A two-scale second-order moment two-phase turbulence model for simulating dense gas-particle flows

• 来源期刊: 力学学报（英文版）
• 年，卷（期）: 2005,（5）
• 页码范围: 425-429
• 页数: 5页
• 语种: 英文

摘要

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.