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.

Nomenclature	1
1. Introduction	3
2. Grid Types	7
3. Applicability of Different Grid/Mesh Types	9
4. Advantages/disadvantages of Different Grid/Mesh Types	11
5. Quality	13
5.1 Mesh Features
5.2 Things a Mesh Should Have/Do
5.3 Things a Mesh Should Not Have
6. Grid Generation Techniques	17
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 Geometries	25
8. Solution Convergence	27
9. Sliding Meshes	29
10. Adaptive Meshing	31
11. Meshes and Moving Boundary Problems	33
12. Multigrid Methods	37
13. Boundary Condition Effects	39
14. Some Error Estimators With Respect to Grid and Stability	41
15. Mesh Planning	45
16. Grid Generator Diagnostics	47
17. Conclusions	49
18. References	53

Document Details

Reference	R0079
Authors	Tucker. P Mosquera. A
Language	English
Audiences	Analyst Student
Type	Publication
Date	1st February 2001
Region	Global

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