Large Scale Fluid-Structure Interaction by coupling OpenFOAM with external codes
|
|
- Della Carson
- 6 years ago
- Views:
Transcription
1 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 member of
2 Very Thin Shell/Membrane Wind - Interaction high Reynolds number flow complex wind characteristic complex geometries very light and flexible structures optimized structures (formfinding, shape optimization, shape adaptivity) large displacements aeroelastic effects Vision: Numerical Wind Tunnel Source: Architekturbüro Rasch & Bradatsch Motivation
3 Agenda Motivation & Objective Solution Approach Governing Equations Coupling Algorithm Software Environment Validation: Experimental FSI Benchmark Silsoe Cube Application: Outlook A.R.I.E.S. a mobile canopy structure Agenda
4 Solution Approach - Governing Equations Fluid field: Incompressible Navier Stokes Equations for Newtonian fluids momentum equation: 1 ( t ) ( ν ) u+ u d u = p+ u t ρ in F Ω continuity equation: u = 0 boundary & (, ) = ( ), (, ) = ( ) u x t u t p x t p t Γ Γ on F Γ initial conditions: (,0) = ( ), (,0) = ( ) u x u x p x p x 0 0 Governing Equations
5 Solution Approach - Governing Equations Fluid field: Structure field: Incompressible NSE Nonlinear Elastodynamics t 1 ( t ) ( ν ) u+ u d u = p+ u ρ momentum equation: 2 t d σ = f in S Ω constitutive equation: σ = D ε u = 0 boundary & (, ) = ( ), σ(, ) = σ ( ) d x t d t x t t Γ Γ on S Γ initial conditions: (,0) = ( ), σ(,0) = σ ( ) d x d x x x 0 0 Governing Equations
6 Solution Approach - Governing Equations Fluid field: Incompressible NSE Coupling Conditions at FS interface Γ : continuity of displacements: Structure field: Nonlinear Elastodynamics t 1 ( t ) ( ν ) u+ u d u = p+ u ρ d Γ FS = d Γ FS 2 t d σ = f continuity of surface traction: u = 0 t Γ FS = t Γ FS σ = D ε Governing Equations
7 Solution Approach Coupling Algorithm Partitioned approach with subiteration Structure field: geometric nonlinear Generalized-α time stepping Coupling: Dirichlet-Neumann type coupling Fixed point iteration with adaptive underrelaxation Fluid field: transient PISO ( Pressure Implicit with Operator Splitting ) Coupling Algorithm
8 Solution Approach Coupling Algorithm advance in interfield iteration: n n+1 Structure field: geometric nonlinear Generalized-α time stepping n 1 Predict interface forces σ + Γ n 1 n 1 n 1 n 1 n 1 Solve Md&& N ( d ) = R ( σ ) Evaluate interface displacements n 1 d + Γ Coupling Algorithm
9 Solution Approach Coupling Algorithm advance in interfield iteration: n n+1 Structure field: geometric nonlinear Generalized-α time stepping Coupling: Dirichlet-Neumann type coupling Fixed point with adaptive underrelaxation (Aitken method) Map interface displacements Calculate Aitken Relax displacements d n+ 1 Φ n+ 1 Γ dγ n n+ 1 T n+ 1 ( ΔdΓ ΔdΓ ) ΔdΓ i = ri 1 + n n+ 1 2 ( ΔdΓ ΔdΓ ) r (1 ) d% r d r d n + 1 n + 1 n Γ = i Γ + (1 i) Γ Coupling Algorithm
10 Solution Approach Coupling Algorithm advance in interfield iteration: n n+1 Structure field: geometric nonlinear Generalized-α time stepping Coupling: Dirichlet-Neumann type coupling Fixed point with adaptive underrelaxation Fluid field: seggregated with transient PISO Coupling Algorithm Apply boundary displacement Move fluid mesh Momentum predictor ( γ n 1) d % + = 0 pressure solution explicit vel. correction Evaluate boundary pressure % n 1 d + Γ n + 1 n n + 1 n + 1 n t u + u u ( ν u ) = p n 1 p + Γ
11 Solution Approach Coupling Algorithm advance in interfield iteration: n n+1 Structure field: geometric nonlinear Generalized-α time stepping Coupling: Dirichlet-Neumann type coupling Fixed point with adaptive underrelaxation Fluid field: seggregated with transient PISO Proove convergence: n 1 n 1 If e.g. d% + + Γ d% Γ ε goto Structure field else ti t i + 1 L2 Coupling Algorithm
12 Software Overview CSD-Design and Simulation: CARAT Coupling tool: CoMA CFD-Simulation: OpenFOAM Ansys CFX-11 mapping Software overview
13 Multi-Code Approach Advantages: Plug n Play system high flexibility use of best-suited codes for single-fields possible approach can be and is used for any surface-coupled problem, e.g.: FFI, Heat transfer, optimization of aeroelastic problems But: high coding effort setup more complicated Coupling Environment
14 Concept and Features CoMA = Coupling for Multiphysics Analysis General tool for control of surface-coupled simulations Important aspects: communication and parallelization interface data transfer coupling strategies Coupling Environment
15 Important aspects I communication and parallelization Single fields can work in parallel, based on domain decomposition Only exchange with subset of processes Per process multiple partitions with different tags and different discretizations possible Therefore: no restrictions on parallelization / decomposition concept in use Communication between CoMA and single field processes by Files easy to implement, existing single-field communication doesn t have to be touched MPI fast and efficient, first choice for large systems. Existing single field communication concept has to be enhanced and only small changes implemented (sub-communicator concept) Communication
16 Important aspects II data transfer at interfaces Mapping of node-based quantities at non-matching surface meshes Surface mesh discretization: 3-noded, 4-noded (is transformed) Mapping algorithm based on neighborhood-search and interpolation Quantities to be mapped can be Interpolated, e.g. displacements Summed up, e.g. forces Data transfer is conservative! Surface element-based quantities (FVM methods) have to be transformed before exchange (up to now) Class structure
