【摘 要】
：
介绍一种基于Jameson中心差分和Runge-Kutta时间推进的三维N-S方程计算的有限体积方法,计算点选取体积单元中心,为了提高收敛效率和程序稳定性,采用了当地时间步长和多重网格
【机 构】
：
Aero-engine Department
论文部分内容阅读
介绍一种基于Jameson中心差分和Runge-Kutta时间推进的三维N-S方程计算的有限体积方法,计算点选取体积单元中心,为了提高收敛效率和程序稳定性,采用了当地时间步长和多重网格方法,特别是针对粘性计算中计算网格形状比高的特点,隐式残差光顺采用当地变系数的方法,并专门设计了考虑计算网格形状比的人工粘性模型.应用本文方法对收扩喷管的三维流场和NACA0012翼型二维流场进行了计算,结果表明程序具有良好的收敛能力和较高的稳定性.
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