Healthy Buildings 2017 Europe July 2-5, 2017, Lublin, Poland
|
|
- Marianna Daniel
- 6 years ago
- Views:
Transcription
1 Healthy Buildings 2017 Europe July 2-5, 2017, Lublin, Poland Paper ID 0122 ISBN: Numerical Investigation of Transport and Deposition of Liquid Aerosol Particles in Indoor Environments Tunc Askan 1,*, Martin Kriegel 1 1 Hermann-Rietschel-Institut, Technische Universität Berlin, Berlin, Germany * Corresponding tunc.askan@tu-berlin.de SUMMARY In this study, the behaviour of liquid aerosol particles in indoor air environments is numerically investigated. These investigations are carried out for a 277 m² mixed ventilated room via steady state computational fluid dynamics simulations. An aqueous bovine serum albumin solution is chosen for the liquid phase of the aerosol since this solution was also utilized in previous experimental studies. The applied physical models are capable of capturing transport of the liquid aerosol particles in the air as well as those deposited on surfaces. A numerical approach based on one-way coupling between the physical models is developed in order to reduce the computational time. Using this method, simulations can be run in less than an hour. The results show that both airborne and fluid film transport of the liquid phase have a significant influence on the contamination distribution in the indoor environment. KEYWORDS Liquid aerosol particles, bovine serum albumin, deposition, computational fluid dynamics, CFD 1 INTRODUCTION Understanding the contaminant behaviour in indoor environments is gaining more importance as the time spent indoors increases. In this context, numerical modelling does not just enhance this understanding but also supports experimental studies like sampling. In this study, transport and deposition of liquid aerosol particles in an indoor environment are modelled using computational fluid dynamics (CFD) simulations. 2 METHODS The investigated geometry in this study is shown in Figure 1. It has a total area of 277 m² with a room height between 3 and 3.5 meters. This room is ventilated with mixed ventilation, in which the supply air ducts (marked in blue) are located on the ceiling and the exhaust air ducts (marked in red) on the floor. The total ventilation volume flow rate is defined based on an air change rate of 10 h -1. The contamination source is located in one of the supply air ducts (marked in green) and delivers liquid contaminant particles with a volume fraction of 10-3 and a mean particle diameter of 3.75 μm based on previous experimental studies. The CFD simulation in this study is carried out with STAR-CCM The spatial discretization is conducted with polyhedral cells with a maximum size of 22.5 cm and 3 prism layers with a total height of
2 2 cm. The final numerical grid, which is shown in Figure 2, consists of cells in which surface discretization varies between and cm. Figure 1: Geometry for the CFD simulation Figure 2: Numerical grid on a section plane and on the floor The steady, isothermal, uncompressible CFD simulation is carried out using the k-ε standard turbulence model with all y+ wall treatment, which is suitable for isothermal mixed ventilation applications. Investigated aerosol particles consist of 10% aqueous BSA (Bovine Serum Albumin) solution. In order to carry out the multiphase simulation, the density and viscosity of the BSA solution must be supplied. The density of this solution can be calculated arithmetically
3 using equation (1) where ρ is the density and V is the volume. On the other hand, the determination of the viscosity depends on an empirical study (Tanford and Buzzell, 1956). The data set from this study can be extended to achieve a concentration dependent definition of the viscosity as shown in Figure 3. (1) Transport of liquid aerosol particles in the air is modelled according to the Eulerian approach. Contrary to Lagrangian approach, the Eulerian approach does not track every particle, but considers the transport in every cell. Therefore, this approach needs less computational resources and is able to calculate the transport of the liquid phase within a gaseous phase. The Eulerian multiphase model demands high spatial discretization if the deposition of liquid aerosol particles on surfaces is to be considered. This can increase the computational time dramatically, especially for a large indoor environment like the one in this study. In order to overcome this drawback, an additional physical model is used. The film model is able to simulate the laminar behavior of the deposed liquid phase on surfaces. All these models (Flow models, Eulerian multiphase model and film model) for calculating the air flow, transport of the dispersed liquid phase and deposed liquid phase are one-way coupled. This means the flow solver influences the multiphase solver and the multiphase solver influences the film solver but not the other way around. Figure 3: Concentration dependent viscosity of aqueous BSA solution for ph 7 A numerical approach using the advantage of one-way coupling is developed in order to further optimize the total computational time. The flow and multiphase transport using the flow and multiphase solver (DMP solver: Dispersed Multiphase Solver) are calculated in the first step of this approach. After convergence is achieved for the flow field, the flow solver is deactivated and the film solver is activated for calculating the transport of the deposed fluid film. When the multiphase model has also converged, it is deactivated as well and the calculation is run with