17 Data Transfer at non-matching Meshes Interpolation e.g. displacements (structure fluid) Fluid elements, nodal values unknown u u ( ξ, η) = N ( ξ, η) u F S i Si Si Structure elements, nodal values known conservative summation e.g. loads (fluid structure) Values known Sj f = N ( ξ, η ) f i Sj i i Fi f Sj = N Sj ( ξi, ηi ) f Fi = N Sj ( ξi, ηi ) f Fi = j j i i j 1 i f Si Values unknown Coupling Environment
18 Validation doubly curved Surface field variable field variable difference < 1%! Coupling Environment
19 Important aspects III coupling strategies Basic coupling concepts: One-way coupling just pass information from side A to side B Two-way coupling without subiteration (explicit) with subiteration (implicit) Coupling strategies
20 Important aspects III coupling strategies Coupling in CoMA is based on concept of Exchange points One exchange point is basically defined as: A quantity with a certain dimension A sender and reciever processgroup Data transfer type (summation/interpolation) Order of appearance e.g. displacements in FSI: 3 From structure to fluid Interpolation 1 Exchange points are grouped together into an exchangepointgroup By a combination of exchange points different coupling strategies possible Coupling strategies
21 Important aspects III coupling strategies Additional features per exchange point are (acceleration strategies): Predictor for implicit coupling Order 0 to 3, based on history of quantity Underrelaxation for implicit coupling constant or Aitken Convergence proove e.g. Max steps, L2-Norm,... concept of exchange points is easily extendible, e.g. transfer of an adaptive set of eigenforms Coupling strategies
22 FluidFieldSolver solver based on OpenFOAM-libraries incompressible NSE using structured and unstructured meshes turbulence modelling: RANS (+LES) necessary extensions: communication with CoMA extensions to PSTREAM-library implicit coupling necessitates reset of mesh motion within a timestep extensions to mesh motion library drawback: non-conforming OF-version Coupling Environment
23 Agenda Motivation & Objective Solution Approach Governing Equations Coupling Algorithm Software Environment Validation: Experimental FSI Benchmark Silsoe Cube Application: Outlook A.R.I.E.S. a mobile canopy structure Agenda
24 Validation: Numerical FSI Benchmark numerical benchmark for FSI problems proposed by Turek & Hron within DFG Research Group 493 contribution to solution database interaction between elastic object and laminar incompressible flow simulation setup: rigid elastic beam no slip pressure outlet parabolic inlet velocity Validation Example
25 Validation: Numerical FSI Benchmark 9 different calculations to validate single-field and coupled solutions CFD fluid only: CSD structure only: FSI 1..3 coupled: differing inlet velocity, Re = [20, 100, 200] differing E-Moduls, static and dynamic differing density, inlet velocity and E-Modulus Validation Example
26 Technische Universität München Results Coupled Computations y A FSI 2: transient behavior, converges against const. amplitude and frequency Validation Example x
27 Results Coupled Computations A FSI 2: transient behavior, converges against const. amplitude and frequency FSI2 disp_x FSI2 disp_y y x 0,005 FSI2 disp_x 0,10 FSI2 disp_y 0,000 0,0 1,0 2,0 3,0 4,0 5,0 6,0 7,0 0,08 0,06 displacement [m] -0,005-0,010-0,015 displacement [m] 0,04 0,02 0,00 0,0 1,0 2,0 3,0 4,0 5,0 6,0 7,0-0,02-0,020-0,04-0,06-0,025-0,08-0,030 time [s] -0,10 time [s] X - direction frequency tip displacement [*10-3 m] reference 3,80-14,58 ± 12,44 own 3,86 14,28 ± 12,25 difference [%] 1,70 2,12 ± 1,54 Y - direction frequency tip displacement [*10-3 m] reference 2,00 1,23 ± 80,6 own 1,94 1,24 ± 80,4 difference [%] 3,00 0,80 ± 0,23 Validation Example
28 Results Coupled Computation FSI coupled: comparing beam s tip displacement reference own difference FSI [%] FSI 2 ± ± [%] FSI 3 ± ± [%] Validation Example
29 Validation: SILSOE Cube presentation of Majjid Hojat side view 1,500 1,000 0,500 Cp (mean) 0,000-0,500-1,000-1,500 0,000 0,500 1,000 1,500 2,000 2,500 3,000 normalized length Richards et al., Wind Pressure on a 6 m cube, J. Wind Eng. Ind. Aerodyn. Validation Example
30 A.R.I.E.S mobile canopy structure Gengnagel, 2006
31 Setup CSD simulation form finding given: desired final geometry solution: 1. find the right pre-stress distribution 2. correct deformation of side trusses redo form finding computation with pre-stress from previous form finding step continue computation with pre-stressed structure
32 Setup CSD simulation
33 Setup CFD simulation
34 CFD simulation
35 Steady State results wind from back side displacements and pressure distribution
36 Steady State results wind from front side pressure distribution and displacements
37 Technische Universität München max. inflow velocity [m/s] Unstead FSI wind gust from front side simulation time [s] v10m,max = 30 m/s
38 Agenda Motivation & Objective Solution Approach Governing Equations Coupling Algorithm Software Environment Validation: Experimental FSI Benchmark Silsoe Cube Application: Outlook A.R.I.E.S. a mobile canopy structure Agenda
39 Outlook numerical prediction of natural wind as inlet condition further investigation of code coupling strategies general shape optimization of surface-coupled problems with different shape parametrizations and accordingly developed solution strategies WIP: Experimental Benchmark Outlook
