Development of a consistent and conservative Eulerian - Eulerian algorithm for multiphase flows
|
|
- Basil Eaton
- 5 years ago
- Views:
Transcription
1 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 6th OpenFOAM Workshop Penn State University, June 2011 File version: 14 Jun 11
2 Introduction Motivation Simulation of fluidized beds Chemical reactor with solid particles and a fluid, which together have fluid-like properties Issues: Bed hydrodynamics Heat transfer Mass transfer Combustion (homogeneous, heterogeneous)
3 Introduction Outline Development of a consistent and conservative Eulerian - Eulerian algorithm for multiphase flows Motivation Eulerian-Eulerian multi-phase equations Formulations: OpenFOAM alpha-intensive Conservative Consistent Momentum Interpolation Results Illustration and comparison Fluidized beds
4 Equations 2. Heating Eulerian multiphase equations Multiple fluids (continua) share the space Fraction of shared space is the volume fraction The exchange mass, momentum and other properties as they move 1. Drag and turbulence dispersion 3. Drying (H2O) 5. Heterogeneous combustion (CO, CO2) Water Coal Char Ash 4. Pyrolisis (CH4)
5 Equations The Eulerian multiphase equations Phase-mass conservation r p ρ p t + (r p ρ p v p ) (Γ r p r p )= x p and q are phases r is volume fraction x is a mass-exchange process (eg, drying) q ṁ x qp mx qp is mass transfer rate (kg/s) from phase p into phase q due to process x
6 Equations The Eulerian multiphase equations Conservation of a variable ϕ p r p ρ p φ p t + (r p ρ p v p φ p )+ (r p Γ φ p φ p )= = f φ qp(φ q φ p )+ ṁ x qpφ x + Sp φ q x q f is an interphase transport coefficient ϕ x is the value of ϕ in the donor phase in massexchanging process x Examples of ϕ: velocity, enthalpy/temp, water, volatile matter...
7 Approaches Related OpenFOAM efforts Alpha-intensive formulation in OpenFOAM (twophaseeulerfoam) (Alpha is the volume fraction in OpenFOAM) Euler-Euler gas-solid flow solver for OpenFOAM, under development by Alberto Passalacqua (Politecnico di Torino/Iowa State University)
8 Approaches The alpha-intensive formulation Oliveira and Issa, Weller, Rusche Motivation: Division of (non-conservative form) of the mom eqs by alpha, for preventing numerical difficulties when phase fractions tend to zero
9 Approaches Shortcomings 1. Non-conservative 2. Division by α requires setting an arbitrary min value 3. Momentum eq s not fully solved 4. Density presumed constant 5. Two phases (As implemented in twophaseeulerfoam)
10 Approaches Proposed approach CIPSAmultiPhaseEuler; C for consistent IPSA-based, with pressure [correction] from global mass conservation (IPSA: InterPhase Slip Algorithm, DB Spalding, Imperial College, circa 1982) PISO-like solution algorithm
11 Approaches Advantages CIPSAmultiPhaseEuler; C for consistent Consistent: steady state independent from relax coeffs and time-step size IPSA-based, with pressure [correction] from global mass conservation Equations solved in conservative form PISO-like solution algorithm Fully implicit, eqs fully satisfied at each time step
12 Approaches Other features Variable density (suitable for combustion) Multiple phases, inc Kinetic Theory of Granular Flows Heat and species conservation equations
13 Algorithmics Algorithm (IPSA-PISO) 1. Calculate interfacial terms, constitutive relations, etc. 2. Build all U equations (for consistency in drag term) 3. Solve U equations 4. Calculate fluxes 5. Build p equation from overall mass continuity ( r p =1) 6. Solve p equation 7. Correct velocities 8. Build r p equations 9. Solve r p equations 10.Normalize so that r p =1; r p min=1.0e Goto 1 unless converged
14 Algorithmics Phase segregation with CIPSA Prompted Oliveira and Issa to develop alpha-intensive form, because it did not converge in conservative form: [...] the standard method fails altogether because of the effect of phase segregation Solid volume fraction Solid volumetric flux Mixture velocity
15 Algorithmics Consistent Momentum Interpolation Extension to multiphase flows of CMI by Cubero and Fueyo Enhancement to Rhie and Chow s procedure Robust, prevents wiggles and checker-board profiles, even for small time steps Results independent of time step and relaxation coeff Compact numerical interpolation, even for higher order temporal schemes Details (single-phase flows): Cubero, A, Fueyo N A compact momentum interpolation procedure for unsteady flows and relaxation. Numerical Heat Transfer, B. 52: (23).
