODEL FOR ATMOSPHERIC SIMULATIONS
ADAPTATION OF THE REYNOLDS STRESS TURBULENCE MODEL FOR ATMOSPHERIC SIMULATIONS Radi Sadek 1, Lionel Soulhac 1, Fabien Brocheton 2 and Emmanuel Buisson 2 1 Laboratoire de Mécanique des Fluides et d Acoustique,
More informationNumerical Simulation of Gas-Liquid-Reactors with Bubbly Flows using a Hybrid Multiphase-CFD Approach
Numerical Simulation of Gas-Liquid-Reactors with Bubbly Flows using a Hybrid Multiphase-CFD Approach TFM Hybrid Interface Resolving Two-Fluid Model (HIRES-TFM) by Coupling of the Volume-of-Fluid (VOF)
More informationLES modeling of heat and mass transfer in turbulent recirculated flows E. Baake 1, B. Nacke 1, A. Umbrashko 2, A. Jakovics 2
MAGNETOHYDRODYNAMICS Vol. 00 (1964), No. 00, pp. 1 5 LES modeling of heat and mass transfer in turbulent recirculated flows E. Baake 1, B. Nacke 1, A. Umbrashko 2, A. Jakovics 2 1 Institute for Electrothermal
More informationTutorial: Premixed Flow in a Conical Chamber using the Finite-Rate Chemistry Model
Tutorial: Premixed Flow in a Conical Chamber using the Finite-Rate Chemistry Model Introduction The purpose of this tutorial is to provide guidelines and recommendations for setting up and solving the
More informationCFD as a Tool for Thermal Comfort Assessment
CFD as a Tool for Thermal Comfort Assessment Dimitrios Koubogiannis dkoubog@teiath.gr G. Tsimperoudis, E. Karvelas Department of Energy Technology Engineering Technological Educational Institute of Athens
More informationNumerical investigation on the effect of inlet conditions on the oblique shock system in a high-speed wind tunnel
American Journal of Physics and Applications 2013; 1(3): 91-98 Published online November 30, 2013 (http:// www.sciencepublishinggroup.com/j/ajpa) doi: 10.11648/j.ajpa.20130103.16 Numerical investigation
More informationNUMERICAL METHOD FOR THREE DIMENSIONAL STEADY-STATE TWO-PHASE FLOW CALCULATIONS
' ( '- /A NUMERCAL METHOD FOR THREE DMENSONAL STEADY-STATE TWO-PHASE FLOW CALCULATONS P. Raymond,. Toumi (CEA) CE-Saclay DMT/SERMA 91191 Gif sur Yvette, FRANCE Tel: (331) 69 08 26 21 / Fax: 69 08 23 81
More informationTutorial School on Fluid Dynamics: Aspects of Turbulence Session I: Refresher Material Instructor: James Wallace
Tutorial School on Fluid Dynamics: Aspects of Turbulence Session I: Refresher Material Instructor: James Wallace Adapted from Publisher: John S. Wiley & Sons 2002 Center for Scientific Computation and
More informationAdvanced near-wall heat transfer modeling for in-cylinder flows
International Multidimensional Engine Modeling User s Group Meeting at the SAE Congress April 20, 2015 Detroit, MI S. Šarić, B. Basara AVL List GmbH Advanced near-wall heat transfer modeling for in-cylinder
More informationComparison of Heat and Mass Transport at the Micro-Scale
Comparison of Heat and Mass Transport at the Micro-Scale E. Holzbecher, S. Oehlmann Georg-August Univ. Göttingen *Goldschmidtstr. 3, 37077 Göttingen, GERMANY, eholzbe@gwdg.de Abstract: Phenomena of heat
More informationNumerical simulations of heat transfer in plane channel flow
Numerical simulations of heat transfer in plane channel flow Najla EL GHARBI 1, 3, a, Rafik ABSI 2, b and Ahmed BENZAOUI 3, c 1 Renewable Energy Development Center, BP 62 Bouzareah 163 Algiers, Algeria
More information