NUMERICAL SIMULATION OF A SPOUTED BED WITH A DRAFT TUBE WITH AND WITHOUT LIQUID SPRAY

被引：8
作者：
Li, Tingwen [1 ]
Pougatch, Konstantin [1 ]
Salcudean, Martha [1 ]
Grecov, Dana [1 ]
机构：
[1] Univ British Columbia, Dept Mech Engn, Vancouver, BC V6T 1Z4, Canada
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2009年 / 87卷 / 02期
关键词：
spouted bed; draft tube; liquid spray; frictional model; numerical simulation; FLUIDIZED-BED; SOLIDS CIRCULATION; FRICTIONAL STRESS; PARTICLE-VELOCITY; VOIDAGE PROFILES; SELF-DIFFUSION; KINETIC-THEORY; FLOW; COEFFICIENT; RESTITUTION;
D O I：
10.1002/cjce.20161
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Numerical simulations of the gas-solid flow in a flat-based spouted bed with a draft tube (DTSB) are conducted with a Eulerian-Eulerian granular kinetic model. The hydrodynamics of the flow in DTSB is investigated and compared with published experimental data. The effect of the gas velocity on the particles circulation rate is evaluated, and parametric studies of the restitution coefficient are performed. In addition, several different frictional models are tested. A model for the liquid spray injection into a gas-solid flow is proposed and implemented into a commercial CFD solver, Fluent 6.3. The liquid spray introduced through the bottom nozzle is simulated, and the influence of spray rate on solids concentration and velocity inside the draft tube is examined.
引用
收藏
页码：237 / 251
页数：15
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