基于MPI的伪谱法大涡模拟并行计算的研究  

Research on parallel computing algorithm of LES used pseudo-spectral method based on MPI

作　　者：肖红林[1] 罗纪生[1] 

机构地区：[1]天津大学力学系,天津300072

出　　处：《计算机工程与应用》2009年第3期242-244,共3页Computer Engineering and Applications

基　　金：国家自然科学基金(No.10232020)~~

摘　　要：使用伪谱方法的大涡模拟准确、高效,但在高雷诺数情况下,计算量仍然非常巨大,需要采用并行方法,但是快速傅里叶变换的并行算法在实际应用中有很大的困难。针对这一问题,提出了一种新的基于MPI的伪谱法大涡模拟的并行计算方法。通过实例验证,该方法准确、易行、稳健,并且可以大幅提高计算速度,节省计算时间,这对大涡模拟在工程中的广泛应用具有重要意义。Large Eddy Simulation （LES） used pseudo-spectral method achieves great accuracy and high effficiency,and parallel computing algorithm is needed because of much calculation work in condition of high Reynolds number.However,it is difficult for parallel computing algorithm with FFI＂ to be used in practical application.Thus a new parallel computing algorithm based on Message Passing Interface （MPI） is put forward.According to the test this method is accurate,easy and stable,with higher computing speed and less computing time,which is important for LES to be widely used in engineering.

关 键 词：大涡模拟 谱方法 消息传递接口 并行计算 亚格子模型 

分 类 号：O246[理学—计算数学]