NAFEMS 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

Nomenclature1
1. Introduction3
2. Grid Types7
3. Applicability of Different Grid/Mesh Types9
4. Advantages/disadvantages of Different Grid/Mesh Types11
5. Quality13
5.1 Mesh Features
5.2 Things a Mesh Should Have/Do
5.3 Things a Mesh Should Not Have
6. Grid Generation Techniques17
6.1 Body Fitted Grid Generation
6.2 Unstructured Mesh Generation
6.3 Curvilinear Types
6.4 Control of Near Wall Grid Distributions
7. Meshing Non-Rectangular Block-Like Geometries25
8. Solution Convergence27
9. Sliding Meshes29
10. Adaptive Meshing31
11. Meshes and Moving Boundary Problems33
12. Multigrid Methods37
13. Boundary Condition Effects39
14. Some Error Estimators With Respect to Grid and Stability41
15. Mesh Planning45
16. Grid Generator Diagnostics47
17. Conclusions49
18. References53

    Document Details

    Reference

    R0079

    Authors

    Tucker. P;Mosquera. A

    Language

    English

    Type

    Publication

    Date

    2001-02-01

    Organisations

    Region

    Global

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