16 Algorithmics CMI: essence (1)
17 Algorithmics CMI: essence (2)
18 Algorithmics CMI: essence (3)
19 Algorithmics Sample results Riser+elbow Solid density: 240 kg/m3; fluid density: 1.2 kg/m3 Inlet conditions: Us = 1.0 m/s; alpha_solid=0.001; Uf = 3.1m/s deltat = 1.0e-3 s, 1.0e-4 s Domain and gas velocity Mesh detail
20 Algorithmics Solid volume fraction Solid density 24 kg/m3, fluid 1.2 kg/m3 Using IPSA and both classic MI and Consistent MI IPSA + Momentum Interpolation CIPSA: IPSA + Consistent MI
21 Algorithmics Solid volume fraction IPSA + Momentum Interpolation CIPSA: IPSA + Consistent MI
22 Algorithmics Alpha-intensive solution deltat=1.0e-4s, restart from previous OpenFOAM alpha-intensive
23 Algorithmics Solid volume fraction in the bed Temporal evolution Note time-step dependence of IPSA+MI solid mass / Kg IPSA+CMI deltat=1.0e-3 IPSA+CMI deltat=1.0e-4 IPSA+MI OF-MI deltat=1.0e-3 IPSA+MI OF-MI deltat=1.0e time / s IPSA + MI CIPSA: IPSA + Consistent MI
24 Results::circulating beds Simulation of a dilute bed 5-meter riser Initial conditions Only gas Developed flow Kinetic theory of granular Text flows (KTGF) for solid viscosity and pressure Outlet Air Solid Syamlal-O Brien model for constitutive relations and drag Inlet
25 Results::circulating beds Dilute fluidized bed: results Solid volume fraction Solid vertical velocity Solid viscosity Particle cluster......going down......ktgf calculated Text
26 Results::circulating beds Animation Solid volume fraction Solid vertical velocity Solid viscosity Text
27 Results::circulating Tarea 2/9: Modelos Multifásicos/Modelado beds de configs Dense bed simulation 11-meter riser Initial conditions Only gas Developed flow Kinetic theory of granular Text flows (KTGF) for solid viscosity and pressure Air Outlet Solid Syamlal-O Brien model for constitutive relations and drag Inlet
28 Results::circulating beds Dense bed, results (t=18s) Solid volume fraction Solid vertical velocity Text Solid viscosity
29 Results::circulating Tarea 2/9: Modelos Multifásicos/Modelado beds de configs Animation Solid vertical velocity Solid volume fraction Solid viscosity Text
30 Results::circulating beds Dense bed: average flow fields Core-annulus structure Solid volume fraction Solid vertical velocity Text
31 Results::circulating beds Dense bed: average fields Radial profiles at 5.6 m Core-annulus structure Solid volume fraction Text Solid vertical velocity
32 Results::circulating beds From the start With initial r_solid=1.0e-30 (low, algorithmically demanding) Solid vertical velocity Solid volume fraction Solid viscosity Text
33 Results::bubbling beds A bubbling bed Two solid phases: alpha, alpha2 Volume fractions Velocities
34 Results::bubbling beds Fluent-OpenFOAM comparison Fluent OpenFOAM 0.5s 1.0s 1.5s 2.0s 3.0s 5.0s 10s 15s 20s
35 Further work WIP/Further work Full integration of heat, mass transfer, chemical reaction (via Cantera) Validation Vol frac solid Mass frac CH4 Mass frac ash Gas temperature (Pneumatic transport regime)
36 6th OpenFOAM Workshop Penn State University, June 2011 Thank you Ana Cubero Alberto Sanchez-Insa Norberto Fueyo Numerical Fluid Dynamics Group University of Zaragoza Spain Funding acknowledgements: Fundacion Ciudad de la Energia (Government of Spain), project OXY-CFD Spanish Ministry for Science and Innovation, CONSOLIDER INGENIO 2010, project CSD
Minimum fluidization velocity, bubble behaviour and pressure drop in fluidized beds with a range of particle sizes
Computational Methods in Multiphase Flow V 227 Minimum fluidization velocity, bubble behaviour and pressure drop in fluidized beds with a range of particle sizes B. M. Halvorsen 1,2 & B. Arvoh 1 1 Institute
More informationPrediction of Minimum Fluidisation Velocity Using a CFD-PBM Coupled Model in an Industrial Gas Phase Polymerisation Reactor
Journal of Engineering Science, Vol. 10, 95 105, 2014 Prediction of Minimum Fluidisation Velocity Using a CFD-PBM Coupled Model in an Industrial Gas Phase Polymerisation Reactor Vahid Akbari and Mohd.
