Lattice Boltzmann simulation of gas-solid heat transfer in random assemblies of spheres: The effect of solids volume fraction on the average Nusselt number for Re ≤ 100

被引：36

作者：

Chen, Y. ^{[1
]}

Mueller, C. R. ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Lab Energy Sci & Engn, Dept Mech & Proc Engn, Leonhardstr 21, CH-8092 Zurich, Switzerland

来源：

CHEMICAL ENGINEERING JOURNAL | 2019年 / 361卷

基金：

瑞士国家科学基金会;

关键词：

Thermal lattice Boltzmann method; Immersed moving boundary condition; Nusselt number correlation; Packed bed; Heat transfer; DIRECT NUMERICAL-SIMULATION; DRAG FORCE CORRELATION; TRANSFER COEFFICIENTS; RANDOM ARRAYS; CUBIC PARTICLES; PACKED-BEDS; FLOW; REYNOLDS; MASS;

D O I：

10.1016/j.cej.2018.10.182

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A thermal lattice Boltzmann method has been applied to simulate gas-solid heat transfer in a random assembly of spheres using an immersed moving boundary approach. The numerical data was correlated to propose an expression for the Nusselt number as a function of the Reynolds number and solid volume fraction over a wide range of solid volume fractions (phi = [0, 0.5]) for Reynolds numbers up to 100. It is hoped that the new Nusselt number correlation for gas-solid systems improves the accuracy of Euler-Euler and Euler-Lagrangian simulations of gas-solid heat transfer in packed and fluidized beds.

引用

页码：1392 / 1399

页数：8

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