Computational Fluid Dynamics (CFD) Training

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Computational Fluid Dynamics (CFD) is a branch of fluid mechanics that uses numerical analysis and data structures to solve problems involving fluid flows. The Computational Fluid Dynamics (CFD) Training provided by Multisoft Systems is designed to enable the product design team to optimize their engineering design and reduce their risks of potential design failures. Hence, it helps both individuals and companies in getting a competitive advantage in the current marketplace. The participants are supposed to obtain their own licensed copies of ANSYS Fluent® (it should be ideal to be installed on most MS Windows 64-bit machines) or download a new and free student version of the software license from ANSYS.

Our offered Computational Fluid Dynamics (CFD) Training will help you in setting up the most appropriate CFD model concerning material properties, boundary conditions, solution monitor, and solution control parameters. It is also designed to help you in extracting the required results and plots from the wealth of information available at the solution stage.

In its successful completion, you will learn:
  • How to configure the most appropriate CFD model for the problem at hand?
  • How to configure the most appropriate turbulence model for particular applications?
  • How to conduct both steady-state and time-dependent fluid flow simulations?
  • How to resolve for both isothermal and non-isothermal thermo-fluid
  • applications by including all the necessary modes of heat transfer
  • How to resolve for both Incompressible and Compressible fluid flow applications
  • How to resolve for fluid flow through porous media and rotating machinery
  • How to extract the required results and plots from the wealth of information available at the solution stage?
Target audience
  • The Computational Fluid Dynamics (CFD) Training is mainly designed for the ANSYS Fluent® users, but it can also be pursued by the designers, engineers, scientists, and managers interested in gaining an insight into this technology and some of its vast range of capabilities.
Prerequisites
  • A participant of Computational Fluid Dynamics (CFD) Training needs to download a new and free student version of the software license from ANSYS or obtain his/her own licensed copies of ANSYS Fluent®. This software license should be ideal for installing on most MS Windows 64-bit machines.

Module: 1 Basic of Computational Fluid Dynamics

Review of viscous flow theory

Review of fundamental concepts – continuum, control volume, Eulerian and Lagrangian  methods of description of fluid flow; Reynolds transport equation – integral and differential forms of continuity, momentum, and energy equations.  

Navier-Stokes equations 

Navier-Stokes equations and boundary conditions; Non-dimensionalization of equations and order of magnitude analysis, dimensionless parameters and their significance. Exact solution of incompressible Navier-Stokes equations Couette flow, flow between rotating cylinders, fully developed flow through ducts. 

Introduction to Turbulence
 
Introduction to turbulent flow, stability of laminar flow, mean motion and fluctuation, time averaged turbulent flow equations, Reynolds stresses, boundary layer equations, boundary conditions, eddy viscosity, mixing length hypothesis. 

Module: 2 Discretization techniques

Section 1 

Experimental, theoretical and numerical methods of predictions; physical and mathematical classifications partial differential equations; computational economy; numerical stability; validation of numerical results; round-off-error and accuracy of numerical results; iterative convergence, condition for convergence, rate of convergence; under – and over – relaxations, termination of iteration; tridiagonal matrix algorithm; discretization – converting derivatives to their finite difference forms – Taylor’s series approach, polynomial fitting approach; discretization error. 

Section 2 

Steady one-dimensional conduction in Cartesian and cylindrical coordinates; handling of boundary conditions; two – dimensional steady state conduction problems in Cartesian and cylindrical co-ordinates– point-by-point and line-by-line method of solution, dealing with Dirichlet, Neumann, and Robins type boundary conditions; formation of discritized equations for regular and irregular boundaries and interfaces; grid generation methods; adaptive grids. 

Section 3

One-, two, and three-dimensional transient heat conduction problems in Cartesian and cylindrical co-ordinates – explicit, implicit, Crank-Nicholson and ADI schemes; stability criterion of these schemes; conservation form and conservative property of partial differential and finite difference equations; consistency, stability and convergence for marching problems.

Section 4

  • Finite volume method for diffusion and convection–diffusion problems – steady one-dimensional convection and diffusion; upwind, hybrid and power-law schemes, discretization of equation for two-dimension, computation of the flow field using stream function–vorticity formulation; SIMPLE, SIMPLER, SIMPLEC and QUICK schemes, solution algorithms for pressure–velocity coupling in steady flows; numerical marching techniques. 