More informationNumerical modelling of the slurry flow in pipelines and prediction of flow regimes
Computational Methods in Multiphase Flow VIII 311 Numerical modelling of the slurry flow in pipelines and prediction of flow regimes M. Swamy, N. González Díez & A. Twerda Heat Transfer and Fluid Dynamics,
More informationInter-particle force and stress models for wet and dry particulate flow at the intermediate flow regime
Inter-particle force and stress models for wet and dry particulate flow at the intermediate flow regime Xi Yu 1, Raffaella Ocone 3, Sotos Generalis 2, Yassir Makkawi 1 1 Chemical Engineering & Applied
More informationFiltered Two-Fluid Model for Gas-Particle Suspensions. S. Sundaresan and Yesim Igci Princeton University
Filtered Two-Fluid Model for Gas-Particle Suspensions S. Sundaresan and Yesim Igci Princeton University Festschrift for Professor Dimitri Gidaspow's 75th Birthday II Wednesday, November 11, 2009: 3:15
More informationSimulation Of Gas-Solid Turbulent Fluidized Bed Hydrodynamic
Engineering Conferences International ECI Digital Archives The 14th International Conference on Fluidization From Fundamentals to Products Refereed Proceedings 2013 Simulation Of Gas-Solid Turbulent Fluidized
More informationModeling of dispersed phase by Lagrangian approach in Fluent
Lappeenranta University of Technology From the SelectedWorks of Kari Myöhänen 2008 Modeling of dispersed phase by Lagrangian approach in Fluent Kari Myöhänen Available at: https://works.bepress.com/kari_myohanen/5/
More informationMultiphase Flows. Mohammed Azhar Phil Stopford
Multiphase Flows Mohammed Azhar Phil Stopford 1 Outline VOF Model VOF Coupled Solver Free surface flow applications Eulerian Model DQMOM Boiling Model enhancements Multi-fluid flow applications Coupled
More informationSIMULATION OF RECTANGULAR FLUIDIZED BED WITH GELDART D PARTICLES
1th International Conference on CFD in Oil & Gas, Metallurgical and Process Industries SINTEF, Trondheim, Norway 17-19 June 214 CFD 214 SIMULATION OF RECTANGULAR FLUIDIZED BED WITH GELDART D PARTICLES
More informationDevelopment of twophaseeulerfoam
ISPRAS OPEN 2016 NUMERICAL STUDY OF SADDLE-SHAPED VOID FRACTION PROFILES EFFECT ON THERMAL HYDRAULIC PARAMETERS OF THE CHANNEL WITH TWO-PHASE FLOW USING OPENFOAM AND COMPARISON WITH EXPERIMENTS Varseev
More informationMULTIPHASE FLOW MODELLING
MULTIPHASE FLOW MODELLING 1 Introduction 2 Outline Multiphase Flow Modeling Discrete phase model Eulerian model Mixture model Volume-of-fluid model Reacting Flow Modeling Eddy dissipation model Non-premixed,
More informationBed Sherwood Number and Chemical Kinetic Coefficient in a Fuel Reactor of Chemical Loopling Combustion by Eulerian CFD Modeling
Engineering Conferences International ECI Digital Archives The 14th International Conference on Fluidization From Fundamentals to Products Refereed Proceedings 2013 Bed Sherwood Number and Chemical Kinetic
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 informationSD Numerical Simulation Technique for Hydrodynamic Flow Gas-Solids Mixing
SD Numerical Simulation Technique for Hydrodynamic Flow Gas-Solids Mixing Presented by: Irla Mantilla N. irlamn@uni.edu.pe National University of Engineering, Lima - Perú Abstract We formulate a new mathematical
More informationDispersed Multiphase Flow Modeling using Lagrange Particle Tracking Methods Dr. Markus Braun Ansys Germany GmbH
Dispersed Multiphase Flow Modeling using Lagrange Particle Tracking Methods Dr. Markus Braun Ansys Germany GmbH 2011 ANSYS, Inc., Markus Braun 1 Overview The Euler/Lagrange concept Breaking the barrier
More informationCoupling of ChemApp and OpenFOAM
Coupling of ChemApp and OpenFOAM Messig, Danny; Rehm, Markus; Meyer, Bernd 19th May 2009 Contents 1 Introduction 2 Software OpenFOAM ChemApp Cantera 3 Coupling of chemistry packages and OpenFOAM 4 Testcases
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 informationValidation 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 informationCFD simulation of gas solid bubbling fluidized bed: an extensive assessment of drag models