40 Thank you for your attention! The End
41
RESILIENT INFRASTRUCTURE June 1 4, 2016
RESILIENT INFRASTRUCTURE June 1 4, 2016 FROM EXPERIMENTAL WIND TUNNEL TO WIND-STRUCTURE INTERACTION SIMULATIONS OF A SHELL STRUCTURE Ahmed, AKA Abodonya Technical University of Munich, Chair of Structural
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 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 informationExtrapolation methods for accelerating unsteady partitioned fluid-structure interaction simulations
Int. Jnl. of Multiphysics Volume 5 Number 4 211 287 Extrapolation methods for accelerating unsteady partitioned fluid-structure interaction simulations Stephen Sachs*, Marcel Streitenberger, Dörte C. Sternel**,
More informationImplementing a Partitioned Algorithm for Fluid-Structure Interaction of Flexible Flapping Wings within Overture
10 th Symposimum on Overset Composite Grids and Solution Technology, NASA Ames Research Center Moffett Field, California, USA 1 Implementing a Partitioned Algorithm for Fluid-Structure Interaction of Flexible
More informationNumerical Benchmarking of Fluid-Structure Interaction: A comparison of different discretization and solution approaches
Numerical Benchmarking of Fluid-Structure Interaction: A comparison of different discretization and solution approaches Stefan Turek, Jaroslav Hron, Mudassar Razzaq, Hilmar Wobker, and Michael Schäfer
More informationProposal for numerical benchmarking of fluid-structure interaction between an elastic object and laminar incompressible flow
Proposal for numerical benchmarking of fluid-structure interaction between an elastic object and laminar incompressible flow Stefan Turek and Jaroslav Hron Institute for Applied Mathematics and Numerics,
More informationDiese Arbeit wurde vorgelegt am Lehrstuhl für computergestützte Analyse technischer Systeme
Diese Arbeit wurde vorgelegt am Lehrstuhl für computergestützte Analyse technischer Systeme Dreidimensionale Isogeometrische Elastische Festkörper für Fluid-Struktur Interaktionen Three-Dimensional Isogeometric
More informationFluid-Structure Interaction Problems using SU2 and External Finite-Element Solvers
Fluid-Structure Interaction Problems using SU2 and External Finite-Element Solvers R. Sanchez 1, D. Thomas 2, R. Palacios 1, V. Terrapon 2 1 Department of Aeronautics, Imperial College London 2 Department
More informationDiscrete Projection Methods for Incompressible Fluid Flow Problems and Application to a Fluid-Structure Interaction
Discrete Projection Methods for Incompressible Fluid Flow Problems and Application to a Fluid-Structure Interaction Problem Jörg-M. Sautter Mathematisches Institut, Universität Düsseldorf, Germany, sautter@am.uni-duesseldorf.de
More informationSimulation of Aeroelastic System with Aerodynamic Nonlinearity
Simulation of Aeroelastic System with Aerodynamic Nonlinearity Muhamad Khairil Hafizi Mohd Zorkipli School of Aerospace Engineering, Universiti Sains Malaysia, Penang, MALAYSIA Norizham Abdul Razak School
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 informationCoupling techniques for partitioned fluid structure interaction simulations with black box solvers
Coupling techniques for partitioned fluid structure interaction simulations with black box solvers Joris Degroote 1, Robby Haelterman 2, Sebastiaan Annerel 1, Jan Vierendeels 1 1 Ghent University, Department
More informationAn arbitrary lagrangian eulerian discontinuous galerkin approach to fluid-structure interaction and its application to cardiovascular problem
An arbitrary lagrangian eulerian discontinuous galerkin approach to fluid-structure interaction and its application to cardiovascular problem Yifan Wang University of Houston, Department of Mathematics
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 informationComputational Science and Engineering (Int. Master s Program) Conjugate Heat Transfer with the Multiphysics Coupling Library precice
Computational Science and Engineering (Int. Master s Program) Technische Universität München Master s Thesis Conjugate Heat Transfer with the Multiphysics Coupling Library precice Author: Lucía Cheung
More information1 Exercise: Linear, incompressible Stokes flow with FE
Figure 1: Pressure and velocity solution for a sinking, fluid slab impinging on viscosity contrast problem. 1 Exercise: Linear, incompressible Stokes flow with FE Reading Hughes (2000), sec. 4.2-4.4 Dabrowski
More informationINTRODUCCION AL ANALISIS DE ELEMENTO FINITO (CAE / FEA)
INTRODUCCION AL ANALISIS DE ELEMENTO FINITO (CAE / FEA) Title 3 Column (full page) 2 Column What is Finite Element Analysis? 1 Column Half page The Finite Element Method The Finite Element Method (FEM)
More informationDifferential relations for fluid flow
Differential relations for fluid flow In this approach, we apply basic conservation laws to an infinitesimally small control volume. The differential approach provides point by point details of a flow
More informationNewton-Multigrid Least-Squares FEM for S-V-P Formulation of the Navier-Stokes Equations
Newton-Multigrid Least-Squares FEM for S-V-P Formulation of the Navier-Stokes Equations A. Ouazzi, M. Nickaeen, S. Turek, and M. Waseem Institut für Angewandte Mathematik, LSIII, TU Dortmund, Vogelpothsweg
More informationNonlinear Modeling for Health Care Applications Ashutosh Srivastava Marc Horner, Ph.D. ANSYS, Inc.
