| 基于Roe格式的低速预处理方法研究 |
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| 引用本文： | 牟斌,肖中云,刘刚,陈作斌.基于Roe格式的低速预处理方法研究[J].空气动力学学报,2010,28(2). |
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| 作者姓名： | 牟斌 肖中云 刘刚 陈作斌 |
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| 作者单位： | 中国空气动力研究与发展中心,四川,绵阳,621000 |
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| 摘 要： | 应用Weiss-Smith预处理矩阵,发展了Roe格式的预处理方法。在引入局部正交坐标系的前提下,推导了预处理后的Roe格式的定常及非定常形式,分别给出了一组适用于守恒变量的特征矩阵。最后就典型状态给出了验证算例,计算结果表明,本文发展的预处理方法正确可靠,在低速计算中大大提高了计算效率和计算精度,是一种非常有前途和价值的方法。
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| 关 键 词： | 低速流动 预处理 特征值 特征向量 特征矩阵 |
Low-speed preconditioning for Roe scheme |
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| MOU Bin,XIAO Zhong-yun,LIU Gang,CHEN Zuo-bin.Low-speed preconditioning for Roe scheme[J].Acta Aerodynamica Sinica,2010,28(2). |
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| Authors: | MOU Bin XIAO Zhong-yun LIU Gang CHEN Zuo-bin |
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| Institution: | Computational Aerodynamics Institute of China Aerodynamics Research and Development Center/a>;Mianyang Sichuan 621000/a>;China |
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| Abstract: | In this paper,low-speed preconditioning for Roe scheme is studied.The normal basis is introduced to obtain the eigenvector without geometry dependence,and the steady and unsteady preconditioned Roe scheme fluxes are developed on the basis.The eigenvalues and eigenvector are presented.Numerical validation indicates that the scheme is very accurate and effective,and the methods in this paper are proved to be promise for low speed flow. |
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| Keywords: | low speed flow precondition eigenvalue eigenvector eigenmatrix |
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