Computational Methods in Multiphase Flow IV 51 CFD simulation of gas solid bubbling fluidized bed: an extensive assessment of drag models N. Mahinpey 1, F. Vejahati 1 & N. Ellis 2 1 Environmental Systems
More informationA CFD study of gas-solid separation in a downer pyrolysis reactor: An eulerian-eulerian approach
Engineering Conferences International ECI Digital Archives BioEnergy IV: Innovations in Biomass Conversion for Heat, Power, Fuels and Chemicals Proceedings Spring 6-10-2013 A CFD study of gas-solid separation
More informationElutriation from Fluidized Beds: Comparison Between Experimental Measurements and 3D Simulation Results
Engineering Conferences International ECI Digital Archives 1th International Conference on Circulating Fluidized Beds and Fluidization Technology - CFB-1 Refereed Proceedings Spring 5-3-211 Elutriation
More informationINFLUENCE OF JOULE THOMPSON EFFECT ON THE TEMPERATURE DISTRIBUTION IN VERTICAL TWO PHASE FLOW
INFLUENCE OF JOULE THOMPSON EFFECT ON THE TEMPERATURE DISTRIBUTION IN VERTICAL TWO PHASE FLOW Daniel Merino Gabriel S. Bassani, Luiz Eduardo A. P. Duarte Deibi E. Garcia Angela O. Nieckele Two-phase Flow
More informationVerification of Sub-Grid Drag Modifications for Dense Gas-Particle Flows in Bubbling Fluidized Beds
Engineering Conferences International ECI Digital Archives The 4th International Conference on Fluidization From Fundamentals to Products Refereed Proceedings 23 Verification of Sub-Grid Drag Modifications
More informationMODELLING OF MULTIPHASE FLOWS
MODELLING OF MULTIPHASE FLOWS FROM MICRO-SCALE TO MACRO-SCALE Department of Applied Mechanics, University of Technology, Gothenburg, Sweden. Siamuf Seminar October 2006 OUTLINE 1 GROUP PHILOSOPHY 2 PROJECTS
More informationCFD Simulation of Sodium Boiling in Heated Pipe using RPI Model
Proceedings of the 2 nd World Congress on Momentum, Heat and Mass Transfer (MHMT 17) Barcelona, Spain April 6 8, 2017 Paper No. ICMFHT 114 ISSN: 2371-5316 DOI: 10.11159/icmfht17.114 CFD Simulation of Sodium
More informationMODELLING OF GAS-SOLID FLOWS IN FCC RISER REACTORS: FULLY DEVELOPED FLOW
Second International Conference on CFD in Minerals and Process Industries CSIRO, Melbourne, Australia - December, 999 MODELLING OF GAS-SOLID FLOWS IN FCC RISER REACTORS: FULLY DEVELOPED FLOW Vivek V. RANADE
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 informationCode Verification of Multiphase Flow with MFIX
Code Verification of Multiphase Flow with MFIX A N I R U D D H A C H O U D H A R Y ( A N I R U D D @ V T. E D U ), C H R I S T O P H E R J. ROY ( C J R O Y @ V T. E D U ), ( V I R G I N I A T E C H ) 23
More informationNumerical modelling of direct contact condensation of steam in BWR pressure suppression pool system
Numerical modelling of direct contact condensation of steam in BWR pressure suppression pool system Gitesh Patel, Vesa Tanskanen, Juhani Hyvärinen LUT School of Energy Systems/Nuclear Engineering, Lappeenranta
More informationHydrodynamic modeling of the entrainment of Geldart A group particles in gas-solid fluidized bed: The effect of column diameter
Korean J. Chem. Eng., 8(7), 1599-1607 (011) DOI: 10.1007/s11814-011-000-y INVITED REVIEW PAPER Hydrodynamic modeling of the entrainment of Geldart A group particles in gas-solid fluidized bed: The effect
More informationExperience with DNS of particulate flow using a variant of the immersed boundary method
Experience with DNS of particulate flow using a variant of the immersed boundary method Markus Uhlmann Numerical Simulation and Modeling Unit CIEMAT Madrid, Spain ECCOMAS CFD 2006 Motivation wide range
More informationModeling Industrial Crystallizers
Modeling Industrial Crystallizers Kumar Dhanasekharan, Ph.D. Fluent Inc., 10 Cavendish Court, Lebanon, NH 03766 Phone: (603) 643-2600 x323; Email: kd@fluent.com One of the main challenges in industrial
