Large eddy simulation of turbulent flow laden with binary mixture of particles

Neng Tsung Chang, Chih Hung Hsu, Keh Chin Chang

研究成果: Conference contribution

摘要

Particle-laden turbulent channel flow at Reτ=644, loaded with binary mixture of particles, is numerically studied using the Lagrangian particle tracking method coupled with large eddy simulation. Turbulence statistics of different particle groups are analyzed. Two particle-wall models are applied to this study with / without considering wall roughness. Taking into considerations of rough wall model, the effect of wall roughness in the computations strengthens the wall-normal particle velocity fluctuations. As a result, particles tend to move from the near-wall region to the central core region. It leads to decrement of particle accumulation in the near-wall region as compared to the case considering the smooth wall model. The wall-normal particle mixing capability is enhanced which results in the redistribution of particles in the channel. The behavior of particle motion in the turbulent channel flow should be, thus, dependent on not only the value of Stokes number but also the wall roughness level.

原文English
主出版物標題2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
頁面815-821
頁數7
版本PART A
DOIs
出版狀態Published - 2007 十二月 1
事件2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 - San Diego, CA, United States
持續時間: 2007 七月 302007 八月 2

出版系列

名字2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
號碼PART A
1 SYMPOSIA

Other

Other2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
國家/地區United States
城市San Diego, CA
期間07-07-3007-08-02

All Science Journal Classification (ASJC) codes

  • 機械工業
  • 凝聚態物理學

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