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Introduction to Grid & Mesh Generation for CFD





















This document is aimed at people new to Computational Fluid Dynamics (CFD). Once all surfaces have been defined, the most expensive solution stage is the grid generation. This stage has a profound influence on the analysis success. The various terms associated with grid generation are defined and the different grid types explained. The advantages and disadvantages of different grid types and indicated. The influence of grid quality on accuracy is outlined. Factors that influence grid quality along with desirable grid structure traits are identified. The relationship between grid, turbulence model and also boundary conditions is considered.

Basic expressions that help quantify grid quality are given. The key aspect of mesh planning is addressed. The document is relevant to users of finite volume, finite difference and finite element programs alike.


Contents

  • Nomenclature
  • Introduction
  • Grid Types
  • Applicability of Different Grid/Mesh Types
  • Advantages/disadvantages of Different Grid/Mesh Types
  • Quality
  • Mesh Features
  • Things a Mesh Should Have/Do
  • Things a Mesh Should Not Have
  • Grid Generation Techniques
  • Meshing Non-Rectangular Block-Like Geometries
  • Solution Converegence
  • Sliding Meshes
  • Adaptive Meshing
  • Meshes and Moving Boundary Problems
  • Multigrid Methods
  • Boundary Condition Effects
  • Some Error Estimators With Respect to Grid and Stability
  • Mesh Planning
  • Grid Generator Diagnostics
  • Conclusions
  • References




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About

P. G. Tucker & A. Mosquera
First Published - February 2001
Softback Report - 56 Pages