Nonlinear Modeling for Health Care Applications Ashutosh Srivastava Marc Horner, Ph.D. ANSYS, Inc. 2 Motivation 12 Motivation Linear analysis works well for only small number of applications. The majority
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 informationCoupling Physics. Tomasz Stelmach Senior Application Engineer
Coupling Physics Tomasz Stelmach Senior Application Engineer Agenda Brief look @ Multiphysics solution What is new in R18 Fluent Maxwell coupling wireless power transfer Brief look @ ANSYS Multiphysics
More informationHomework 4 in 5C1212; Part A: Incompressible Navier- Stokes, Finite Volume Methods
Homework 4 in 5C11; Part A: Incompressible Navier- Stokes, Finite Volume Methods Consider the incompressible Navier Stokes in two dimensions u x + v y = 0 u t + (u ) x + (uv) y + p x = 1 Re u + f (1) v
More informationChapter 9: Differential Analysis
9-1 Introduction 9-2 Conservation of Mass 9-3 The Stream Function 9-4 Conservation of Linear Momentum 9-5 Navier Stokes Equation 9-6 Differential Analysis Problems Recall 9-1 Introduction (1) Chap 5: Control
More informationChapter 2. General concepts. 2.1 The Navier-Stokes equations
Chapter 2 General concepts 2.1 The Navier-Stokes equations The Navier-Stokes equations model the fluid mechanics. This set of differential equations describes the motion of a fluid. In the present work
More informationA numerical study of vortex-induced vibrations (viv) in an elastic cantilever
A numerical study of vortex-induced vibrations (viv) in an elastic cantilever Lorentzon, Johan; Austrell, Per Erik; Szász, Robert-Zoltán; Revstedt, Johan 2009 Link to publication Citation for published
More informationSTRUCTURAL ANALYSIS OF A WESTFALL 2800 MIXER, BETA = 0.8 GFS R1. By Kimbal A. Hall, PE. Submitted to: WESTFALL MANUFACTURING COMPANY
STRUCTURAL ANALYSIS OF A WESTFALL 2800 MIXER, BETA = 0.8 GFS-411519-1R1 By Kimbal A. Hall, PE Submitted to: WESTFALL MANUFACTURING COMPANY OCTOBER 2011 ALDEN RESEARCH LABORATORY, INC. 30 Shrewsbury Street
More informationOn Verification and Validation of Spring Fabric Model
On Verification and Validation of Spring Fabric Model Zheng Gao, Qiangqiang Shi, Yiyang Yang, Bernard Moore, and Xiaolin Li Department of Applied Mathematics and Statistics Stony Brook University Stony
More informationINVESTIGATION OF AIRSHIP AEROELASTICITY USING FLUID- STRUCTURE INTERACTION *
164 008,0():164-171 INVESTIGATION OF AIRSHIP AEROELASTICITY USING FLUID- STRUCTURE INTERACTION * LIU Jian-min, LU Chuan-ing, XUE Lei-ping Department of Engineering Mechanics, Shanghai Jiaotong University,
More informationPressure-velocity correction method Finite Volume solution of Navier-Stokes equations Exercise: Finish solving the Navier Stokes equations
Today's Lecture 2D grid colocated arrangement staggered arrangement Exercise: Make a Fortran program which solves a system of linear equations using an iterative method SIMPLE algorithm Pressure-velocity
More informationCircular Bearing Performance Parameters with Isothermal and Thermo-Hydrodynamic Approach Using Computational Fluid Dynamics
Circular Bearing Performance Parameters with Isothermal and Thermo-Hydrodynamic Approach Using Computational Fluid Dynamics Amit Chauhan 1 Department of Mechanical Engineering, University Institute of
More informationCFD and Thermal Stress Analysis of Helium-Cooled Divertor Concepts
CFD and Thermal Stress Analysis of Helium-Cooled Divertor Concepts Presented by: X.R. Wang Contributors: R. Raffray and S. Malang University of California, San Diego ARIES-TNS Meeting Georgia Institute
More informationChalmers University of Technology
2016-11-16 1 What is an Abdominal Aortic Aneurysm(AAA)and how is it rectified? AAA's are caused due to local dilation of the abdominal aortic vessel common among males 60 years or over How do we treat
More informationAeroelastic Analysis of Engine Nacelle Strake Considering Geometric Nonlinear Behavior
Aeroelastic Analysis of Engine Nacelle Strake Considering Geometric Nonlinear Behavior N. Manoj Abstract The aeroelastic behavior of engine nacelle strake when subjected to unsteady aerodynamic flows is
More informationChapter 9: Differential Analysis of Fluid Flow
of Fluid Flow Objectives 1. Understand how the differential equations of mass and momentum conservation are derived. 2. Calculate the stream function and pressure field, and plot streamlines for a known
More informationEfficient simulation techniques for incompressible two-phase flow
3D-Surface Engineering für Werkzeugsysteme der Blechformteilefertigung - Erzeugung, Modellierung, Bearbeitung - Efficient simulation techniques for incompressible two-phase flow O. Mierka, O. Ouazzi, T.