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 informationOverview of Turbulent Reacting Flows
Overview of Turbulent Reacting Flows Outline Various Applications Overview of available reacting flow models LES Latest additions Example Cases Summary Reacting Flows Applications in STAR-CCM+ Ever-Expanding
More informationNUMERICAL SIMULATION OF DROPLET DISPERSION AND EVAPORATION WITH A MOMENTS-BASED CFD MODEL
Proceedings of COBEM 29 Copyright c 29 by ABCM 2th International Congress of Mechanical Engineering November 15-2, 29, Gramado, RS, Brazil NUMERICAL SIMULATION OF DROPLET DISPERSION AND EVAPORATION WITH
More informationPowder Technology 197 (2010) Contents lists available at ScienceDirect. Powder Technology. journal homepage:
Powder Technology 197 (2010) 241 246 Contents lists available at ScienceDirect Powder Technology journal homepage: www.elsevier.com/locate/powtec EMMS-based Eulerian simulation on the hydrodynamics of
More informationDEVELOPMENT OF A MULTIPLE VELOCITY MULTIPLE SIZE GROUP MODEL FOR POLY-DISPERSED MULTIPHASE FLOWS
DEVELOPMENT OF A MULTIPLE VELOCITY MULTIPLE SIZE GROUP MODEL FOR POLY-DISPERSED MULTIPHASE FLOWS Jun-Mei Shi, Phil Zwart 1, Thomas Frank 2, Ulrich Rohde, and Horst-Michael Prasser 1. Introduction Poly-dispersed
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 informationPRESENTATION SLIDES: Hydrodynamic Scale-Up of Circulating Fluidized Beds
Refereed Proceedings The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering Engineering Conferences International Year 2007 PRESENTATION SLIDES: Hydrodynamic Scale-Up
More informationMicro-Scale CFD Modeling of Packed-Beds
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
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 informationAvailable online at ScienceDirect. Energy Procedia 69 (2015 )
Available online at www.sciencedirect.com ScienceDirect Energy Procedia 69 (2015 ) 573 582 International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2014 Numerical simulation
More informationMSc. Thesis Project. Simulation of a Rotary Kiln. MSc. Cand.: Miguel A. Romero Advisor: Dr. Domenico Lahaye. Challenge the future
MSc. Thesis Project Simulation of a Rotary Kiln MSc. Cand.: Miguel A. Romero Advisor: Dr. Domenico Lahaye 1 Problem Description What is a Rotary Kiln? A Rotary Kiln is a pyroprocessing device used to raise
More informationNumerical investigation of shock wave dense particles cloud interaction
25 th ICDERS August 2 7, 215 Leeds, UK Numerical investigation of shock wave dense particles cloud interaction Pavel S. Utkin Moscow Institute of Physics and Technology Dolgoprudny, Moscow region, Russia
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 informationCFD Simulation of Flashing and Boiling Flows Using FLUENT
CFD Simulation of Flashing and Boiling Flows Using FLUENT Hua Bai and Paul Gillis The Dow Chemical Company FLUENT UGM 2004 Liquid/Gas Phase Change found in many industrial chemical processes involves complex
More informationINTRODUCTION TO MULTIPHASE FLOW. Mekanika Fluida II -Haryo Tomo-
1 INTRODUCTION TO MULTIPHASE FLOW Mekanika Fluida II -Haryo Tomo- 2 Definitions Multiphase flow is simultaneous flow of Matters with different phases( i.e. gas, liquid or solid). Matters with different
More informationCFD Investigations of Effects of Cohesive Particles Proportion on Fluidization of Binary Particles
Proceedings of the 2 nd World Congress on Momentum, Heat and Mass Transfer (MHMT 17) Barcelona, Spain April 6 8, 2017 Paper No. ICMFHT 122 ISSN: 2371-5316 DOI: 10.11159/icmfht17.122 CFD Investigations
More informationCFD-Modeling of Boiling Processes
CFD-Modeling of Boiling Processes 1 C. Lifante 1, T. Frank 1, A. Burns 2, E. Krepper 3, R. Rzehak 3 conxita.lifante@ansys.com 1 ANSYS Germany, 2 ANSYS UK, 3 HZDR Outline Introduction Motivation Mathematical
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 informationModeling Complex Flows! Direct Numerical Simulations! Computational Fluid Dynamics!