4 only the film solver. This approach reduces the calculation time per iteration up to 80 % as shown in the Figure 4. Figure 4: Iteration elapsed time according to the physical models used 3 RESULTS The CFD simulation delivers feasible results using the numerical approach described above in less than an hour on a HPC (High Performance Computing) cluster with 96 cores. The flow field with the volume fraction of the dispersed phase on it is shown in Figure 5. In this figure, it can be seen that the vortex structures which are produced due to the air jet hitting the floor are interacting with each other. This interaction also enables the transport of the liquid BSA solution particles between counter-rotating vortices. Figure 5: Volume fraction of the BSA solution on a section plane near the contamination source
5 Figure 6: Contamination distribution on the floor (Top view) One other important outcome of this simulation is the distribution of the deposed liquid aerosol particles on the floor. This information is essential during the sampling in experimental field studies. Equation 2 is used to calculate the mass of the deposed dispersed phase, with m as the mass, s as the thickness of the fluid film, A as the area and ρ as the density of the fluid film. When this equation is implemented in the CFD simulation, the mass distribution of the fluid film can be visualized as shown in Figure 6. In this figure it can be observed that the minimum deposition is located under the supply air ducts. This is due to the impulse of the air jet which moves the fluid film outwards. Another point which can be seen from this image is that, as expected, the mass of the fluid film near the exhaust air ducts decreases. This CFD simulation shows the airborne transport and deposited liquid aerosol particles at the same time. On the left side of the geometry shown in figure 6, deposition can be observed, even though the contamination source is at the far right half of the geometry and the supply air duct in the corridor avoids the fluid film flow to the left side. This is caused through airborne transport of the liquid aerosol particles, which causes the deposition on the floor. 4 DISCUSSION In this study the transport and deposition of liquid aerosol particles in indoor environments are investigated using CFD simulation. Using existing physical models and a newly developed numerical approach, the steady simulations can be run in less than an hour. The results show the simultaneous transport of the liquid aerosol particles in the air and in the fluid film. The numerical results produced in this study should be validated with experimental studies. This is already planned for the next phase of this research project. Mesh independency studies are (2)
6 currently running and will also give more information about numerical error estimation for the CFD simulation. Following these studies, planned anisothermal steady and unsteady CFD simulations will deliver more information about the behavior of liquid aerosol particle in indoor environments. 5 CONCLUSIONS This study shows that the minimum deposition of the liquid aerosol particles occurs under the supply air ducts. The location of the maximum deposition depends on the location of the exhaust air ducts and the room geometry. The short computational time for the simulation makes it possible to integrate these results in experimental field work, which will increase the reliability of both experimental and numerical studies. 6 ACKNOWLEDGEMENT The project described in this study is funded by the German Federal Ministry of Health. 7 REFERENCES Tanford C. and Buzzell G. J The Viscosity of Aqueous Solutions if Bovine Serum Albumin Between ph 4.3 and In: The Journal of Phsical Chemistry, Feb. 1956:
Streamlining Aircraft Icing Simulations. D. Snyder, M. Elmore
Streamlining Aircraft Icing Simulations D. Snyder, M. Elmore Industry Analysis Needs / Trends Fidelity Aircraft Ice Protection Systems-Level Modeling Optimization Background Ice accretion can critically
More informationAdvances in Cyclonic Flow Regimes. Dr. Dimitrios Papoulias, Thomas Eppinger
Advances in Cyclonic Flow Regimes Dr. Dimitrios Papoulias, Thomas Eppinger Agenda Introduction Cyclones & Hydrocyclones Modeling Approaches in STAR-CCM+ Turbulence Modeling Case 1: Air-Air Cyclone Case
More informationCFD MODELING FOR PNEUMATIC CONVEYING
CFD MODELING FOR PNEUMATIC CONVEYING Arvind Kumar 1, D.R. Kaushal 2, Navneet Kumar 3 1 Associate Professor YMCAUST, Faridabad 2 Associate Professor, IIT, Delhi 3 Research Scholar IIT, Delhi e-mail: arvindeem@yahoo.co.in
More informationHigh-Lift Aerodynamics: STAR-CCM+ Applied to AIAA HiLiftWS1 D. Snyder
High-Lift Aerodynamics: STAR-CCM+ Applied to AIAA HiLiftWS1 D. Snyder Aerospace Application Areas Aerodynamics Subsonic through Hypersonic Aeroacoustics Store release & weapons bay analysis High lift devices
More informationOptimization of under-relaxation factors. and Courant numbers for the simulation of. sloshing in the oil pan of an automobile
Optimization of under-relaxation factors and Courant numbers for the simulation of sloshing in the oil pan of an automobile Swathi Satish*, Mani Prithiviraj and Sridhar Hari⁰ *National Institute of Technology,
More informationComputational Fluid Dynamics (CFD) Simulation in Air Duct Channels Using STAR CCM+
Available onlinewww.ejaet.com European Journal of Advances in Engineering and Technology, 2017,4 (3): 216-220 Research Article ISSN: 2394-658X Computational Fluid Dynamics (CFD) Simulation in Air Duct
More informationOn the numerical accuracy of particle dispersion simulation in operating theatres
On the numerical accuracy of particle dispersion simulation in operating theatres Wiebe Zoon 1,*, Marcel Loomans 1 and Jan Hensen 1 1 Eindhoven University of Technology, Eindhoven, the Netherlands * Corresponding
More informationMcNair Scholars Research Journal
