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	Large eddy simulation of particle wake effect and RANS simulation of turbulence modulation in gas-particle flows
	Zeng Zhuoxiong ; Zhou Lixing ; Qi Haiying
	2010-05-07 ; 2010-05-07
关键词	large eddy simulation gas-particle flow turbulence modulation WALL COLLISION MODEL 2-PHASE FLOW ROUGHNESS SPHERE Engineering, Chemical
中文摘要	The turbulence enhancement by particle wake effect is studied by large eddy simulation (LES) of turbulent gas flows passing a single particle. The predicted time-averaged and root-mean-square fluctuation velocities behind the particle are in agreement with the Reynolds-averaged Navier-Stokes modeling results and experimental results. A semi-empirical turbulence enhancement model is proposed by the present-authors based on the LES results. This model is incorporated into the second-order moment two-phase turbulence model for simulating vertical gas-particle pipe flows and horizontal gas-particle channel flows. The simulation results show that compared with the model not accounting for the particle wake effect, the present model gives simulation results for the gas turbulence modulation in much better agreement with the experimental results.
语种	英语 ; 英语
出版者	CHEMICAL INDUSTRY PRESS ; BEIJING ; NO. 3 HUIXINLI CHAOYANGQU, BEIJING 100029, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/16074]
专题	清华大学
推荐引用方式 GB/T 7714	Zeng Zhuoxiong,Zhou Lixing,Qi Haiying. Large eddy simulation of particle wake effect and RANS simulation of turbulence modulation in gas-particle flows[J],2010, 2010.
APA	Zeng Zhuoxiong,Zhou Lixing,&Qi Haiying.(2010).Large eddy simulation of particle wake effect and RANS simulation of turbulence modulation in gas-particle flows..
MLA	Zeng Zhuoxiong,et al."Large eddy simulation of particle wake effect and RANS simulation of turbulence modulation in gas-particle flows".(2010).

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