More informationFLOWS IN LIQUID FOAMS
FLOWS IN LIQUID FOAMS A finite element approach A. SAUGEY, E. JANIAUD, W. DRENCKHAN, S. HUTZLER, D. WEAIRE Physics Department,, TRINITY COLLEGE DUBLIN Facing a problem of fluid flow in a physical system,
More informationSIMULATION OF FLUID-STRUCTURAL INTERACTION
SIMULATION OF FLUID-STRUCTURAL INTERACTION USING OPENFOAM Hua-Dong Yao Department of Applied Mechanics, Chalmers University of Technology Sep 15, 2014 Hua-Dong Yao Simulation of FSI using OpenFOAM Sep
More informationRobust Design Optimization of an Axial Compressor Johannes Einzinger ANSYS Germany GmbH
Robust Design Optimization of an Axial Compressor Johannes Einzinger ANSYS Germany GmbH 1 Motivation Turbo Machines show: Rotating and stationary Parts Transient Flow Field Choke, Stall Dynamic Blade Loading
More informationOPTIMAL DESIGN OF CLUTCH PLATE BASED ON HEAT AND STRUCTURAL PARAMETERS USING CFD AND FEA
International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 5, May 2018, pp. 717 724, Article ID: IJMET_09_05_079 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=5
More informationFundamentals of Fluid Dynamics: Elementary Viscous Flow
Fundamentals of Fluid Dynamics: Elementary Viscous Flow Introductory Course on Multiphysics Modelling TOMASZ G. ZIELIŃSKI bluebox.ippt.pan.pl/ tzielins/ Institute of Fundamental Technological Research
More informationLEAST-SQUARES FINITE ELEMENT MODELS
LEAST-SQUARES FINITE ELEMENT MODELS General idea of the least-squares formulation applied to an abstract boundary-value problem Works of our group Application to Poisson s equation Application to flows
More informationCalculation of Sound Fields in Flowing Media Using CAPA and Diffpack
Calculation of Sound Fields in Flowing Media Using CAPA and Diffpack H. Landes 1, M. Kaltenbacher 2, W. Rathmann 3, F. Vogel 3 1 WisSoft, 2 Univ. Erlangen 3 inutech GmbH Outline Introduction Sound in Flowing
More informationTime-adaptive methods for the incompressible Navier-Stokes equations
Time-adaptive methods for the incompressible Navier-Stokes equations Joachim Rang, Thorsten Grahs, Justin Wiegmann, 29.09.2016 Contents Introduction Diagonally implicit Runge Kutta methods Results with
More informationFinite Element Analysis Lecture 1. Dr./ Ahmed Nagib
Finite Element Analysis Lecture 1 Dr./ Ahmed Nagib April 30, 2016 Research and Development Mathematical Model Mathematical Model Mathematical Model Finite Element Analysis The linear equation of motion
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 informationarxiv: v1 [cs.ce] 26 Feb 2018
A novel reduced order model for vortex induced vibrations of long flexible cylinders Giovanni Stabile a,, Hermann G. Matthies b, Claudio Borri c a SISSA Mathlab, International School for Advanced Studies,
More informationfluid mechanics as a prominent discipline of application for numerical
1. fluid mechanics as a prominent discipline of application for numerical simulations: experimental fluid mechanics: wind tunnel studies, laser Doppler anemometry, hot wire techniques,... theoretical fluid
More informationInterface treatment for computational thermo-fluid-structure interaction
European Trilinos User Group meeting Munich, 03-05 June 2013, Germany Interface treatment for computational thermo-fluid-structure interaction Georg Hammerl Institute for Computational Mechanics Caroline
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 informationNumerical Investigation of Vortex Induced Vibration of Two Cylinders in Side by Side Arrangement
Numerical Investigation of Vortex Induced Vibration of Two Cylinders in Side by Side Arrangement Sourav Kumar Kar a, 1,, Harshit Mishra a, 2, Rishitosh Ranjan b, 3 Undergraduate Student a, Assitant Proffessor
More informationA note on the numerical treatment of the k-epsilon turbulence model Λ
A note on the numerical treatment of the k-epsilon turbulence model Λ Adrián J. Lew y, Gustavo C. Buscaglia z and Pablo M. Carrica Centro Atómico Bariloche and Instituto Balseiro, 8400 Bariloche, Argentina.