McNair Scholars Research Journal Volume 2 Article 1 2015 Benchmarking of Computational Models against Experimental Data for Velocity Profile Effects on CFD Analysis of Adiabatic Film-Cooling Effectiveness
More informationCFD VALIDATION FOR SURFACE COMBATANT 5415 STRAIGHT AHEAD AND STATIC DRIFT 20 DEGREE CONDITIONS USING STAR CCM+
CFD VALIDATION FOR SURFACE COMBATANT 5415 STRAIGHT AHEAD AND STATIC DRIFT 20 DEGREE CONDITIONS USING STAR CCM+ by G. J. Grigoropoulos and I..S. Kefallinou 1. Introduction and setup 1. 1 Introduction The
More informationMultiphase Interactions: Which, When, Why, How? Ravindra Aglave, Ph.D Director, Chemical Process Industry
Multiphase Interactions: Which, When, Why, How? Ravindra Aglave, Ph.D Director, Chemical Process Industry Outline Classification of Multiphase Flows Examples: Free Surface Flow using Volume of Fluid Examples:
More informationAccurate and Efficient Turbomachinery Simulation. Chad Custer, PhD Turbomachinery Technical Specialist
Accurate and Efficient Turbomachinery Simulation Chad Custer, PhD Turbomachinery Technical Specialist Outline Turbomachinery simulation advantages Axial fan optimization Description of design objectives
More informationNUMERICAL STUDY OF CAVITATING FLOW INSIDE A FLUSH VALVE
Conference on Modelling Fluid Flow (CMFF 09) The 14th International Conference on Fluid Flow Technologies Budapest, Hungary, September 9-12, 2009 NUMERICAL STUDY OF CAVITATING FLOW INSIDE A FLUSH VALVE
More informationImpact of STAR-CCM+ v7.0 in the Automotive Industry Frederick J. Ross, CD-adapco Director, Ground Transportation
Impact of STAR-CCM+ v7.0 in the Automotive Industry Frederick J. Ross, CD-adapco Director, Ground Transportation Vehicle Simulation Components Vehicle Aerodynamics Design Studies Aeroacoustics Water/Dirt
More informationPreliminary Spray Cooling Simulations Using a Full-Cone Water Spray
39th Dayton-Cincinnati Aerospace Sciences Symposium Preliminary Spray Cooling Simulations Using a Full-Cone Water Spray Murat Dinc Prof. Donald D. Gray (advisor), Prof. John M. Kuhlman, Nicholas L. Hillen,
More informationS-ducts and Nozzles: STAR-CCM+ at the Propulsion Aerodynamics Workshop. Peter Burns, CD-adapco
S-ducts and Nozzles: STAR-CCM+ at the Propulsion Aerodynamics Workshop Peter Burns, CD-adapco Background The Propulsion Aerodynamics Workshop (PAW) has been held twice PAW01: 2012 at the 48 th AIAA JPC
More informationMODELING PARTICLE DEPOSITION IN VENTILATION DUCTS
MODELING PARTICLE DEPOSITION IN VENTILATION DUCTS MR Sippola 1* and WW Nazaroff 1,2 1 Dept. of Civil and Environmental Engineering, University of California, Berkeley, CA, USA 2 Indoor Environment Dept.,
More informationTurbulencja w mikrokanale i jej wpływ na proces emulsyfikacji
Polish Academy of Sciences Institute of Fundamental Technological Research Turbulencja w mikrokanale i jej wpływ na proces emulsyfikacji S. Błoński, P.Korczyk, T.A. Kowalewski PRESENTATION OUTLINE 0 Introduction
More informationIsotropic Porous Media Tutorial
STAR-CCM+ User Guide 3927 Isotropic Porous Media Tutorial This tutorial models flow through the catalyst geometry described in the introductory section. In the porous region, the theoretical pressure drop
More informationCoupling STAR-CCM+ with Optimization Software IOSO by the example of axial 8-stages jet engine compressor.
Coupling STAR-CCM+ with Optimization Software IOSO by the example of axial 8-stages jet engine compressor. Folomeev V., (Sarov Engineering Center) Iakunin A., (JSC Klimov) 1 Objectives To create the procedure
More informationComparison Between Numerical & PIV Experimental Results for Gas-Solid Flow in Ducts
Fabio Kasper Comparison Between Numerical & PIV Experimental Results for Gas-Solid Flow in Ducts Rodrigo Decker, Oscar Sgrott Jr., Henry F. Meier Waldir Martignoni Agenda Introduction The Test Bench Case
More informationCFD modelling of thickened tailings Final project report
26.11.2018 RESEM Remote sensing supporting surveillance and operation of mines CFD modelling of thickened tailings Final project report Lic.Sc.(Tech.) Reeta Tolonen and Docent Esa Muurinen University of
More informationCFD Best Practice Guidelines: A process to understand CFD results and establish Simulation versus Reality
CFD Best Practice Guidelines: A process to understand CFD results and establish Simulation versus Reality Judd Kaiser ANSYS Inc. judd.kaiser@ansys.com 2005 ANSYS, Inc. 1 ANSYS, Inc. Proprietary Overview
More informationComputational Fluid Dynamics (CFD) use in the simulation of the death end ventilation in tunnels and galleries
Advances in Fluid Mechanics VI 113 Computational Fluid Dynamics (CFD) use in the simulation of the death end ventilation in tunnels and galleries J. Toraño, R. Rodríguez & I. Diego GIMOC, Mining Engineering
More informationTutorial 17. Using the Mixture and Eulerian Multiphase Models
Tutorial 17. Using the Mixture and Eulerian Multiphase Models Introduction: This tutorial examines the flow of water and air in a tee junction. First you will solve the problem using the less computationally-intensive
More informationSimulation of Flow Development in a Pipe
Tutorial 4. Simulation of Flow Development in a Pipe Introduction The purpose of this tutorial is to illustrate the setup and solution of a 3D turbulent fluid flow in a pipe. The pipe networks are common
More informationTutorial: Modeling Liquid Reactions in CIJR Using the Eulerian PDF transport (DQMOM-IEM) Model
Tutorial: Modeling Liquid Reactions in CIJR Using the Eulerian PDF transport (DQMOM-IEM) Model Introduction The purpose of this tutorial is to demonstrate setup and solution procedure of liquid chemical
More informationCalculate a solution using the pressure-based coupled solver.