Module 3: Introduction to 3D Modelling Using ANSYS WORKBENCH

Section 1

  • Different CAD Softwares, Graphical User Interface, Creating Sketcher Geometry and using Sketcher Tools, Selecting and Editing Geometry, Part Modeling, Feature based Modeling, Assembly with constraints. Import and Export File options. 

Section 2

  • ANSYS Workbench 
  • Workbench Overview 
  • Basic Workflow 
  • Alternate Workflow 
  • Cell States 
  • Sharing Data between Different Solvers 
  • File Location on Disk 
  • Use of Archive / Restore 
  • Working with Parameters / Refresh and Update 

Section 3

  • What is DesignModeler
  • Launching DesignModeler 
  • DesignModeler Interface
  • Details View 
  • Status / Info Bar 
  • Toolbars: Selection Tool 
  • Toolbars: View Controls 

Section 4

  • Concept of Planes and Sketches
  • New Plane and Sketch Creation
  • Sketching Interface
  • Draw Toolbox Examples
  • Modify Toolbox
  • Dimensions Toolbox
  • Constraints Toolbox
  • Settings Toolbox
  • Body Types
  • Body States3
  • 3D Feature Creation
  • Extrude, Revolve, Skin/Loft, Mirror, Move, Pattern, Boolean and Slice Operations
  • 2D Feature Creation
  • Surfaces from Sketches
  • Single and Multi-Body Parts
  • Single, Multi Solid Bodies

Section 5

  • Geometry Clean-up/Repair Introduction
  • Typical Geometry Issues
  • Analysis Tools
  • Repair Tools
  • Repair: Automation
  • Face / Edge Delete
  • Merge
  • Face Lift
  • Projection
  • Body Operation: Sew
  • Surface Extension

Section 6

  • Fill
  • Enclosure
  • Symmetry

Section 7

  • Geometry Properties
  • CAD Connections: Supported Readers & Plug-Ins/Interfaces
  • Bi-Directional CAD
  • Named Selection Manager
  • Pre-requisites for CAD Connections

Module 4: Introduction to 2D and 3D Meshing Using ANSYS WORKBENCH 

Section 1

  • What is ANSYS Meshing? 
  • Meshing Fundamentals 
  • Meshing Process in ANSYS Meshing 
  • ANSYS Meshing GUI 
  • Geometry Configuration 
  • Meshing for 3D Geometry 
  • Meshing for 2D Geometry 
  • Global Mesh Controls 
  • Local Mesh Controls 
  • Mesh Generation 
  • Named Selections 
  • Mesh Statistics and Mesh Metrics 
  • Parameterization in ANSYS Meshing 
  • Connections 
  • Selective Meshing 
  • Assembly Meshing4 

Section 2

  • Impact of the Mesh Quality
  • Impact of the Mesh Quality on the Solution
  • Grid Dependency
  • Hexa Vs. Tetra
  • Mesh Statistics and Mesh Metrics
  • Mesh Quality Metrics
  • Mesh Quality
  • Aspect Ratio
  • Smoothness
  • Mesh Metric Graph
  • Section Planes
  • Mesh Quality Check for Fluent
  • Factors Affecting Quality
  • Virtual Topology
  • Pinch

Module 5: Introduction to ANSYS Fluent

  • Introduction to FLUENT & ANSYS Products
  • Basic fluid flow and CFD (Theory topics are as mentioned above.)
  • Reading the grid (mesh) and editing of grid (mesh)
  • Materials
  • Boundary condition setup
  • Cell zones – fluid / solid
  • Porous medium
  • Different boundary conditions
  • Solver theory
  • Solver settings
  • Setting solver parameters
  • Convergence
  • Accuracy
  • Available solvers
  • Fluid Flow Modeling (Pressure & Velocity)
  • Turbulence Modeling
  • Aerodynamics Modeling
  • Turbo Machinery
  • Multi-Phase
  • Heat transfer Modeling (Conduction, Convection & Radiation)
  • Transient Flow Modeling
  • Species (Combustion Modeling)
  • Discrete Phase Modeling
  • Theory of Discretization
  • Convergence settings and monitoring
  • Post processing
     

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