More informationSimulation of Cross Flow Induced Vibration
Simulation of Cross Flow Induced Vibration Eric Williams, P.Eng Graduate Student, University of New Brunswic, Canada Andrew Gerber, PhD, P.Eng Associate Professor, University of New Brunswic, Canada Marwan
More informationA monolithic fluid structure interaction solver Verification and Validation Application: venous valve motion
1 / 41 A monolithic fluid structure interaction solver Verification and Validation Application: venous valve motion Chen-Yu CHIANG O. Pironneau, T.W.H. Sheu, M. Thiriet Laboratoire Jacques-Louis Lions
More informationExample 37 - Analytical Beam
Example 37 - Analytical Beam Summary This example deals with the use of RADIOSS linear and nonlinear solvers. A beam submitted to a concentrated load on one extremity and fixed on the other hand is studied.
More informationNumerical methods for the Navier- Stokes equations
Numerical methods for the Navier- Stokes equations Hans Petter Langtangen 1,2 1 Center for Biomedical Computing, Simula Research Laboratory 2 Department of Informatics, University of Oslo Dec 6, 2012 Note:
More informationLecture 2: Fundamentals 2/3: Navier-Stokes Equation + Basics of Discretization
Lecture 2: Fundamentals 2/3: Navier-Stokes Equation Basics of Discretization V.Vuorinen Aalto University School of Engineering CFD Course, Spring 2018 January 15th 2018, Otaniemi ville.vuorinen@aalto.fi
More informationANALYSIS AND OPTIMIZATION OF A VERTICAL AXIS WIND TURBINE SAVONIUS-TYPE PANEL USING CFD TECHNIQUES
ANALYSIS AND OPTIMIZATION OF A VERTICAL AXIS WIND TURBINE SAVONIUS-TYPE PANEL USING CFD TECHNIQUES J. Vilarroig, S. Chiva*, R. Martínez and J. Segarra** *Author for correspondence ** Heliotec.SL Department
More informationComputational Engineering
Coordinating unit: 205 - ESEIAAT - Terrassa School of Industrial, Aerospace and Audiovisual Engineering Teaching unit: 220 - ETSEIAT - Terrassa School of Industrial and Aeronautical Engineering Academic
More informationInternational Engineering Research Journal Comparative Study of Sloshing Phenomenon in a Tank Using CFD
International Engineering Research Journal Comparative Study of Sloshing Phenomenon in a Tank Using CFD Vilas P. Ingle, Dattatraya Nalawade and Mahesh Jagadale ϯ PG Student, Mechanical Engineering Department,
More informationSOE3213/4: CFD Lecture 1
What is CFD SOE3213/4: CFD Lecture 1 3d 3d Computational Fluid Dynamics { use of computers to study uid dynamics. Solve the Navier-Stokes Equations (NSE) : r:u = 0 Du Dt = rp + r 2 u + F 4 s for 4 unknowns,
More informationAlternative numerical method in continuum mechanics COMPUTATIONAL MULTISCALE. University of Liège Aerospace & Mechanical Engineering
University of Liège Aerospace & Mechanical Engineering Alternative numerical method in continuum mechanics COMPUTATIONAL MULTISCALE Van Dung NGUYEN Innocent NIYONZIMA Aerospace & Mechanical engineering
More informationSECTION 1. Introduction to MD NASTRAN SOL 400
SECTION 1 Introduction to MD NASTRAN SOL 400 S1-1 S1-2 What is "MD NASTRAN"? Evolution of engineering challenges: Complex systems vs. "just parts" Interacting environments Disparate tools and databases
More informationLarge-eddy simulations for wind turbine blade: rotational augmentation and dynamic stall
Large-eddy simulations for wind turbine blade: rotational augmentation and dynamic stall Y. Kim, I.P. Castro, and Z.T. Xie Introduction Wind turbines operate in the atmospheric boundary layer and their
More informationSimplified Model of WWER-440 Fuel Assembly for ThermoHydraulic Analysis
1 Portál pre odborné publikovanie ISSN 1338-0087 Simplified Model of WWER-440 Fuel Assembly for ThermoHydraulic Analysis Jakubec Jakub Elektrotechnika 13.02.2013 This work deals with thermo-hydraulic processes
More informationFEM-Level Set Techniques for Multiphase Flow --- Some recent results
FEM-Level Set Techniques for Multiphase Flow --- Some recent results ENUMATH09, Uppsala Stefan Turek, Otto Mierka, Dmitri Kuzmin, Shuren Hysing Institut für Angewandte Mathematik, TU Dortmund http://www.mathematik.tu-dortmund.de/ls3
More informationParametric Investigation of the Common Geometry Shapes for Added Mass Calculation
Parametric Investigation of the Common Geometry Shapes for Added Mass Calculation Afsoun Koushesh* and Jin Lee Department of Mechanical Engineering, American University of Sharjah, Sharjah, UAE *Corresponding
More informationNumerical Simulation of 3-D One-Way Fluid-Structure Interaction in a Tube with Twisted Tape under Laminar and Turbulent Flow Regime
Numerical Simulation of 3-D One-Way Fluid-Structure Interaction in a Tube with Twisted Tape under Laminar and Turbulent Flow Regime Laith J. Habeeb 1, Fouad A. Saleh 2, Bassim M. Maael 2 1 Mechanical Engineering
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 informationFlow simulation on moving boundary-fitted grids and application to fluid-structure interaction problems
Flow simulation on moving boundary-fitted grids and application to fluid-structure interaction problems Martin Engel and Michael Griebel Institute of Numerical Simulation, University of Bonn, Wegelerstr.
