Introduction to Abaqus/CFD PDF
Preview Introduction to Abaqus/CFD
Introduction to Abaqus/CFD Day 1 • Lecture 1 Review of CFD Fundamentals • Lecture 2 Introduction • Lecture 3 Getting Started with Abaqus/CFD • Workshop 1 Unsteady flow across a circular cylinder • Lecture 4 CFD Modeling Techniques – Part 1 Introduction to Abaqus/CFD 1 Day 2 • Lecture 5 CFD Modeling Techniques – Part 2 • Lecture 6 Getting Started with FSI Using Abaqus/CFD • Workshop 1 Unsteady flow across a circular cylinder (continued) • Lecture 7 FSI Modeling Techniques • Workshop 2 Heat transfer analysis of a component-mounted electronic circuit board • Lecture 8 Postprocessing CFD/FSI Analyses • Workshop 2 Heat transfer analysis of a component-mounted electronic circuit board (continued) Introduction to Abaqus/CFD Legal Notices The Abaqus Software described in this documentation is available only under license from Dassault Systèmes and its subsidiary and may be used or reproduced only in accordance with the terms of such license. This documentation and the software described in this documentation are subject to change without prior notice. Dassault Systèmes and its subsidiaries shall not be responsible for the consequences of any errors or omissions that may appear in this documentation. No part of this documentation may be reproduced or distributed in any form without prior written permission of Dassault Systèmes or its subsidiary. © Dassault Systèmes, 2010. Printed in the United States of America Abaqus, the 3DS logo, SIMULIA and CATIA are trademarks or registered trademarks of Dassault Systèmes or its subsidiaries in the US and/or other countries. Other company, product, and service names may be trademarks or service marks of their respective owners. For additional information concerning trademarks, copyrights, and licenses, see the Legal Notices in the Abaqus 6.10 Release Notes and the notices at: http://www.simulia.com/products/products_legal.html. Introduction to Abaqus/CFD 2 Revision Status Lecture 1 5/10 New for 6.10 Lecture 2 5/10 New for 6.10 Lecture 3 5/10 New for 6.10 Lecture 4 5/10 New for 6.10 Lecture 5 5/10 New for 6.10 Lecture 6 5/10 New for 6.10 Lecture 7 5/10 New for 6.10 Lecture 8 5/10 New for 6.10 Workshop 1 5/10 New for 6.10 Workshop 2 5/10 New for 6.10 Introduction to Abaqus/CFD 3 4 Notes 5 Notes 6 Review of CFD Fundamentals Lecture 1 L1.2 Overview • Computational Solid Mechanics (CSM) versus Computational Fluid Dynamics (CFD) • CFD Basics • Governing Equations • Heat Transfer in Fluid Mechanics • Non-dimensional Quantities in CFD • Initial and Boundary Conditions • Solution of Governing Equations • Turbulence Modeling Introduction to Abaqus/CFD 7 L1.3 Overview • This lecture is optional. • It aims to introduce the necessary fluid dynamics concepts and quantities that are relevant to the Abaqus functionality that is presented in the subsequent lectures. • If you are already familiar with these concepts, this lecture may be omitted. Introduction to Abaqus/CFD Computational Solid Mechanics (CSM) versus Computational Fluid Dynamics (CFD) 8 L1.5 CSM vs. CFD Engineering problem Computational tools Answers Deformation of structure, Structural integrity Mises stress Velocity contours Flow patterns Baffle in wind Computational solid Computational fluid mechanics (CSM) dynamics (CFD) Introduction to Abaqus/CFD L1.6 CSM vs. CFD Computational Solid Mechanics Material Computational Boundary conditions, Analysis Physics Framework properties method Loads types Primarily Lagrangian Governing equations Elasticity (linear, nonlinear) Mesh deforms with material Equations of motion Plasticity Arbitrary Lagrangian-Eulerian (ALE) Static Elasticity Conductivity Mesh smoothing for large Dynamic Specific Heat deformation Linear perturbation Eulerian -Frequency Sources of nonlinearity Extreme deformation cases Material (CEL) Nonlinear elasticity Boundary conditions Method Plasticity Displacement, velocity, Finite element Material damage acceleration Geometric Loads Discretization Large deformations Point and distributed loads FE mesh Large rotations Body forces “Stress concentrations” Structural instability Interpolation order (buckling) Other loading Boundary Contact interactions Contact Model sizes Distributed Maximum ~ 2-3 M Loads Routine analysis < 0.5 M FE mesh Solution of discretized equations Direct solvers Boundary condition Introduction to Abaqus/CFD 9 L1.7 CSM vs. CFD Computational Fluid Dynamics Material Computational Boundary conditions, Analysis Physics Framework properties method Loads types Primarily Eulerian (Mesh is fixed) Governing equations -Viscosity Arbitrary Lagrangian-Eulerian (ALE) Steady-state Equation of motion (Newtonian, Fluid-structure interaction Transient Navier-Stokes (N-S) equations Non-Newtonian) Incompressible or Compressible -Conductivity Specialized versions -Specific Heat Velocity, pressure BCs Body forces Stokes flow Method: Sources of nonlinearity Finite volume N-S equations are fundamentally Finite difference nonlinear due to advectiveterms Finite element Far field Hybrid methods Material nonlinearity -Non-Newtonian viscosity Discretization: Finite volume mesh Boundary nonlinearity “Boundary layers” CFD mesh -FSI Treatment of various terms in Velocity Pressure = 0 equations Model sizes Maximum ~ 1000M Routine analysis ~ 0.5-1.5 M Solution of discretized Iterativeeq suoaltvioenrss Ncoon-sdliitpio n Bcoonudnidtiaornys Introduction to Abaqus/CFD L1.8 CSM vs. CFD • Key differentiators Feature Computationalsolid mechanics Computationalfluid mechanics Physics Equations General equations of motion Equations of motion reduceto incompressible/compressible Navier-Stokesequations Computational Lagrangian, Eulerian, Framework Arbitrary Lagrangian-Eulerian, Arbitrary Lagrangian-Eulerian Eulerian Nonlinearity Material, geometricand boundary Fundamentallynonlinear (advectiveterms), non- Newtonian viscosities, Fluid-structure interaction Material Solids: Fluids: properties Elasticity, plasticity, etc. Viscosity Computational Method Finite element Finite volume, method Finite element, Hybrid Feature Stress concentration, Boundary layers, Interpolation order Treatment of various terms in N-S equations Model sizes Maximum ~ 2-3 M Maximum ~ 1000M Routine analysis < 0.5 M Routine analysis ~ 0.5-1.5 M Equation Primarily direct, Primarily iterative solution Iterative method Introduction to Abaqus/CFD 10
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