SECOND-ORDER MOMENT TWO-PHASE TURBULENCE MODEL ACCOUNTING FOR TURBULENCE MODULATION IN SWIRLING SUDDEN-EXPANSION CHAMBER |
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Authors: | ZENG Zhuo-xiong |
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Affiliation: | Aeronautic and Mechanical Engineering College, Nanchang Hangkong University, Nanchang 330063, China |
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Abstract: | A semi-empirical turbulence enhancement model accounting for the particle-wake effect was incorporated into the second-order moment two-phase turbulence model and employed to simulate gas-particle flows in a swirling sudden-expansion chamber. The simulated results for two-phases mean velocities and fluctuation velocities coincide well with the experiment ones, which demonstrates that this model, in comparison with the turbulence model not accounting for the wake effect, leads to higher calculating accuracy. |
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Keywords: | gas-particle flows turbulence modulation particle wake effect |
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