Tutorial 19. Modeling Cavitation Introduction This tutorial examines the pressure-driven cavitating flow of water through a sharpedged orifice. This is a typical configuration in fuel injectors, and brings
More informationCFD in COMSOL Multiphysics
CFD in COMSOL Multiphysics Christian Wollblad Copyright 2017 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
More informationStratified Oil-Water Two-Phases Flow of Subsea Pipeline
Stratified Oil-Water Two-Phases Flow of Subsea Pipeline Adib Zulhilmi Mohd Alias, a, Jaswar Koto, a,b,*, Yasser Mohamed Ahmed, a and Abd Khair Junaidi, b a) Department of Aeronautics, Automotive and Ocean
More informationModeling Evaporating Liquid Spray
Tutorial 16. Modeling Evaporating Liquid Spray Introduction In this tutorial, FLUENT s air-blast atomizer model is used to predict the behavior of an evaporating methanol spray. Initially, the air flow
More informationFLOWING FLUIDS AND PRESSURE VARIATION
Chapter 4 Pressure differences are (often) the forces that move fluids FLOWING FLUIDS AND PRESSURE VARIATION Fluid Mechanics, Spring Term 2011 e.g., pressure is low at the center of a hurricane. For your
More informationCFD Simulation for Stratified Oil-Water Two-Phase Flow in a Horizontal Pipe
CFD Simulation for Stratified Oil-Water Two-Phase Flow in a Horizontal Pipe Adib Zulhilmi Mohd Alias, a, Jaswar Koto, a,b,* and Yasser Mohamed Ahmed, a a) Department of Aeronautics, Automotive and Ocean
More informationKEY STAR TECHNOLOGIES: DISPERSED MULTIPHASE FLOW AND LIQUID FILM MODELLING DAVID GOSMAN EXEC VP TECHNOLOGY, CD-adapco
KEY STAR TECHNOLOGIES: DISPERSED MULTIPHASE FLOW AND LIQUID FILM MODELLING DAVID GOSMAN EXEC VP TECHNOLOGY, CD-adapco INTRODUCTION KEY METHODOLOGIES AVAILABLE IN STAR-CCM+ AND STAR-CD 1. Lagrangian modelling
More informationNUMERICAL SIMULATIONS OF FLOW THROUGH AN S-DUCT
NUMERICAL SIMULATIONS OF FLOW THROUGH AN S-DUCT 1 Pravin Peddiraju, 1 Arthur Papadopoulos, 2 Vangelis Skaperdas, 3 Linda Hedges 1 BETA CAE Systems USA, Inc., USA, 2 BETA CAE Systems SA, Greece, 3 CFD Consultant,
More informationComputational Study of Laminar Flowfield around a Square Cylinder using Ansys Fluent
MEGR 7090-003, Computational Fluid Dynamics :1 7 Spring 2015 Computational Study of Laminar Flowfield around a Square Cylinder using Ansys Fluent Rahul R Upadhyay Master of Science, Dept of Mechanical
More informationThree Dimensional Numerical Simulation of Turbulent Flow Over Spillways
Three Dimensional Numerical Simulation of Turbulent Flow Over Spillways Latif Bouhadji ASL-AQFlow Inc., Sidney, British Columbia, Canada Email: lbouhadji@aslenv.com ABSTRACT Turbulent flows over a spillway
More informationAir Assisted Atomization in Spiral Type Nozzles
ILASS Americas, 25 th Annual Conference on Liquid Atomization and Spray Systems, Pittsburgh, PA, May 2013 Air Assisted Atomization in Spiral Type Nozzles W. Kalata *, K. J. Brown, and R. J. Schick Spray
More informationUSING CFD SIMULATIONS TO IMPROVE THE MODELING OF WINDOW DISCHARGE COEFFICIENTS
USING CFD SIMULATIONS TO IMPROVE THE MODELING OF WINDOW DISCHARGE COEFFICIENTS Erin L. Hult 1, Gianluca Iaccarino 2, and Martin Fischer 2 1 Lawrence Berkeley National Laboratory, Berkeley, CA 2 Stanford
More informationRecent & Upcoming Features in STAR-CCM+ for Aerospace Applications Deryl Snyder, Ph.D.
