Lattice-Boltzmann simulation of particle-laden flow over a backward-facing step
Lattice-Boltzmann simulation of particle-laden flow over a backward-facing step
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DOI：
10.1088/1009-1963/13/10/014
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发表时间：
2004-10
期刊：
影响因子：
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通讯作者：
C. Sheng;Bao-Chang Shi;Zhaohui Liu;He Zhu;Zhao-Li Guo;Chuguang Zheng
中科院分区：
文献类型：
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作者：
C. Sheng;Bao-Chang Shi;Zhaohui Liu;He Zhu;Zhao-Li Guo;Chuguang Zheng
本文涉及欧拉-拉格朗日格式中气固两相流的数值模拟。使用最近开发的指数拉格朗日方案计算粒子轨迹，目前用于计算流体相的方法基于修改后的 Lattice-BGK 模型。与早期出版物不同，本研究采用双向耦合机制来处理模型中载体相和分散相之间的相互作用。该新模型适用于模拟气固两相流。例如，基于该方案，我们在本研究中重新捕获了向后台阶上的平面层流颗粒负载流的一些现象，并发现了一个新的有趣现象。
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.