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。
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.
出处
《空气动力学学报》
EI
CSCD
北大核心
2010年第2期125-131,共7页
Acta Aerodynamica Sinica