http://www.nd.edu/~gtryggva/cfd-course/! Modeling Complex Flows! Grétar Tryggvason! Spring 2011! Direct Numerical Simulations! In direct numerical simulations the full unsteady Navier-Stokes equations
More informationCFD-DEM SIMULATION OF SYNGAS-TO-METHANE PROCESS IN A FLUIDIZED-BED REACTOR
Refereed Proceedings The 13th International Conference on Fluidization - New Paradigm in Fluidization Engineering Engineering Conferences International Year 010 CFD-DEM SIMULATION OF SYNGAS-TO-METHANE
More informationGrid independence behaviour of fluidized bed reactor simulations using the Two Fluid Model: Effect of particle size
Grid independence behaviour of fluidized bed reactor simulations using the Two Fluid Model: Effect of particle size Schalk Cloete 1, Stein Tore Johansen 2 & Shahriar Amini 2* 1 NTNU Department of Energy
More informationBest Practice Guidelines for Computational Turbulent Dispersed Multiphase Flows. René V.A. Oliemans
Best Practice Guidelines for Computational Turbulent Dispersed Multiphase Flows René V.A. Oliemans ERCOFTAC Seminar, Innventia, Stockholm, June 7-8, 2011 1 Vermelding onderdeel organisatie Department of
More information3. FORMS OF GOVERNING EQUATIONS IN CFD
3. FORMS OF GOVERNING EQUATIONS IN CFD 3.1. Governing and model equations in CFD Fluid flows are governed by the Navier-Stokes equations (N-S), which simpler, inviscid, form is the Euler equations. For
More informationNUMERICAL SIMULATION OF UPRISING GAS-SOLID PARTICLE FLOW IN CIRCULATING FLUIDISED BED
Oil Shale, 2009, Vol. 26, No. 2, pp. 125 138 ISSN 0208-189X doi: 10.3176/oil.2009.2.05 2009 Estonian Academy Publishers NUMERICAL SIMULATION OF UPRISING GAS-SOLID PARTICLE FLOW IN CIRCULATING FLUIDISED
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 informationNUMERICAL SIMULATION OF SUDDEN-EXPANSION PARTICLE-LADEN FLOWS USING THE EULERIAN LAGRANGIAN APPROACH. Borj Cedria, 2050 Hammam-Lif, Tunis.
NUMERICAL SIMULATION OF SUDDEN-EXPANSION PARTICLE-LADEN FLOWS USING THE EULERIAN LAGRANGIAN APPROACH Mohamed Ali. MERGHENI,2, Jean-Charles SAUTET 2, Hmaied BEN TICHA 3, Sassi BEN NASRALLAH 3 Centre de
More informationModeling of Wall-boiling Phenomena from Nucleate Subcooled Boiling up to CHF Conditions
Modeling of Wall-boiling Phenomena from Nucleate Subcooled Boiling up to CHF Conditions Thomas Frank (1), Amine Ben Hadj Ali (1), Conxita Lifante (1), Florian Kaiser (2), Stephan Gabriel (2), Henning Eickenbusch
More informationModelling of a chemical looping combustion system equipped with a two- stage fuel reactor
Engineering Conferences International ECI Digital Archives Fluidization XV Proceedings 5-25-2016 Modelling of a chemical looping combustion system equipped with a two- stage fuel reactor Roberto Solimene
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 informationBED EXPANSION BEHAVIOUR IN A BINARY SOLID-LIQUID FLUIDISED BED WITH DIFFERENT INITIAL SOLID LOADING- CFD SIMULATION AND VALIDATION
Eleventh International Conference on CFD in the Minerals and Process Industries CSIRO, Melbourne, Australia 7-9 December 015 BED EXPANSION BEHAVIOUR IN A BINARY SOID-IQUID FUIDISED BED WITH DIFFERENT INITIA
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 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 informationMomentum, energy and scalar transport in polydisperse gas-solid flows using particle-resolved direct numerical simulations
Graduate Theses and Dissertations Iowa State University Capstones, Theses and Dissertations 2013 Momentum, energy and scalar transport in polydisperse gas-solid flows using particle-resolved direct numerical
More informationAnalysis of hydrodynamic forces on non-spherical particles (Spherocylinder)
Coimbra, 6-8 March 2013. International workshop Fibre Suspension Flow Modelling French program ANR PLAYER Analysis of hydrodynamic forces on non-spherical particles (Spherocylinder) Rafik OUCHENE (LEMTA,
More informationCFD Simulation of Binary Fluidized Mixtures: Effects of Restitution Coefficient and Spatial Discretization Methods
Engineering Conferences International ECI Digital Archives The 14th International Conference on Fluidization From Fundamentals to Products Refereed Proceedings 2013 CFD Simulation of Binary Fluidized Mixtures:
More informationFVM for Fluid-Structure Interaction with Large Structural Displacements
