CFD simulation of gas-solid flow with a cluster structure-dependent drag coefficient model in circulating fluidized beds

被引：14

作者：

Wang Shuai ^{[1
]}

Lu Huang ^{[2
]}

Gao Jianmin ^{[1
]}

Lu Huilin ^{[1
]}

Liu Guodong ^{[1
]}

Xu Pengfei ^{[1
]}

He Yurong ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China

[2] Univ Tsukuba, Dept Comp Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

APPLIED MATHEMATICAL MODELLING | 2013年 / 37卷 / 16-17期

关键词：

Fluidization; Simulation; Kinetic theory; Computational fluid dynamic; Riser; Structure-dependent drag coefficient; KINETIC-THEORY; NUMERICAL-SIMULATION; MESOSCALE STRUCTURES; RISER; DENSE; HYDRODYNAMICS; VALIDATION; PARTICLES; STATE;

D O I：

10.1016/j.apm.2013.02.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To model the effect of clusters on hydrodynamics of gas and particles phases in risers, the interfacial drag coefficient is taken into account in computational fluid dynamic simulations by means of a two-fluid model. The momentum and energy balances that characterize the clusters in the dense phase and dispersed particles in the dilute phase are described by the multi-scale resolution approach. The model of cluster structure-dependent (CSD) drag coefficient is proposed on the basis of the minimization of energy dissipation by heterogeneous drag (MEDHD) in the full range of Reynolds number. The model of CSD drag coefficient is then incorporated into the two-fluid model to simulate flow behavior of gas and particles in a riser. The distributions of volume fraction and velocity of particles are predicted. Simulated results are in agreement with experimental data published in the literature. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：8179 / 8202

页数：24

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