A new method of structural mesh generation

Abstract

The invention provides a novel structural mesh generation method, which is based on an existing Delaunay triangulation technology to generate a structural mesh. Firstly, the discrete point set and boundary information of the computational region are obtained by reading the model data. Secondly, Delaunay triangulation is applied to the computational region. Then, the triangular mesh is used to generate the transitional mesh: the optimized Voronoi diagram; Finally, the transitional mesh element type is judged, and the mesh element is divided by the central circle method to generate the structured mesh. The invention can realize the automatic generation of the structural mesh of the complex region, and has high calculation precision, and reduces the dependence on human being compared with thetraditional method. Delauny triangulation technology is a mature unstructured mesh generation technology, which can generate adaptive and locally refined high-quality mesh for complex regions efficiently and quickly. This method adopts triangulated mesh as background mesh, so it can also realize mesh adaptation and local refinement.

Description

technical field [0001] The present invention relates to the technical field of pre-processing structural grid generation of computational fluid dynamics (abbreviated as CFD), in particular to a novel structural grid generation method. Background technique [0002] The automatic generation of structural meshes of two-dimensional complex shapes has always been one of the bottlenecks hindering the application of CFD engineering. The traditional structural grid generation method can generate high-quality single-block structural grids for simple areas, but with the development of science and technology, it is necessary to solve more and more complex and fine models. The traditional method can only be the complex area first. Partitioning, and then generating grids separately, grid splicing between different areas is very troublesome, and grid generation relies too much on manual control, which is a waste of time. In practical CFD engineering applications, it is often desired to g...

AI Technical Summary

Problems solved by technology

The traditional structural grid generation method can generate high-quality single-block structural grids for simple areas, but with the development of science and technology, it is necessary to solve more and more complex and fine models. The traditional method can only be the complex area first. Partition, and then generate grids separately. Grid splicing between different areas is very troublesome. Grid generation relies too much on manual control, which is a waste of time

In practical CFD engineering applications, it is often desirable to generate high-quality structural meshes conveniently and efficiently, but there is no effective method to automatically generate high-quality structural meshes

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