SECOND-ORDER MOMENT TWO-PHASE TURBULENCE MODEL ACCOUNTING FOR TURBULENCE MODULATION IN SWIRLING SUDDEN-EXPANSION CHAMBER  

作　　者：ZENG Zhuo-xiong 

机构地区：[1]Aeronautic and Mechanical Engineering College, Nanchang Hangkong University, Nanchang 330063, China

出　　处：《Journal of Hydrodynamics》2008年第1期54-59,共6页水动力学研究与进展B辑（英文版）

基　　金：the China Postdoctoral Science Foundation (Grant No.2004036239).

摘　　要：A semi-empirical turbulence enhancement model accounting for the particle-wake effect was incorporated into the second-order moment two-phase turbulence model and employed to simulate gas-particle flows in a swirling sudden-expansion chamber. The simulated results for two-phases mean velocities and fluctuation velocities coincide well with the experiment ones, which demonstrates that this model, in comparison with the turbulence model not accounting for the wake effect, leads to higher calculating accuracy.A semi-empirical turbulence enhancement model accounting for the particle-wake effect was incorporated into the second-order moment two-phase turbulence model and employed to simulate gas-particle flows in a swirling sudden-expansion chamber. The simulated results for two-phases mean velocities and fluctuation velocities coincide well with the experiment ones, which demonstrates that this model, in comparison with the turbulence model not accounting for the wake effect, leads to higher calculating accuracy.

关 键 词：gas-particle flows turbulence modulation particle wake effect 

分 类 号：TV13[水利工程—水力学及河流动力学]