Recent & Upcoming Features in STAR-CCM+ for Aerospace Applications Deryl Snyder, Ph.D. Outline Introduction Aerospace Applications Summary New Capabilities for Aerospace Continuity Convergence Accelerator
More informationHIGH PERFORMANCE COMPUTATION (HPC) FOR THE
HIGH PERFORMANCE COMPUTATION (HPC) FOR THE DEVELOPMENT OF FLUIDIZED BED TECHNOLOGIES FOR BIOMASS GASIFICATION AND CO2 CAPTURE P. Fede, H. Neau, O. Simonin Université de Toulouse; INPT, UPS ; IMFT ; 31400
More informationModeling Evaporating Liquid Spray
Tutorial 17. Modeling Evaporating Liquid Spray Introduction In this tutorial, the air-blast atomizer model in ANSYS FLUENT is used to predict the behavior of an evaporating methanol spray. Initially, the
More informationTransition Flow and Aeroacoustic Analysis of NACA0018 Satish Kumar B, Fred Mendonç a, Ghuiyeon Kim, Hogeon Kim
Transition Flow and Aeroacoustic Analysis of NACA0018 Satish Kumar B, Fred Mendonç a, Ghuiyeon Kim, Hogeon Kim Transition Flow and Aeroacoustic Analysis of NACA0018 Satish Kumar B, Fred Mendonç a, Ghuiyeon
More informationVerification and Validation in CFD and Heat Transfer: ANSYS Practice and the New ASME Standard
Verification and Validation in CFD and Heat Transfer: ANSYS Practice and the New ASME Standard Dimitri P. Tselepidakis & Lewis Collins ASME 2012 Verification and Validation Symposium May 3 rd, 2012 1 Outline
More informationDirections: 1) Delete this text box 2) Insert desired picture here
Directions: 1) Delete this text box 2) Insert desired picture here Multi-Disciplinary Applications using Overset Grid Technology in STAR-CCM+ CD-adapco Dmitry Pinaev, Frank Schäfer, Eberhard Schreck Outline
More informationMesh techniques and uncertainty for modelling impulse jetfans. O. A. (Sam) Alshroof. CFD manager Olsson Fire and Risk
Mesh techniques and uncertainty for modelling impulse jetfans O. A. (Sam) Alshroof CFD manager Olsson Fire and Risk Email: Sam.Alshroof@olssonfire.com Abstract This study presents the numerical modelling
More informationDesign and Optimization of Plants and Components for the Production of Polyurethane Foams using STAR-CCM+
Design and Optimization of Plants and Components for the Production of Polyurethane Foams using STAR-CCM+ Dr. Carsten Brodbeck, Bettina Landvogt Martin Schamberg Fraunhofer SCAI Hennecke Polyurethane Technology
More informationMESHLESS SOLUTION OF INCOMPRESSIBLE FLOW OVER BACKWARD-FACING STEP
Vol. 12, Issue 1/2016, 63-68 DOI: 10.1515/cee-2016-0009 MESHLESS SOLUTION OF INCOMPRESSIBLE FLOW OVER BACKWARD-FACING STEP Juraj MUŽÍK 1,* 1 Department of Geotechnics, Faculty of Civil Engineering, University
More informationSPEED-UP GEARBOX SIMULATIONS BY INTEGRATING SCORG. Dr. Christine Klier, Sahand Saheb-Jahromi, Ludwig Berger*
SPEED-UP GEARBOX SIMULATIONS BY INTEGRATING SCORG Dr. Christine Klier, Sahand Saheb-Jahromi, Ludwig Berger* CFD SCHUCK ENGINEERING Engineering Services in computational fluid Dynamics (CFD) 25 employees
More informationFAR-Wake Workshop, Marseille, May 2008
Wake Vortices generated by an Aircraft Fuselage : Comparison of Wind Tunnel Measurements on the TAK Model with RANS and RANS-LES Simulations T. Louagie, L. Georges & P. Geuzaine Cenaero CFD-Multiphysics
More informationAdvanced Applications of STAR- CCM+ in Chemical Process Industry Ravindra Aglave Director, Chemical Process Industry
Advanced Applications of STAR- CCM+ in Chemical Process Industry Ravindra Aglave Director, Chemical Process Industry Outline Notable features released in 2013 Gas Liquid Flows with STAR-CCM+ Packed Bed
More informationCoupling of STAR-CCM+ to Other Theoretical or Numerical Solutions. Milovan Perić
Coupling of STAR-CCM+ to Other Theoretical or Numerical Solutions Milovan Perić Contents The need to couple STAR-CCM+ with other theoretical or numerical solutions Coupling approaches: surface and volume
More informationA steady-state Eulerian-Lagrangian solver for non-reactive sprays
ICLASS 212, 12 th Triennial International Conference on Liquid Atomization and Spray Systems, Heidelberg, Germany, September 2-6, 212 A steady-state Eulerian-Lagrangian solver for non-reactive sprays A.
