计算力学学报2016，Vol.33Issue(4)：478-484,7.DOI:10.7511/jslx201604008
一种基于单元几何变形的网格修匀方法
Mesh smoothing approach based on element geometrical deformation operation
摘要
Abstract
An efficient mesh smoothing approach for unstructured mesh based on element geometrical deformation operation is proposed.Firstly,shapes of all the individual elements are optimized by a two-step stretching-shrinking operation,and then the grid quality is improved through weighted average of the node position of each element in the mesh.In order to further improve the smoothing effect on the quality of grid,and enable the method to have a certain ability of mesh adj ustment,a strategy of wide range and large scale movement of elements is proposed combining dynamic mesh technique.In smoot-hing process appropriate algorithm for changing the position of element centroid and element size is pres-ented to further enhance the adj ustment ability of local grid density.The proposed approach can be applied to the quality improvement and adj ustment for planar and three-dimensional unstructured mesh. A number of examples are presented to show the effectiveness of the method.关键词
网格修匀/网格调整/单元几何变形/拉伸-收缩操作/动网格Key words
mesh smoothing/mesh adj ustment/element geometrical deformation/stretching-shrinking operation/dynamic mesh分类
数理科学引用本文复制引用
孙树立,苑远,勾志宏,张明磊..一种基于单元几何变形的网格修匀方法[J].计算力学学报,2016,33(4):478-484,7.基金项目
国家自然科学基金(11172004) （11172004）
北京市自然科学基金(1102020) （1102020）
973项目子课题(2010CB731503)资助项目 （2010CB731503）
