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Numerical simulation of sudden-expansion two-phase flows with two-scale second-order moment particle turbulence model |
| ZENG Zhuoxiong1, HAN Shoulei1, ZHOU Lixing2 |
| 1.Aeronautic and Mechanical Engineering College, Nanchang University of Aeronautics, Nanchang 330063, China; 2.Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China; |
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Abstract A two-scale second-order moment particle turbulence model is developed, based on the concept of particle large-scale fluctuation due to turbulence and particle small-scale fluctuation due to collision. The model is employed to simulate gas-particle flows in a sudden-expansion chamber. Simulation results are compared with the experimental results and with those obtained by the single-scale second-order moment two-phase turbulence model. It is shown that the two-scale model is with higher calculating accuracy than the single-scale model.
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Issue Date: 05 June 2007
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