Unstructured grid generation for three dimensional  complex geomtries and self-adaption technique

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 1999, Vol. 16 ›› Issue (5): 552-558.

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Unstructured grid generation for three dimensional complex geomtries and self-adaption technique

Zhang Laiping, Yang Yongjian, Guo Chao, Zhang Hanxin, Gao Shuchun

China Aerodynamics Research and Development Center, Shichuan Mianyang 621000

Received:1998-06-15 Revised:1999-02-02 Online:1999-09-25 Published:1999-09-25

Abstract

Abstract: A technique on generation of unstructured grids for three dimensional complex geomtries is presented.Complex configurations are described by several typical kinds of surface patches.A 3D surface patch is first mapped to a 2D segment,then triangulated using a 2D grid generator based on the advancing front method,and finally mapped back to the original 3D shape.Tetrahedral grids are generated by an advancing front method and smoothed by a nodal relaxation technique and a Deluanay transformation.A mesh refinement technique is also given to obtain more accurate solutions.

Key words: unstructured grids, grid generation, grid optimization, self-adaption technique, NND Scheme

CLC Number:

V211

Zhang Laiping, Yang Yongjian, Guo Chao, Zhang Hanxin, Gao Shuchun. Unstructured grid generation for three dimensional complex geomtries and self-adaption technique[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1999, 16(5): 552-558.

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Unstructured grid generation for three dimensional complex geomtries and self-adaption technique

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