On Near-Wall Limiting Behaviors of Low-Reynolds-Number Reynolds-Stress Models

作     者：Sergey N. YAKOVENKO and Keh-Chin CHANG Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan 

会议名称：《第四届海峡两岸计算流体力学学术研讨会》

会议日期：2003年

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

关 键 词：Reynolds-stress model Channel flow Asymptotic analysis. 

摘      要：正 A new approach is proposed to resolve the unbalance contradiction found during checking near-wall behavior of modeled second-moment equations. In addition to presentation of sought functions as the expansions in terms of y but excluding the condition stemmed from the continuity equation for fluctuation velocity, it solves directly the approximate equations at small y values. The present analysis shows that orders of the major terms of expansions for vertical normal and shear stresses found in the grid-independent LRN RSM models are smaller than those of the conventional expansions.