NUMERICAL SIMULATION OF A SPOUTED BED WITH A DRAFT TUBE WITH AND WITHOUT LIQUID SPRAY
NUMERICAL SIMULATION OF A SPOUTED BED WITH A DRAFT TUBE WITH AND WITHOUT LIQUID SPRAY
复制标题
带导流管的喷动床（带或不带液体喷雾）的数值模拟
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
D. Grecov
中科院分区：
文献类型：
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作者：
Tingwen Li;K. Pougatch;M. Salcudean;D. Grecov
用欧拉 - 欧拉（Eulerian-Eulerian）颗粒动力学模型进行了带有喷雾管（DTSB）平面喷口床（DTSB）中气体固体流量的数值模拟。研究了DTSB中流量的流体动力学，并将其与已发布的实验数据进行了比较。评估气体速度对颗粒循环速率的影响，并进行恢复系数的参数研究。此外，测试了几种不同的摩擦模型。提出了将液体喷雾剂注入到气体固体流中的模型，并将其实施到商业CFD求解器中，即Fluent 6.3。通过底部喷嘴引入的液体喷雾模拟，并检查了喷雾速率对固体浓度和速度在试管中的速度的影响。
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.