FVM for Fluid-Structure Interaction with Large Structural Displacements Željko Tuković and Hrvoje Jasak Zeljko.Tukovic@fsb.hr, h.jasak@wikki.co.uk Faculty of Mechanical Engineering and Naval Architecture
More informationThe effect of momentum flux ratio and turbulence model on the numerical prediction of atomization characteristics of air assisted liquid jets
ILASS Americas, 26 th Annual Conference on Liquid Atomization and Spray Systems, Portland, OR, May 204 The effect of momentum flux ratio and turbulence model on the numerical prediction of atomization
More informationA two-fluid model of turbulent two-phase flow for simulating turbulent stratified flows
Ocean Engineering 30 (2003) 153 161 www.elsevier.com/locate/oceaneng A two-fluid model of turbulent two-phase flow for simulating turbulent stratified flows Y.M. Shen a,, C.-O. Ng b, A.T. Chwang b a State
More informationAIRLIFT BIOREACTORS. contents
AIRLIFT BIOREACTORS contents Introduction Fluid Dynamics Mass Transfer Airlift Reactor Selection and Design 1 INTRODUCTION airlift reactor (ALR) covers a wide range of gas liquid or gas liquid solid pneumatic
More informationEXPERIMENTAL ANALYSIS AND COMPUTATIONAL FLUID DYNAMICS SIMULATIONS FOR HEAT TRANSFER IN SOUND ASSISTED FLUIDIZED BED OF FINE POWDERS
THERMAL SCIENCE, Year 2017, Vol. 21, No. 5, pp. 1953-1963 1953 EXPERIMENTAL ANALYSIS AND COMPUTATIONAL FLUID DYNAMICS SIMULATIONS FOR HEAT TRANSFER IN SOUND ASSISTED FLUIDIZED BED OF FINE POWDERS by Introduction
More informationCFD SIMULATION OF SOLID-LIQUID STIRRED TANKS
CFD SIMULATION OF SOLID-LIQUID STIRRED TANKS Divyamaan Wadnerkar 1, Ranjeet P. Utikar 1, Moses O. Tade 1, Vishnu K. Pareek 1 Department of Chemical Engineering, Curtin University Perth, WA 6102 r.utikar@curtin.edu.au
More informationComputer Fluid Dynamics E181107
Computer Fluid Dynamics E181107 2181106 Combustion, multiphase flows Remark: foils with black background could be skipped, they are aimed to the more advanced courses Rudolf Žitný, Ústav procesní a zpracovatelské
More informationThis is an author-deposited version published in : Eprints ID : 9231
Open Archive TOULOUSE Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited
More informationComputational Fluid Dynamics Overview, Scope and Relevance
Computational Fluid Dynamics Overview, Scope and Relevance P. R. Naren School of Chemical & Biotechnology SASTRA University Thanjavur 613401 E-mail: prnaren@scbt.sastra.edu at Faculty Development Program
More informationExperimental and Numerical. on Distillation Trays. Authors: Henry França Meier Dirceu Noriler
Experimental and Numerical Analysis of Gas-Liquid Flow on Distillation Trays Authors: Henry França Meier Dirceu Noriler Summary State of Art Objectives this wor Experimental Setup Numerical analysis Model
More informationLarge Scale Fluid-Structure Interaction by coupling OpenFOAM with external codes
Large Scale Fluid-Structure Interaction by coupling OpenFOAM with external codes Thomas Gallinger * Alexander Kupzok Roland Wüchner Kai-Uwe Bletzinger Lehrstuhl für Statik Technische Universität München
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 informationCST Investigation on High Speed Liquid Jet using Computational Fluid Dynamics Technique
The 23 rd Conference of the Mechanical Engineering Network of Thailand November 4 7, 2009, Chiang Mai Investigation on High Speed Liquid Jet using Computational Fluid Dynamics Technique Wirapan Seehanam*,
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 informationNumerical Modelling of Twin-screw Pumps Based on Computational Fluid Dynamics
Numerical Modelling of Twin-screw Pumps Based on Computational Fluid Dynamics 6-8 th March 2017 Dr Sham Rane, Professor Ahmed Kovačević, Dr Di Yan, Professor Qian Tang, Centre for Compressor Technology,
More informationCFD Analysis of Forced Convection Flow and Heat Transfer in Semi-Circular Cross-Sectioned Micro-Channel
CFD Analysis of Forced Convection Flow and Heat Transfer in Semi-Circular Cross-Sectioned Micro-Channel *1 Hüseyin Kaya, 2 Kamil Arslan 1 Bartın University, Mechanical Engineering Department, Bartın, Turkey
More informationModelling of Gas-Liquid Two-Phase Flows in Vertical Pipes using PHOENICS
