Experiments and Simulations on Bidisperse Solids Suspension in a Mixing Tank

被引：15

作者：

Ayranci, Inci ^{[1
]}

Kresta, Suzanne M. ^{[1
]}

Derksen, Jos J. ^{[1
,2
]}

机构：

[1] Univ Alberta, Edmonton, AB T6G 2G6, Canada

[2] Univ Aberdeen, Sch Engn, Aberdeen, Scotland

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2013年 / 36卷 / 11期

关键词：

Lattice-Boltzmann method; Mixing; Simulation; Solid-liquid suspension; Turbulence; LARGE-EDDY SIMULATIONS; COMPUTATIONAL FLUID-DYNAMICS; STIRRED-TANK; NUMERICAL-SIMULATION; AGITATED VESSELS; RUSHTON TURBINE; FLOW; MACROINSTABILITIES; PARTICLES; GEOMETRY;

D O I：

10.1002/ceat.201300409

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Experiments and simulations of a solids suspension process in a lab-scale stirred tank under turbulent conditions have been performed. Two impellers have been tested. The liquid-solid suspension consists of water and a mixture of glass and bronze particles. The simulations are Eulerian-Lagrangian with the liquid flow as the Eulerian part, being solved by means of a lattice-Boltzmann method combined with a large-eddy approach to turbulence modeling. Comparison with experimental visualizations indicates that the simulations are able to represent the start-up of the suspension process from a zero-velocity initial condition. Differences between experiment and simulation are observed near the bottom of the tank. The simulation data are used to highlight the collisional interaction between the two different types of solids, the role of baffles, and the effect of impeller type on the suspension process.

引用

页码：1957 / 1967

页数：11

共 32 条

[1] Effect of geometry on the mechanisms for off-bottom solids suspension in a stirred tank [J].