| 基于熵条件二阶差分格式的嵌套网格分区算法 |
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| 引用本文： | 董海涛,张立东,李椿萱.基于熵条件二阶差分格式的嵌套网格分区算法[J].计算物理,2003,20(2):102-106. |
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| 作者姓名： | 董海涛 张立东 李椿萱 |
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| 作者单位： | 国家计算流体力学实验室, 北京航空航天大学, 北京 100083 |
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| 摘 要： | 以带熵条件的二阶TVD格式为基本格式,设计了三维曲线坐标下的Euler方程数值计算方法.对多个物体使用分区嵌套网格设计了相应的分区算法.所建立的算法适用于处理物体相互分离以及相互接触的定常与非定常流动问题.给出了绕两圆柱的超声速流动在两圆柱处于不同位置时的详细结果,并模拟了装配鸭舵火箭弹在超声速旋转飞行时的气动特性.
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| 关 键 词： | 熵条件 二阶TVD格式 嵌套网格技术 分区算法 Euler方程数值模拟 |
| 文章编号： | 1001-246X(2003)02-0102-05 |
| 收稿时间： | 2001-09-04 |
| 修稿时间： | 2001年9月4日 |
Domain Decomposition Method Utilizing Chimera Grids in Conjunction with a Second Order Difference Scheme Based on an Entropy Condition |
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| DONG Hai-tao,ZHANG Li-dong,LEE Chun-Hian.Domain Decomposition Method Utilizing Chimera Grids in Conjunction with a Second Order Difference Scheme Based on an Entropy Condition[J].Chinese Journal of Computational Physics,2003,20(2):102-106. |
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| Authors: | DONG Hai-tao ZHANG Li-dong LEE Chun-Hian |
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| Institution: | National Laboratory for Computational Fluid Dynamics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | A domain decomposition method based on chimera grids is proposed for Euler solver. The solver is developed based on a class of second order TVD difference schemes with a new entropy condition. The developed procedure is capable of handling the steady and unsteady flows over multibodies located separately, or in contact, or under relative motion with each other. The procedure is demonstrated by a test case of supersonic flows over two circular cylinders parted by different distances. A detail result is presented. The procedure is then applied to simulate the rotating flow fields over rockets with canard rudders. |
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| Keywords: | entropy condition second order TVD scheme chimera grids domain decomposition method numerical simulation of Euler equations |
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