关于RNG代数湍流模式的研究  

THE STUDY ON ALGEBRAIC TRANSPORT TURBULENCE MODEL BASED ON RNG THEOBY

作　　者：姜宗林[1] 陈耀松[1] 

机构地区：[1]北京大学力学系

出　　处：《力学学报》1995年第1期99-103,共5页Chinese Journal of Theoretical and Applied Mechanics

摘　　要：研究了ＲＮＧ代数湍流模型，提出的涡黏性方程根的识别方法对涡黏性的选择给予了合理的物理意义，它减少了模型使用中的经验性，缩短了计算时间。另外关于用外部涡函数的双峰平均法来确定分离区附近边界层的厚度也是有意义的，它继承了ＢａｌｄｗｉｎＬｏｍａｘ代数模型的长处，改进了其不足，可用于分离流动的工程计算．In this paper, investigations on a RNG based algebraic transport turbulentmodel is carried out.Aproper way proposed here to choose a suitable root for the eddyviscosity from solutions of a cubic equation derived from the renormalization group theoryhas resonable physical meaning. In addition, two-peak average method is used to determinethe thickness of boundary layers inside separation regions,which has improved the way ofBaldwin-Lomax algebraic turbulence model and can be applied in engineering calculations.

关 键 词：RNG 代数模型 涡黏性 湍流 粘性流体力学 

分 类 号：O357.5[理学—流体力学]