CFD中高阶格式的分区并行计算研究

High order scheme zone divided parallel algorithm study in CFD

结合高阶WENO格式和分区并行方法 ,在基于MPI平台的COWs和MPP上实现了CFD高阶格式的分区并行计算。高阶格式具有在光滑区高阶、间断区高分辨率等优点 ,但计算量较大 ;分区的方法能够有效地将CFD问题划分成可并行执行的交互式子问题 ,提高计算速度。通过典型计算可以看出 :算法不但保持了高阶WENO格式的优良性质 ,而且减少了程序运行的墙上时间。

Combined high order WENO scheme with zone divided parallel method, the high order zone divided parallel computation was realized on COWs and MPP systems based on MPI platform. High order scheme has good characters including high order at continuous zone and high resolution at discontinuous zone, but also bring more cost of calculation. Zone divided method can efficiently divide the CFD problem into sub problems which can interactively and paralleled execute. It can accelerate speed of calculation. Through the typical computation, it can be found that this algorithm not only maintain the advantages of high order scheme, but also decrease the wall time of program running.