More informationSIMULATION OF THE SPRAY COATING PROCESS USING A PNEUMATIC ATOMIZER
ILASS-Europe 22 Zaragoza 9 11 September 22 SIMULATION OF THE SPRAY COATING PROCESS USING A PNEUMATIC ATOMIZER Q. Ye, J. Domnick, E. Khalifa Fraunhofer-Institute for Manufacturing Engineering and Automation
More informationUsing the Eulerian Multiphase Model for Granular Flow
Tutorial 21. Using the Eulerian Multiphase Model for Granular Flow Introduction Mixing tanks are used to maintain solid particles or droplets of heavy fluids in suspension. Mixing may be required to enhance
More informationCDA Workshop Physical & Numerical Hydraulic Modelling. STAR-CCM+ Presentation
CDA Workshop Physical & Numerical Hydraulic Modelling STAR-CCM+ Presentation ENGINEERING SIMULATION CFD FEA Mission Increase the competitiveness of companies through optimization of their product development
More informationIntroduction to C omputational F luid Dynamics. D. Murrin
Introduction to C omputational F luid Dynamics D. Murrin Computational fluid dynamics (CFD) is the science of predicting fluid flow, heat transfer, mass transfer, chemical reactions, and related phenomena
More informationDNV GL s 16th Technology Week
OIL & GAS DNV GL s 16th Technology Week Advanced Simulation for Offshore Application: Application of CFD for Computing VIM of Floating Structures 1 SAFER, SMARTER, GREENER OUTLINE Introduction Elements
More informationPressure Losses Analysis in Air Duct Flow Using Computational Fluid Dynamics (CFD)
International Academic Institute for Science and Technology International Academic Journal of Science and Engineering Vol. 3, No. 9, 2016, pp. 55-70. ISSN 2454-3896 International Academic Journal of Science
More informationTurbulent Premixed Combustion with Flamelet Generated Manifolds in COMSOL Multiphysics
Turbulent Premixed Combustion with Flamelet Generated Manifolds in COMSOL Multiphysics Rob J.M Bastiaans* Eindhoven University of Technology *Corresponding author: PO box 512, 5600 MB, Eindhoven, r.j.m.bastiaans@tue.nl
More information2D FLUID DEFORMATION INDUCED BY A ROTATIONAL RECIPROCATING PLATE IMPELLER IN A CYLINDRICAL VESSEL
14 th European Conference on Mixing Warszawa, 10-13 September 2012 2D FLUID DEFORMATION INDUCED BY A ROTATIONAL RECIPROCATING PLATE IMPELLER IN A CYLINDRICAL VESSEL Yoshiyuki Komoda a, Saki Senda a, Hiroshi
More informationDuct Pulsation Problem Captured and Solved Using STAR-CCM+
Duct Pulsation Problem Captured and Solved Using STAR-CCM+ Eric Duplain, Eng., M.Eng. (BMA) François McKenty, Eng., Ph.D. (BMA) Normand Brais, Eng., Ph.D. (BMA) John Viskup, President (Victory Energy)
More informationModelling of a Wall Inlet in Numerical Simulation of Airflow in Livestock Buildings
1 Modelling of a Wall Inlet in Numerical Simulation of Airflow in Livestock Buildings B. Bjerg 1, K. Svidt 2, S Morsing 3, G. Zhang 3 and J. O. Johnsen 3 1 The Royal Veterinary and Agricultural University,
More informationCFD Simulation of Fractal Impeller and Baffle for Stirred Tank Reactor with a Single Stage 4 Blade Rushton Turbine
CFD Simulation of Fractal Impeller and Baffle for Stirred Tank Reactor with a Single Stage 4 Blade Rushton Turbine MANSHOOR Bukhari 1, a, MOHD JAMALUDIN Saddam 2,b, KHALID Amir 3,c and ZAMAN Izzuddin 4,d
More informationStream Function-Vorticity CFD Solver MAE 6263
Stream Function-Vorticity CFD Solver MAE 66 Charles O Neill April, 00 Abstract A finite difference CFD solver was developed for transient, two-dimensional Cartesian viscous flows. Flow parameters are solved
More informationOffshore Platform Fluid Structure Interaction (FSI) Simulation
Offshore Platform Fluid Structure Interaction (FSI) Simulation Ali Marzaban, CD-adapco Murthy Lakshmiraju, CD-adapco Nigel Richardson, CD-adapco Mike Henneke, CD-adapco Guangyu Wu, Chevron Pedro M. Vargas,
More informationINVESTIGATION OF HYDRAULIC PERFORMANCE OF A FLAP TYPE CHECK VALVE USING CFD AND EXPERIMENTAL TECHNIQUE
International Journal of Mechanical Engineering and Technology (IJMET) Volume 10, Issue 1, January 2019, pp. 409 413, Article ID: IJMET_10_01_042 Available online at http://www.ia aeme.com/ijmet/issues.asp?jtype=ijmet&vtype=
More informationForces on particles and bubbles Literature
Lecture 1: Forces on particles and bubbles In order to describe the motion of particles and bubbles in fluids it is necessary to consider all relevant forces, external and fluid dynamic forces. Starting
More informationThis is the author s final accepted version.
Whyte, W., Hejab, M., Whyte, W.M. and Green, G. (2010) Experimental and CFD airflow studies of a cleanroom with special respect to air supply inlets. International Journal of Ventilation, 9(3), pp. 197-209.
More informationRecent Advances in Modelling Wind Parks in STAR CCM+ Steve Evans
Recent Advances in Modelling Wind Parks in STAR CCM+ Steve Evans Introduction Company STAR-CCM+ Agenda Wind engineering at CD-adapco STAR-CCM+ & EnviroWizard Developments for Offshore Simulation CD-adapco:
More informationComputational Fluid Dynamics as an advanced module of ESP-r Part 1: The numerical grid - defining resources and accuracy. Jordan A.
