| 喷动床内气固两相流体动力行为的数值模拟 |
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| 引用本文： | 何玉荣,陆慧林,刘文铁,赵云华,王强.喷动床内气固两相流体动力行为的数值模拟[J].化工学报,2004,55(2):290-296. |
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| 作者姓名： | 何玉荣 陆慧林 刘文铁 赵云华 王强 |
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| 作者单位： | 哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001;哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001;哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001;哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001;哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金资助项目 (No 5 0 3 760 13 )~~ |
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| 摘 要： | 引 言喷动床被广泛应用于不同工业领域中 ,如石油裂解反应 -再生器、煤和农业废弃物气化和燃烧 ,喷动床还被应用于粮食和药品的干燥等1] .因此 ,喷动床设计应满足不同应用的要求 .喷动床内气相反应物的反应时间和停留时间依赖于床体几何结构和运行参数 .尽管已有许多的实验对喷动床内气固两相流动进行了研究 ,得到了喷射区、环形区和喷泉区内的气固两相流动流体动力特性 ,然而由于喷动床内气固两相流动的复杂性 ,人们对床体几何结构和运行参数对喷动床动力学的影响至今并不清楚 .因此 ,床体几何结构和运行参数等对喷动床动力学的影响成为…
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| 关 键 词： | 气固喷动床 气固两相双流体模型 数值模拟 |
| 文章编号： | 0438-1157(2004)02-0290-07 |
| 收稿时间： | 2002-11-8 |
| 修稿时间： | 2003-3-12
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NUMERICAL SIMULATION OF HYDRODYNAMIC BEHAVIOR IN SPOUTED BEDS |
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| HE Yurong,LU Huilin,LIU Wentie,ZHAO Yunhua,WANG Qiang.NUMERICAL SIMULATION OF HYDRODYNAMIC BEHAVIOR IN SPOUTED BEDS[J].Journal of Chemical Industry and Engineering(China),2004,55(2):290-296. |
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| Authors: | HE Yurong LU Huilin LIU Wentie ZHAO Yunhua WANG Qiang |
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| Abstract: | The gas-solids flow behavior was predicted by means of a hydrodynamic model of dense gas-solid flow in spouted beds. Constitutive equations describing the particle interactions and friction of particles and viscosity were incorporated into a hydrodynamic simulation computer program. The effect of operating conditions (inverted cone inclination and gas spouting velocity) on particle velocity and concentration in the three zones of spouted beds: spout, annulus and fountain were numerically studied. Both vertical and horizontal particle velocities increased with increasing spouting gas velocity in the spouted region. The diameter of the spout increases with decreasing inclination. As inclination is greater than 60°, there is a neck near the jet. |
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| Keywords: | gas-solid spouted bed multiphase fluid model numerical simulation |
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