复杂湍流流动的混合RANS/LES方法研究

摘要

混合RANS/LES方法是近年来复杂湍流模拟的重要方法.简要回顾了混合RANS/LES模拟方法的发展历程,着重总结和分析了分离涡混合模型、类Menter SST混合模型以及湍流能量谱一致混合方法三类混合模型的构造方法和发展历程,对这三种方法的应用以及优缺点进行了简要评述,最后指出了混合RANS/LES方法发展应该兼顾的问题,为下一步的混合RANS/LES模拟提供了参考.%Hybrid RANS/LES strategy is an important method for complex turbulent flow simulations in recent years.A review of the hybrid RANS/LES methodology developed history is presented briefly in this paper, and then three types of hybrid RANS/LES methodologies, which are DES (Detached Eddy Simulation ), Menter- SST similar hybrid model and turbulent- spectrum consistent hybrid model respectively, are summarized.The distinguished features and the limitations of these three types of hybrid models are analyzed concisely.Finally the issues that need serious consideration for hybrid model developing are presented.This paper provides references for development and application of hybrid models to complex turbulent flows.