结构化多重网格粘性流场数值模拟  

Calculation of Viscous Flow Fields with Multi-Structured Grids

作　　者：李杰[1] 周洲[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《计算机仿真》2009年第3期314-317,共4页Computer Simulation

摘　　要：流体力学控制方程的数值求解过程中,当网格加密或者粘性效应强的时候,流场收敛非常缓慢。为了解决计算的效率问题,在结构网格的基础上采用多重网格技术,模拟了二维RAE2822超临界翼型的亚音速绕流及三维M6机翼跨音速流场,仿真结果表明,采用多重网格方法在二维,三维粘性流场的计算结果都与实验结果吻合良好,与不采用多重网格方法比较,在求解中获得了相当满意的加速收敛效果。还比较了两种不同循环方式:V循环,W循环的加速效率,为多重网格的工程应用奠下基础。When the number of grid is very great or viscous effects dominate, the rate of convergence slows down dramatically ,thus resulting in inefficient solution. A promising way of acceleration is the introduction of multigrid algorithms. The muhigrid method is presented associated with structured grid to calculate the subsonic flow field around the RAE2822 and the transonic flow fields around the M6 wing configuration. All results confirm the efficiency of muhigrid. Also, the efficiency of V cycle is compared with that of W cycle. These results validated the possible utilization of the multigrid method in projects.

关 键 词：结构网格 多重网格方法 粘性绕流 跨音速流 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程] O35[理学—流体力学]