曳力模型对模拟鼓泡塔气含率的影响
Effect of drag models on simulation of gas hold-up in bubble columns
查看参考文献14篇
文摘
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A transient two-phase and three-dimensional computational fluid dynamics(CFD)simulation within the Eulerian framework has been carried out to investigate the influence of drag models on the radial gas hold-up profile of a bubble column. The effect of the sparger modeling is investigated as well. It can be concluded that:(1)the approximate modeling method for the sparger in this work is capable of reasonably predicting the radial gas holdup profile;(2)the CFD simulation with the Tomiyama's drag model differs little from the Ishii-Zuber drag model at the low superficial velocity, while at the high gas velocity, the former leads to an over-prediction of the gas hold-up profile;(3)the correction factor of drag coefficient has a larger influence on the radial gas holdup profiles for high superficial gas velocity than low velocity |
其他语种文摘
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A transient two-phase and three-dimensional computational fluid dynamics(CFD)simulation within the Eulerian framework has been carried out to investigate the influence of drag models on the radial gas hold-up profile of a bubble column. The effect of the sparger modeling is investigated as well. It can be concluded that:(1)the approximate modeling method for the sparger in this work is capable of reasonably predicting the radial gas holdup profile;(2)the CFD simulation with the Tomiyama's drag model differs little from the Ishii-Zuber drag model at the low superficial velocity, while at the high gas velocity, the former leads to an over-prediction of the gas hold-up profile;(3)the correction factor of drag coefficient has a larger influence on the radial gas holdup profiles for high superficial gas velocity than low velocity |
来源
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化工学报
,2010,61(11):2817-2822 【核心库】
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关键词
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计算流体力学
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鼓泡塔
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曳力模型
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分布板
;
气含率
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地址
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1.
西安交通大学能源与动力工程学院化学工程系, 多相复杂系统国家重点实验室, 陕西, 西安, 710049
2.
中国科学院过程工程研究所, 多相复杂系统国家重点实验室, 北京, 100190
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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0438-1157 |
学科
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化学工业 |
基金
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国家973计划
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文献收藏号
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CSCD:4063375
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14
共1页
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