低速流动的预处理多重网格求解

工程热物理学报 , 2008, 29(6): 931-934.

1.中国科学院工程热物理研究所,北京,100190;中国科学院研究生院,北京,100049

2.中国科学院工程热物理研究所,北京,100190

3.中国科学院工程热物理研究所,北京,100190

THE PRECONDITION AND MULTIGRID ALGORITHMS TO LOW SPEED FLOWS

本文采用预处理的时间推进方法,求解可压形式的Euler/Navier-Stokes方程,数值模拟低马赫数范围内的无粘、粘性流动.为了进一步加速收敛,并使用了多重网格技术.计算表明预处理能够保持可压缩求解方法在高速时的收敛特征,对于低速流动计算可以加速收敛并提高精度.

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