于军,聂义勇.不可压缩流场多体运动问题的两种数值解法[J].计算力学学报,2006,23(5):583~587 |
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不可压缩流场多体运动问题的两种数值解法 |
Two numerical methods of multi-body movement in incompressible fluid |
修订日期:2004-10-11 |
DOI:10.7511/jslx20065109 |
中文关键词: 不可压缩流场 多体运动 重叠网格方法 移动网格方法 |
英文关键词:incompressible fluid field,multi-body movement,overlapping grid method,(moving mesh method), |
基金项目:中国科学院科研基金 |
于军 聂义勇 |
[1]中国科学院机器人学重点实验室,沈阳110016 [2]中国科学院研究生院,北京100039 |
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中文摘要: |
不可压缩流场中多体运动的数值模拟是计算流体动力学的前沿课题,目前可以求解此问题的两种高精度方法是重叠网格法和移动网格法。本文详细讨论了两种方法的理论基础,典型算法的实现过程,并采用两种方法对单圆柱和多圆柱运动问题进行了数值试验。通过分析比较,本文认为重叠网格法计算效率高于移动网格法,重叠网格法比移动网格法更适合于求解物体大位移运动问题,尤其当计算区域几何形状复杂时重叠网格法的优势更加明显。 |
英文摘要: |
This paper discusses the theory and approach of the two methods in detail.The numerical test of one-cylinder and tow-cylinder movement is conducted through the two methods.By comparison,we conclude that the efficiency of overlap grid method is higher than moving mesh method;the overlap grid method is more suitable to solve the problem of moving body with large displacement;the advantage of the overlap grid method is more distinct when the shape of the computation domain is complex. |
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