| 流场自适应叉树网格数值模拟三维复杂超声速流场 |
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| 引用本文： | 田正雨,李桦,潘沙.流场自适应叉树网格数值模拟三维复杂超声速流场[J].计算物理,2006,23(3):361-365. |
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| 作者姓名： | 田正雨 李桦 潘沙 |
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| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 建立了基于分区结构网格的三维贴体叉树形网格的数据结构,并阐述了在此基础上进行自适应分裂/合并判别方法.为节省网格量和保证流场结构捕捉质量,提出对自适应程度进行区域性控制,以及对流场结构进行“保护”性预加密的优化方式.通过应用该网格对三维复杂超声速流场算例的计算,证明该方法对网格加密控制方便,对流场结构分辨率高.
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| 关 键 词： | 自适应 叉树网格 各向异性 三维激波/激波干扰 |
| 文章编号： | 1001-246X（2006）03-0361-05 |
| 收稿时间： | 2005-01-17 |
| 修稿时间： | 2005-06-24 |
Numerical Investigation of Complex 3-D Supersonic Flows with a Self-Adaptive Tree Mesh |
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| TIAN Zheng-yu,LI Hua,PAN Sha.Numerical Investigation of Complex 3-D Supersonic Flows with a Self-Adaptive Tree Mesh[J].Chinese Journal of Computational Physics,2006,23(3):361-365. |
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| Authors: | TIAN Zheng-yu LI Hua PAN Sha |
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| Institution: | Institute of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | Based on an initial structural mesh, a data structure for a 3-D body-fitted tree mesh was built. Simplified algorithms were developed for anisotropic self-adaptive split and mergence. In order to reduce the number of mesh ceils we set restrictive self-adaptive levels for different zones divided in advance. A method of protective mesh split for structures in flow field was developed. Numerical simulations with different complex supersonic flow patterns were shown. It is proved that the anisotropic self-adaptive tree mesh is effective with less mesh cells and convenient for mesh refinement. High resolution for Now field is obtained. |
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| Keywords: | self-adaptation tree mesh anisotropy 3-D shock/shock interaction |
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