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| Mesh smoothing approach based on element geometrical deformation operation |
| Received:June 01, 2016 Revised:June 15, 2016 |
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| DOI：10.7511/jslx201604008 |
| KeyWord:mesh smoothing mesh adjustment element geometrical deformation stretching-shrinking operation dynamic mesh |
| Author | Institution |
| 孙树立 |
北京大学 工学院力学与工程科学系, 湍流与复杂系统国家重点实验室, 北京 |
| 苑远 |
北京大学 工学院力学与工程科学系, 湍流与复杂系统国家重点实验室, 北京 |
| 勾志宏 |
北京大学 工学院力学与工程科学系, 湍流与复杂系统国家重点实验室, 北京 |
| 张明磊 |
北京大学 工学院力学与工程科学系, 湍流与复杂系统国家重点实验室, 北京 |
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| 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 adjustment,a strategy of wide range and large scale movement of elements is proposed combining dynamic mesh technique.In smoothing process appropriate algorithm for changing the position of element centroid and element size is presented to further enhance the adjustment ability of local grid density.The proposed approach can be applied to the quality improvement and adjustment for planar and three-dimensional unstructured mesh.A number of examples are presented to show the effectiveness of the method. |
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