Assessment of Linear and Non-Linear Two-Equation Turbulence Models for Aerothermal Turbomachinery Flows

作     者：Pascale KULISA Cedric DANO 

作者机构：Laboratoire de Mecanique des Fluides et d'Acoustique UMR5509 Ecole Centrale de Lyon 69134 ECULLY Cedex France 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2006年第15卷第1期

页      面：14-26页

核心收录：

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）] 

主　　题：turbulence model numerical simulation turbomachinery. 

摘      要：Three linear two-equation turbulence models k- ε, k- ω and k- 1 and a non-linear k- 1 model are used for aerodynamic and thermal turbine flow prediction. The pressure profile in the wake and the heat transfer coefficient on the blade are compared with experimental data. Good agreement is obtained with the linear k-1 model. No significant modifications are observed with the non-linear model. The balance of transport equation terms in the blade wake is also presented. Linear and non-linear k - 1 models are evaluated to predict the threedimensional vortices characterising the turbine flows. The simulations show that the passage vortex is the main origin of the losses.