为了减小湍流流动问题的大涡模拟和直接数值模拟的入口湍流脉动边界条件对计算结果的影响,叙述了用于可压缩壁面湍流入口脉动生成的一种方法———"回收-调节"方法(recycling-rescaling method),叙述了这种方法的理论基础及简要推导过程,介绍了几种常用的"回收-调节"方法并指出了实现中的几个关键问题,分析了这种方法中存在的不足并对其应用进行了总结评述.该方法可为湍流、燃烧问题的大涡模拟和直接数值模拟方法的发展提供参考.
The inflow turbulent fluctuating boundary conditions play a key role in large eddy or direct numerical simulations of many turbulent problems.This paper introduced a method—recycling-rescaling method for inflow fluctuation generation of compressible wall bounded turbulent flows.The theory foundation and deduction of the method were given in the paper.Several recycling-rescaling methods were introduced and some key points in the implementation were indicated.Applications were summarized and limitations were discussed.This paper can be a reference for further investigation in LES(large eddy simulation) and DNS(direct numerical simulation) of turbulent flow and combustion problems.