Simulation of Hydrodynamic Characteristics of Glass Beads in Gas-Liquid-Solid Three Phase Fluidized Beds by Computational Fluid Dynamics
Simulation of Hydrodynamic Characteristics of Glass Beads in Gas-Liquid-Solid Three Phase Fluidized Beds by Computational Fluid Dynamics
复制标题
计算流体动力学模拟气-液-固三相流化床中玻璃珠的水动力特性
DOI：
10.6451/jete.201106.0248
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Shyh
中科院分区：
文献类型：
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作者：
K. Nguyen;Shyh
本文提出了一个用于了解三相流化床流体力学的计算流体力学模型。本文试图研究三相流化床的复杂流体力学特性：床层膨胀、两相含率、床层压降、流化床空隙率和速度分布。该模型是使用商业CFD代码Fluent 6.2开发的。阻力模型采用Gidaspow模型。分析结果的主要焦点是高度为1.5m，直径为0.1m的柱。Euler-Euler多相流模型能够较好地预测气液固流化床的整体性能。实验结果表明，气含率随气体流量的增大而增大，随液体流量的增大而减小。
A computational fluid dynamics model used to understand the hydrodynamics of three phase fluidized bed is presented in this paper. In the present investigation, an attempt has been made to study the complex hydrodynamics of three phase fluidized bed; bed expansion, holdup of two phases, bed pressure drop, fluidized bed voidage and velocity profile. The model is developed by using the commercial CFD code Fluent 6.2. The drag model for simulating is used Gidaspow model. The main focus on for analyzing the results is on the column with 1.5m height and diameter 0.1m. Euler-Euler multiphase flow approach is capable of predicting the overall performance of gas-liquid-solid fluidized bed. The results obtained show that the liquid holdup increased with the inlet liquid velocity, gas holdup increased with the flow rate of gas and decreased with an increase in the liquid flow rate.
Bull.Chem.Soc.Jpn。
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