Modelling of Gas-Liquid Two-Phase Flows in Vertical Pipes using PHOENICS Vladimir Agranat, Masahiro Kawaji, Albert M.C. Chan* Department of Chemical Engineering and Applied Chemistry University of Toronto,
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 informationCFD simulation of an industrial FCC regenerator
UNIVERSIDAD NACIONAL DE COLOMBIA-SEDE MEDELLIN MASTER S THESIS CFD simulation of an industrial FCC regenerator Author: Juan David ALZATE-HERNANDEZ Supervisor: Alejandro MOLINA A thesis submitted in fulfillment
More informationA Comparative Analysis of Turbulent Pipe Flow Using k And k Models
A Comparative Analysis of Turbulent Pipe Flow Using k And k Models 1 B. K. Menge, 2 M. Kinyanjui, 3 J. K. Sigey 1 Department of Mathematics and Physics. Technical University of Mombasa, P.O BOX 90420-80100,Mombasa,
More informationExperimental and numerical study of velocity profiles in FGD reactor
Experimental and numerical study of velocity profiles in FGD reactor JAN NOVOSÁD, PETRA DANČOVÁ, TOMÁŠ VÍT Department of Power Engineering Equipment Technical University of Liberec Studentská 1402/2, 461
More informationOMAE FLUID-STRUCTURE INTERACTION MODELING OF SUBSEA JUMPER PIPE
Proceedings of the ASME 2014 33 rd International Conference on Ocean, Offshore and Arctic Engineering OMAE2014 June 8-13, 2014, San Francisco, CA USA OMAE2014-24070 FLUID-STRUCTURE INTERACTION MODELING
More informationCFD Modelling of Three-Phase Fluidized Bed with Low Density Solid Particles. Bachelor of technology in Chemical Engineering
CFD Modelling of Three-Phase Fluidized Bed with Low Density Solid Particles In the partial fulfillment of the requirement of Bachelor of technology in Chemical Engineering Submitted by Kuldeep Sharma Roll
More informationValidation analyses of advanced turbulence model approaches for stratified two-phase flows
Computational Methods in Multiphase Flow VIII 361 Validation analyses of advanced turbulence model approaches for stratified two-phase flows M. Benz & T. Schulenberg Institute for Nuclear and Energy Technologies,
More informationDrag Coefficient of Tall Building by CFD Method using ANSYS
Drag Coefficient of Tall Building by CFD Method using ANSYS Sharma P K 1, Dr. Parekar S R 2 1ME Student, Department of Civil Engineering, AISSM S, Pune, Maharashtra, India 2HOD, Department of Civil Engineering,
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 informationCFD simulations of gas solid flow in an industrial-scale circulating fluidized bed furnace using subgrid-scale drag models
PAPER IX CFD simulations of gas solid flow in an industrial-scale circulating fluidized bed furnace using subgrid-scale drag models Particuology 18 (2015) 66 75. Copyright 2015 Elsevier B.V. Reprinted
More informationActive Control of Separated Cascade Flow
Chapter 5 Active Control of Separated Cascade Flow In this chapter, the possibility of active control using a synthetic jet applied to an unconventional axial stator-rotor arrangement is investigated.
More informationEulerian model for the prediction of nucleate boiling of refrigerant in heat exchangers
Advanced Computational Methods and Experiments in Heat Transfer XI 51 Eulerian model for the prediction of nucleate boiling of refrigerant in heat exchangers D. Simón, M. C. Paz, A. Eirís&E.Suárez E.T.S.
More informationINVESTIGATION ON THE DRAG COEFFICIENT OF SUPERCRITICAL WATER FLOW PAST SPHERE-PARTICLE AT LOW REYNOLDS NUMBERS
S217 INVESTIGATION ON THE DRAG COEFFICIENT OF SUPERCRITICAL WATER FLOW PAST SPHERE-PARTICLE AT LOW REYNOLDS NUMBERS by Zhenqun WU, Hui JIN *, and Leijin GUO State Key Laboratory of Multiphase Flow in Power
More informationModelling interfacial heat transfer in a 2-phase flow in a packed bed
Modelling interfacial heat transfer in a 2-phase flow in a paced bed Dariusz ASENDRYCH, Paweł NIEGODAJEW Institute of Thermal Machinery Częstochowa University of Technology, Poland 1 Outline Motivation
More informationNumerical Simulation Analysis of Ultrafine Powder Centrifugal Classifier Bizhong XIA 1, a, Yiwei CHEN 1, b, Bo CHEN 2
5th International Conference on Information Engineering for Mechanics and Materials (ICIMM 2015) Numerical Simulation Analysis of Ultrafine Powder Centrifugal Classifier Bizhong XIA 1, a, Yiwei CHEN 1,
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 information