| 基于非结构重叠网格的二维N-S方程求解与应用研究 |
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| 引用本文： | 田书玲,伍贻兆,夏健.基于非结构重叠网格的二维N-S方程求解与应用研究[J].空气动力学学报,2008,26(3). |
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| 作者姓名： | 田书玲 伍贻兆 夏健 |
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| 作者单位： | 南京航空航天大学空气动力学系,江苏,南京,210016;南京航空航天大学空气动力学系,江苏,南京,210016;南京航空航天大学空气动力学系,江苏,南京,210016 |
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| 摘 要： | 本文发展了非结构重叠网格技术.通过构造任意单元类型网格重叠的网格间边界确定算法、宿主单元搜索算法以及网格间插值算法,把非结构重叠网格推广应用于求解NS方程,并结合湍流模型模拟二维湍流流场.N-S方程的求解采用有限体积法,通量计算采用Osher格式,湍流模型采用SA模型.为验证本文方法的正确性和有效性,模拟了RAE2822翼型和某三段翼型绕流湍流流场,结果表明采用非结构重叠网格模拟复杂外形湍流流场不但网格生成效率高,而且容易推广应用于具有相对运动的非定常问题,具有较高的工程应用价值.
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| 关 键 词： | 计算流体力学 N-S方程 非结构重叠网格 SA湍流模型 |
The solution and application of 2D N-S equation on overset unstructured grid |
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| TIAN Shu-ling,WU Yi-zhao,XIA Jian.The solution and application of 2D N-S equation on overset unstructured grid[J].Acta Aerodynamica Sinica,2008,26(3). |
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| Authors: | TIAN Shu-ling WU Yi-zhao XIA Jian |
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| Abstract: | The overset unstructured grid method is developed to solve N-S equation.The developed intergrid boundary definition method,searching algorithm and interpolation method can tread arbitrary element grid.The finite volume method is implemented to N-S equation.SA turbulence model is used to simulate turbulence flow field.Two cases are used to validate the overset unstructured grid method.All the results show that the overset unstructured grid method is efficient in simulating complex computational domain and can be easily extended to unsteady flow problem. |
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| Keywords: | computational fluid dynamics N-S equation overset unstructured grid SA turbulence model |
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