More informationTowards Reduced Order Modeling (ROM) for Gust Simulations
Towards Reduced Order Modeling (ROM) for Gust Simulations S. Görtz, M. Ripepi DLR, Institute of Aerodynamics and Flow Technology, Braunschweig, Germany Deutscher Luft und Raumfahrtkongress 2017 5. 7. September
More informationCOMPUTATIONAL FLOW ANALYSIS THROUGH A DOUBLE-SUCTION IMPELLER OF A CENTRIFUGAL PUMP
Proceedings of the Fortieth National Conference on Fluid Mechanics and Fluid Power December 12-14, 2013, NIT Hamirpur, Himachal Pradesh, India FMFP2013_141 COMPUTATIONAL FLOW ANALYSIS THROUGH A DOUBLE-SUCTION
More informationAn Overview of Fluid Animation. Christopher Batty March 11, 2014
An Overview of Fluid Animation Christopher Batty March 11, 2014 What distinguishes fluids? What distinguishes fluids? No preferred shape. Always flows when force is applied. Deforms to fit its container.
More informationNumerical analysis of fluid flow and heat transfer in 2D sinusoidal wavy channel
Numerical analysis of fluid flow and heat transfer in 2D sinusoidal wavy channel Arunanshu Chakravarty 1* 1 CTU in Prague, Faculty of Mechanical Engineering, Department of Process Engineering,Technická
More informationContent. Department of Mathematics University of Oslo
Chapter: 1 MEK4560 The Finite Element Method in Solid Mechanics II (January 25, 2008) (E-post:torgeiru@math.uio.no) Page 1 of 14 Content 1 Introduction to MEK4560 3 1.1 Minimum Potential energy..............................
More informationPerformance Prediction of the Francis-99 Hydroturbine with Comparison to Experiment. Chad Custer, PhD Yuvraj Dewan Artem Ivashchenko
Performance Prediction of the Francis-99 Hydroturbine with Comparison to Experiment Chad Custer, PhD Yuvraj Dewan Artem Ivashchenko Unrestricted Siemens AG 2017 Realize innovation. Agenda Introduction
More informationSYMMETRY BREAKING PHENOMENA OF PURELY VISCOUS SHEAR-THINNING FLUID FLOW IN A LOCALLY CONSTRICTED CHANNEL
ISSN 1726-4529 Int j simul model 7 (2008) 4, 186-197 Original scientific paper SYMMETRY BREAKING PHENOMENA OF PURELY VISCOUS SHEAR-THINNING FLUID FLOW IN A LOCALLY CONSTRICTED CHANNEL Ternik, P. University
More informationDrag Force Simulations of Particle Agglomerates with the Lattice-Boltzmann Method
Drag Force Simulations of Particle Agglomerates with the Lattice-Boltzmann Method Christian Feichtinger, Nils Thuerey, Ulrich Ruede Christian Binder, Hans-Joachim Schmid, Wolfgang Peukert Friedrich-Alexander-Universität
More informationPreprint Alexander Heinlein, Axel Klawonn, and Oliver Rheinbach Parallel Two-Level Overlapping Schwarz Methods in Fluid-Structure Interaction
Fakultät für Mathematik und Informatik Preprint 2015-15 Alexander Heinlein, Axel Klawonn, and Oliver Rheinbach Parallel Two-Level Overlapping Schwarz Methods in Fluid-Structure Interaction ISSN 1433-9307
More informationComputation Time Assessment of a Galerkin Finite Volume Method (GFVM) for Solving Time Solid Mechanics Problems under Dynamic Loads
Proceedings of the International Conference on Civil, Structural and Transportation Engineering Ottawa, Ontario, Canada, May 4 5, 215 Paper o. 31 Computation Time Assessment of a Galerkin Finite Volume
More informationNonlinear shape evolution of immiscible two-phase interface
Nonlinear shape evolution of immiscible two-phase interface Francesco Capuano 1,2,*, Gennaro Coppola 1, Luigi de Luca 1 1 Dipartimento di Ingegneria Industriale (DII), Università di Napoli Federico II,
More informationA numerical study of heat transfer and fluid flow over an in-line tube bank
Fluid Structure Interaction VI 295 A numerical study of heat transfer and fluid flow over an in-line tube bank Z. S. Abdel-Rehim Mechanical Engineering Department, National Research Center, Egypt Abstract
More informationDynamic Responses of Composite Marine Propeller in Spatially Wake
Dynamic Responses of Composite Marine Propeller in Spatially Wake Dynamic Responses of Composite Marine Propeller in Spatially Wake Y. Hong a, X.D. He a,*, R.G. Wang a, Y.B. Li a, J.Z. Zhang a, H.M. Zhang
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 informationGeometric nonlinear sensitivity analysis for nonparametric shape optimization with non-zero prescribed displacements
