基于湍流模型的转捩流动数值计算研究  

TURBULENCE MODEL BASED NUMERICAL INVESTIGATION OF TRANSITIONAL FLOWS

作　　者：杨中[1,2] 杜建一[1] 徐建中[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《工程热物理学报》2010年第2期231-234,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划(973计划)资助(No.2010CB227302)

摘　　要：本文通过求解雷诺平均NS方程,采用基于k-ω模型和添加控层流动能方程的三方程湍流模型计算转捩流动。相对于基于实验的转捩关系式模型,本模型对叶轮机械复杂的流动环境提供了更加真实的物理意义.ERCOFTAC T3系列实验和低压涡轮叶栅的算例表明该模型能够自动捕捉流动的转捩过程,但还需要进一步修正以能更加准确考虑各种因素对转捩的影响。In this paper the Reynolds-averaged Navier-Stokes approach with the laminar kinetic energy model based on k-ωturbulence model is utilized to investigate the transition flows.In contrast to experiment-correlation transition models,this approach provides more realistic significance for the complex flows in turbomachinery.The results from simulation of ERCOFTAC T3 experiments and a low-pressure turbine cascade show that the model has the capability to predict transition automatically;but further refinements are needed to account for more factors.

关 键 词：转捩 湍流模型 CFD 

分 类 号：TK123[动力工程及工程热物理—工程热物理]