| 三维非结构贴体直角网格的N-S方程数值模拟 |
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| 引用本文： | 李盾,纪楚群,马汉东.三维非结构贴体直角网格的N-S方程数值模拟[J].空气动力学学报,2006,24(4):477-481,490. |
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| 作者姓名： | 李盾 纪楚群 马汉东 |
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| 作者单位： | 航天空气动力技术研究院,北京,100074 |
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| 摘 要： | 基于八叉树数据结构,采用直接分层光顺的方法,解决了非结构直角网格在物面不正交贴体的难点,发展了任意复杂外形的三维非结构贴体直角网格,并且可以根据流场特征进行自适应处理。在此基础上采用最小二乘法对N-S方程进行了MUSCL有限体积法的非结构网格的粘性求解,提出了带约束边界条件的最小二乘法的处理办法。计算表明,三维非结构贴体直角网格的粘性求解,可以适应各种高超声速的复杂外形,计算结果与试验吻合较好。
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| 关 键 词： | 非结构贴体直角网格 网格自适应 有限体积 最小二乘 NS方程 |
| 文章编号： | 0258-1825（2006）04-0477-05 |
| 收稿时间： | 2005-03-05 |
| 修稿时间： | 2005-03-052005-06-20 |
Three dimensions unstructured Cartesian grid for Navier-Stokes equation |
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| LI Dun,JI Chu-qun,MA Han-dong.Three dimensions unstructured Cartesian grid for Navier-Stokes equation[J].Acta Aerodynamica Sinica,2006,24(4):477-481,490. |
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| Authors: | LI Dun JI Chu-qun MA Han-dong |
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| Institution: | China Aoademy of Aerospace Aerodynamic,Beijing 100074,China |
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| Abstract: | A octree data structure based direct hierarchical smoothing method is presented to resolve the problems of non-orthogonal Cartesian grid and viscous boundary layer near surface.Three dimensions adaptive Cartesian grid around arbitrary complex can be generated.Viscous flow is simulated using MUSCL finite volume unstructured Cartesian grid,least square method of constrained boundary condition is presented.Computational results agreed with experimental data,and the viscous Cartesian grid can simulate hypersonic flow around complex configurations well. |
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| Keywords: | unstructured viscous Cartesian grid adaptive mesh finite volume least square NS equations |
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