0 th World Congress on Structural and Multidisciplinary Optimization May 9-24, 203, Orlando, Florida, USA Geometric nonlinear sensitivity analysis for nonparametric shape optimization with non-zero prescribed
More informationPeristaltic Pump. Introduction. Model Definition
Peristaltic Pump Introduction In a peristaltic pump, rotating rollers are squeezing a flexible tube. As the pushed down rollers move along the tube, the fluid in the tube follows the motion. The main advantage
More informationTurbulence Modeling of Air Flow in the Heat Accumulator Layer
PIERS ONLINE, VOL. 2, NO. 6, 2006 662 Turbulence Modeling of Air Flow in the Heat Accumulator Layer I. Behunek and P. Fiala Department of Theoretical and Experimental Electrical Engineering Faculty of
More informationFluid structure interaction dynamic analysis of a mixed-flow waterjet pump
IOP Conference Series: Materials Science and Engineering OPEN ACCESS Fluid structure interaction dynamic analysis of a mixed-flow waterjet pump To cite this article: X W Pan et al 2013 IOP Conf. Ser.:
More informationComparison of Flow and Sedimentation Pattern for three Designs of Storm Water Tanks by Numerical Modelling
Comparison of Flow and Sedimentation Pattern for three Designs of Storm Water Tanks by Numerical Modelling 9th International Conference on Urban Drainage Modelling, Belgrad 2012 Simon Ebbert Nina Vosswinkel
More informationBenchmarking COMSOL Multiphysics 3.4
Benchmarking COMSOL Multiphysics 3.4 by Xiuling Wang, Ph.D. Darrell W. Pepper, Ph.D. Nevada Center for Advanced Computational Methods Department of Mechanical Engineering University of Nevada Las Vegas
More informationAnalysis of Planar Truss
Analysis of Planar Truss Although the APES computer program is not a specific matrix structural code, it can none the less be used to analyze simple structures. In this example, the following statically
More informationSupplementary Information for Engineering and Analysis of Surface Interactions in a Microfluidic Herringbone Micromixer
Supplementary Information for Engineering and Analysis of Surface Interactions in a Microfluidic Herringbone Micromixer Thomas P. Forbes and Jason G. Kralj National Institute of Standards and Technology,
More informationJEPPIAAR ENGINEERING COLLEGE
JEPPIAAR ENGINEERING COLLEGE Jeppiaar Nagar, Rajiv Gandhi Salai 600 119 DEPARTMENT OFMECHANICAL ENGINEERING QUESTION BANK VI SEMESTER ME6603 FINITE ELEMENT ANALYSIS Regulation 013 SUBJECT YEAR /SEM: III
More informationENHANCED HEAT TRANSFER IN LAMINAR PULSATING FLOW PAST A FLAT PLATE
HEFAT2012 9 th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics 16 18 July 2012 Malta ENHANCED HEAT TRANSFER IN LAMINAR PULSATING FLOW PAST A FLAT PLATE Cárdenas Miranda, A.*
More informationFlow-Induced Vibration Analysis of Supported Pipes with a Crack
Flow-Induced Vibration Analysis of Supported Pipes with a Crack Jin-Hyuk Lee 1 *, Samer Masoud Al-Said,3 1 Department of Mechanical Engineering, American University of Sharjah, Sharjah, UAE, Department
More informationFLUID-STRUCTURE AND ELECTRIC INTERACTION ANALYSIS OF PIEZOELECTRIC FLAP IN A CHANNEL USING A STRONGLY COUPLED FEM SCHEME
6th European Conference on Computational Mechanics (ECCM 6) 7th European Conference on Computational Fluid Dynamics (ECFD 7) 1115 June 2018, Glasgow, UK FLUID-STRUCTURE AND ELECTRIC INTERACTION ANALYSIS
More informationGame Physics. Game and Media Technology Master Program - Utrecht University. Dr. Nicolas Pronost
Game and Media Technology Master Program - Utrecht University Dr. Nicolas Pronost Soft body physics Soft bodies In reality, objects are not purely rigid for some it is a good approximation but if you hit
More informationMasters in Mechanical Engineering. Problems of incompressible viscous flow. 2µ dx y(y h)+ U h y 0 < y < h,
Masters in Mechanical Engineering Problems of incompressible viscous flow 1. Consider the laminar Couette flow between two infinite flat plates (lower plate (y = 0) with no velocity and top plate (y =
More informationComputers and Mathematics with Applications. Investigation of the LES WALE turbulence model within the lattice Boltzmann framework
Computers and Mathematics with Applications 59 (2010) 2200 2214 Contents lists available at ScienceDirect Computers and Mathematics with Applications journal homepage: www.elsevier.com/locate/camwa Investigation
More information