Lattice-Boltzmann simulation of particle-laden flow over a backward-facing step

• 来源期刊: 中国物理（英文版）
• 关键词: lattice-BGK method particle-laden flow two-way coupling
• 年，卷（期）: 2004,（10）
• 页码范围: 1657-1664
• 页数: 8页
• 语种: 英文

摘要

This paper deals with the numerical simulation of gas-solid two-phase flows in an Eulerian-Lagrangian scheme.The particle tracks are calculated using a recently developed exponential Lagrangian scheme, and the approach presently used for the computation of fluid phase is based on a modified Lattice-BGK model. Different from earlier publications,the present study employs a two-way coupling mechanism to handle the interactions between carrier phase and dispersed phase in the model. This new model is applicable to simulating gas-solid two-phase flows. For example, based on the scheme, we have recaptured some phenomena of planar laminar particle-laden flow over a backward-facing step in this research, and found a new interesting phenomenon.