Computational Fluid Dynamics as an advanced module of ESP-r Part 1: The numerical grid - defining resources and accuracy Jordan A. Denev Abstract: The present paper is a first one from a series of papers
More informationKeywords: CFD, aerofoil, URANS modeling, flapping, reciprocating movement
L.I. Garipova *, A.N. Kusyumov *, G. Barakos ** * Kazan National Research Technical University n.a. A.N.Tupolev, ** School of Engineering - The University of Liverpool Keywords: CFD, aerofoil, URANS modeling,
More informationSimulation and Validation of Turbulent Pipe Flows
Simulation and Validation of Turbulent Pipe Flows ENGR:2510 Mechanics of Fluids and Transport Processes CFD LAB 1 (ANSYS 17.1; Last Updated: Oct. 10, 2016) By Timur Dogan, Michael Conger, Dong-Hwan Kim,
More informationCIBSE Application Manual AM11 Building Performance Modelling Chapter 6: Ventilation Modelling
Contents Background Ventilation modelling tool categories Simple tools and estimation techniques Analytical methods Zonal network methods Computational Fluid Dynamics (CFD) Semi-external spaces Summary
More informationParametric Study of Sloshing Effects in the Primary System of an Isolated LFR Marti Jeltsov, Walter Villanueva, Pavel Kudinov
1 Parametric Study of Sloshing Effects in the Primary System of an Isolated LFR 19.06.2013 Marti Jeltsov, Walter Villanueva, Pavel Kudinov Division of Nuclear Power Safety Royal Institute of Technology
More informationµ = Pa s m 3 The Reynolds number based on hydraulic diameter, D h = 2W h/(w + h) = 3.2 mm for the main inlet duct is = 359
Laminar Mixer Tutorial for STAR-CCM+ ME 448/548 March 30, 2014 Gerald Recktenwald gerry@pdx.edu 1 Overview Imagine that you are part of a team developing a medical diagnostic device. The device has a millimeter
More informationDevelopment of an Integrated Computational Simulation Method for Fluid Driven Structure Movement and Acoustics
Development of an Integrated Computational Simulation Method for Fluid Driven Structure Movement and Acoustics I. Pantle Fachgebiet Strömungsmaschinen Karlsruher Institut für Technologie KIT Motivation
More informationSimulation of Turbulent Flow around an Airfoil
1. Purpose Simulation of Turbulent Flow around an Airfoil ENGR:2510 Mechanics of Fluids and Transfer Processes CFD Lab 2 (ANSYS 17.1; Last Updated: Nov. 7, 2016) By Timur Dogan, Michael Conger, Andrew
More informationSimulation of Laminar Pipe Flows
Simulation of Laminar Pipe Flows 57:020 Mechanics of Fluids and Transport Processes CFD PRELAB 1 By Timur Dogan, Michael Conger, Maysam Mousaviraad, Tao Xing and Fred Stern IIHR-Hydroscience & Engineering
More informationIntroduction to Computational Fluid Dynamics Mech 122 D. Fabris, K. Lynch, D. Rich
Introduction to Computational Fluid Dynamics Mech 122 D. Fabris, K. Lynch, D. Rich 1 Computational Fluid dynamics Computational fluid dynamics (CFD) is the analysis of systems involving fluid flow, heat
More informationMissile External Aerodynamics Using Star-CCM+ Star European Conference 03/22-23/2011
Missile External Aerodynamics Using Star-CCM+ Star European Conference 03/22-23/2011 StarCCM_StarEurope_2011 4/6/11 1 Overview 2 Role of CFD in Aerodynamic Analyses Classical aerodynamics / Semi-Empirical
More informationThe Influence of Boundary Conditions on the Natural Ventilation in Buildings
The Influence of Boundary Conditions on the Natural Ventilation in Buildings Authors: José Carlos Teixeira, University of Minho, 4800-058 Guimarães, Portugal, jt@dem.uminho.pt Ricardo Sousa Lomba, University
More informationInvestigation of the critical submergence at pump intakes based on multiphase CFD calculations
Advances in Fluid Mechanics X 143 Investigation of the critical submergence at pump intakes based on multiphase CFD calculations P. Pandazis & F. Blömeling TÜV NORD SysTec GmbH and Co. KG, Germany Abstract
More informationEXPERIMENTAL VALIDATION OF STAR-CCM+ FOR LIQUID CONTAINER SLOSH DYNAMICS
EXPERIMENTAL VALIDATION OF STAR-CCM+ FOR LIQUID CONTAINER SLOSH DYNAMICS Brandon Marsell a.i. solutions, Launch Services Program, Kennedy Space Center, FL 1 Agenda Introduction Problem Background Experiment
More informationReproducibility of Complex Turbulent Flow Using Commercially-Available CFD Software
Reports of Research Institute for Applied Mechanics, Kyushu University, No.150 (60-70) March 2016 Reproducibility of Complex Turbulent Flow Using Commercially-Available CFD Software Report 2: For the Case
More informationSTAR-CCM+: Wind loading on buildings SPRING 2018
STAR-CCM+: Wind loading on buildings SPRING 2018 1. Notes on the software 2. Assigned exercise (submission via Blackboard; deadline: Thursday Week 3, 11 pm) 1. NOTES ON THE SOFTWARE STAR-CCM+ generates
More informationMultiphase Flow Developments in ANSYS CFX-12
Multiphase Flow Developments in ANSYS CFX-12 Thomas Svensson Medeso 2008 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary Outline Euler-Euler Wall Boiling Model Non-Drag Forces Euler-Lagrange
More informationSimulation of Turbulent Flow in an Asymmetric Diffuser
Simulation of Turbulent Flow in an Asymmetric Diffuser 1. Purpose 58:160 Intermediate Mechanics of Fluids CFD LAB 3 By Tao Xing and Fred Stern IIHR-Hydroscience & Engineering The University of Iowa C.
