三维槽道两相湍流的大涡模拟  

Large eddy simulation of particles in a turbulent channel flow

作　　者：柳朝晖[1] 翁磊[1] 贺铸[1] 郑楚光[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2004年第11期10-12,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重大基础研究专项经费资助项目 (G19990 2 2 2 0 7);国家自然科学基金资助项目 (5 0 2 76 0 2 1;5 0 0 0 6 0 0 0 3)

摘　　要：利用基于动态粘性亚网格模型的大涡模拟方法 ,分别模拟计算了Reτ=180的三维槽道湍流内的三种颗粒的运动状况 .统计得到的流体的平均速度、脉动速度等结果与有关文献中的DNS结果一致 ,不同的颗粒在流场中 (特别是近壁区 )表现出不同的行为 。The turbulent gas-particle flows in a channel (Re τ=180) were investigated by means of large eddy simulations. The subgrid-scale was modeled using dynamic eddy viscosity model. The simulation results of fluid agreed with the previous DNS results well. Three kinds of suspended particles were investigated and showed their different behaviors in the flow field, especially near the wall. The numerical results showed that the particles tended to concentrate near the wall.

关 键 词：气粒流动 两相湍流 槽道 大涡模拟 

分 类 号：TK16[动力工程及工程热物理—热能工程]