NUMERICAL STUDY OF TURBULENT IMPINGING JET WITH A REFINED k-ε MODEL

作     者：Xu, J.L. Xu, Z. Huang, S.J. Zhang, K.Y. Xiao, M. 

作者机构：2nd Dep. Nanjing Univ. of Aeron. and Astron. Nanjing 210016 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2000年第12卷第4期

页      面：8-15页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This paper is sponsored by the Chinese Post-doctor Scientific Fund( No.( 2 0 0 0 ) 2 3) 

主　　题：Computer simulation Jets Mathematical models Turbulence 

摘      要：A refined k-Ε model re-considering the fluctuating pressure diffusion term in the dissipation rate equation (Ε-equation) is provided and used in the numerical study of circular semi-confined turbulent impinging jet. The results are compared with those of the standard k-Ε model and show that the predicting ability of the refined k-Ε model is much improved, especially for the turbulent kinetic energy k. So it is necessary to consider the effect of the fluctuating pressure diffusion term and to model this term correctly and exactly in the near wall region with the great adverse pressure gradient, where the effect of the pressure fluctuating is important. Therefore we can conclude that the new modeling idea expressed in this paper is correct and effective.