More informationCIBSE YEN CFD Presentation. Joseph Berthoud
CIBSE YEN CFD Presentation Joseph Berthoud 10 th May 2017 Introduction 20 Minutes / 40 Slides What is CFD Validation Jobs Physical Scale Modelling Questions Page 2 Introduction Nearly 20 years experience.
More informationMOMENTUM AND HEAT TRANSPORT INSIDE AND AROUND
MOMENTUM AND HEAT TRANSPORT INSIDE AND AROUND A CYLINDRICAL CAVITY IN CROSS FLOW G. LYDON 1 & H. STAPOUNTZIS 2 1 Informatics Research Unit for Sustainable Engrg., Dept. of Civil Engrg., Univ. College Cork,
More informationCoupled Simulation of Flow and Body Motion Using Overset Grids. Eberhard Schreck & Milovan Perić
Coupled Simulation of Flow and Body Motion Using Overset Grids Eberhard Schreck & Milovan Perić Contents Dynamic Fluid-Body Interaction (DFBI) model in STAR-CCM+ Overset grids method in STAR-CCM+ Advantages
More informationModelling Vented Hydrogen Deflagrations:
59 th UKELG Discussion Meeting Warwick University - April 26 th 2018 Modelling Vented Hydrogen Deflagrations: The influence of user variability and model sensitivity James Stewart Health & Safety Executive,
More informationDesign Optimization of a Weather Radar Antenna using Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD)
Design Optimization of a Weather Radar Antenna using Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) Fernando Prevedello Regis Ataídes Nícolas Spogis Wagner Ortega Guedes Fabiano Armellini
More informationSolution Recording and Playback: Vortex Shedding
STAR-CCM+ User Guide 6663 Solution Recording and Playback: Vortex Shedding This tutorial demonstrates how to use the solution recording and playback module for capturing the results of transient phenomena.
More informationA new meshing methodology for faster simulation of a Body-In-White dipping process
A new meshing methodology for faster simulation of a Body-In-White dipping process Madhusudhan Devanathan MBtech Group GmbH & Co. KGaA, Sindelfingen, Germany STAR Global Conference 19 1 March 01, Amsterdam
More informationInternational Power, Electronics and Materials Engineering Conference (IPEMEC 2015)
International Power, Electronics and Materials Engineering Conference (IPEMEC 2015) Numerical Simulation of the Influence of Intake Grille Shape on the Aerodynamic Performance of a Passenger Car Longwei
More informationTutorial: Hydrodynamics of Bubble Column Reactors
Tutorial: Introduction The purpose of this tutorial is to provide guidelines and recommendations for solving a gas-liquid bubble column problem using the multiphase mixture model, including advice on solver
More informationContents Contents Contents... 1 Abstract... 3 Nomenclature... 4 Index of Figures... 6 Index of Tables... 8 Introduction... 9 Theory...
Contents Contents Contents... 1 Abstract... 3 Nomenclature... 4 Index of Figures... 6 Index of Tables... 8 1. Introduction... 9 1.1 Overview... 9 1.2 Task... 10 2. Theory... 11 2.1 Continuity and Momentum
More informationDevelopment of Hybrid Fluid Jet / Float Polishing Process
COMSOL Conference - Tokyo 2013 Development of Hybrid Fluid Jet / Float Polishing Process A. Beaucamp, Y. Namba Dept. of Mechanical Engineering, Chubu University, Japan Zeeko LTD, United Kingdom Research
More informationTHE APPLICATION OF AN ATMOSPHERIC BOUNDARY LAYER TO EVALUATE TRUCK AERODYNAMICS IN CFD
THE APPLICATION OF AN ATMOSPHERIC BOUNDARY LAYER TO EVALUATE TRUCK AERODYNAMICS IN CFD A SOLUTION FOR A REAL-WORLD ENGINEERING PROBLEM Ir. Niek van Dijk DAF Trucks N.V. CONTENTS Scope & Background Theory:
More informationMulti-Objective Optimization of a Grease Mechanical Filter using modefrontier & STAR-CCM+ Marco Carriglio, Alberto Clarich ESTECO SpA Trieste (Italy)
Multi-Objective Optimization of a Grease Mechanical Filter using modefrontier & STAR-CCM+ Marco Carriglio, Alberto Clarich ESTECO SpA Trieste (Italy) Summary Analysis of the performance of the mechanical
More information