A two-scale second-order moment two-phase turbulence model for simulating dense gas-particle flows |
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| Authors: | Zhuoxiong? Zeng Email author" target="_blank">Lixing? ZhouEmail author Jian?Zhang |
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| Institution: | (1) Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China;(2) Department of Mechanical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang, 330034, China |
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| Abstract: | A two-scale second-order moment two-phase turbulence model accounting for inter-particle collision is developed, based on
the concepts of particle large-scale fluctuation due to turbulence and particle small-scale fluctuation due to collision and
through a unified treatment of these two kinds of fluctuations. The proposed model is used to simulate gas-particle flows
in a channel and in a downer. Simulation results are in agreement with the experimental results reported in references and
are near the results obtained using the single-scale second-order moment two-phase turbulence model superposed with a particle
collision model (USM-θ model) in most regions.
The project supported by the Special Funds for Major State Basic Research, China (G-1999-0222-08), and the Postdoctoral Science
Foundation (2004036239)
The English text was polished by Keren Wang |
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| Keywords: | Gas-particle flows Second-order moment model Two-scale fluctuation |
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