| 共轭梯度方法在求解不可压N-S方程中的应用 |
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| 引用本文： | 张军,ZHANG Zhao-ming,褚江,REN Deng-feng.共轭梯度方法在求解不可压N-S方程中的应用[J].航空计算技术,2008,38(4):37-40. |
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| 作者姓名： | 张军 ZHANG Zhao-ming 褚江 REN Deng-feng |
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| 作者单位： | 1. 南京航空航天大学,航空宇航学院,江苏,南京,210016
2. 中国飞行试验研究院,陕西,西安,710089 |
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| 摘 要： | 采用非结构网格上的SIMPLE(Semi-implicit Method for Pressure-linked Equations)算法、k-ε湍流模型求解了三维不可压Navier-stokes方程,对低速不可压粘性流场进行数值模拟,在求解压强方程时采用共轭梯度方法,求解其它变量方程时,采用预处理的BICG(biconjugate gradients)算法.对NACA0012翼型绕流流场和飞艇绕流流场进行数值模拟并对结果进行分析,取得较好的结果.
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| 关 键 词： | 非结构网格 不可压N-S方程 k-ε啦湍流模型 共轭梯度方法 飞艇 |
Application of Conjugate Gradient Method in Solving Uncompressible N-S Equation |
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| ZHANG Jun,ZHANG Zhao-ming,CHU Jiang,REN Deng-feng.Application of Conjugate Gradient Method in Solving Uncompressible N-S Equation[J].Aeronautical Computer Technique,2008,38(4):37-40. |
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| Authors: | ZHANG Jun ZHANG Zhao-ming CHU Jiang REN Deng-feng |
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| Abstract: | SIMPLE(Semi-implicit Method for Pressure-linked Equations)method and turbulent model are utilized to solve 3D uncompressible Navier-stokes equation.Low speed uncompressible viscid flow fields are numerically simulated.When solving pressure equation,conjugate gradient algorithm is used.Preconditioned BICG(biconjugate gradients)algorithm is adopted to solve other variables equations.NACA0012 airfoil and airship fluid fields are computed and the results are analyzed.Good numerical results are achieved. |
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| Keywords: | unstructured grid uncompressible N-S equation turbulent model conjugate gradient method airship |
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