| 外加声场微小流化床中A类与C类颗粒流化的数值模拟 |
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| 引用本文： | 李志坤,曹长青. 外加声场微小流化床中A类与C类颗粒流化的数值模拟[J]. 广东化工, 2013, 0(24): 22-24 |
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| 作者姓名： | 李志坤 曹长青 |
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| 作者单位： | 青岛科技大学化工学院,山东青岛266042 |
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| 摘 要： | 文章基于多相流欧拉模型,应用计算流体动力学（CFD）软件Fluent 6.3,在有无外加声场的情况下,分别对A类与C类颗粒在微小流化床（内径10mm,床高60 mm）中的颗粒分布进行了数值模拟,得到了一系列的固含率云图.模拟结果发现,在通入气体的初始阶段,C类颗粒流化出现了活塞流现象;加上声场后,上述现象消失.无声场时A类颗粒床层有较大气泡;引入声场后气泡变小.引入声场使得C类颗粒与A类颗粒有相似的固含率云图.
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| 关 键 词： | 微小流化床 数值模拟 |
Numerical Simulation of Group A and C Particles in the Micro-scale Fluidized Bed with Acoustic Assistance |
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| Li Zhikun,Cao Changqing. Numerical Simulation of Group A and C Particles in the Micro-scale Fluidized Bed with Acoustic Assistance[J]. Guangdong Chemical Industry, 2013, 0(24): 22-24 |
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| Authors: | Li Zhikun Cao Changqing |
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| Affiliation: | (College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China) |
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| Abstract: | Based on multiphase Euler model, the numerical simulation of group A and C par/icles is carried out in the micro-scale fluidized bed （inner diameter is 10 ram, height is 60 mm） with or without acoustic assistance, by computational fluid dynamics （CFD） software Fluent 6.3. Obtained a series of contours of solid volume fraction. Simulation results show that C particles appeared the phenomenon of piston flow when the gas was passed; Above the phenomenon is disappeared with the sound field. Group A particles have a greater bubbles without acoustic assistance; Bubbles become smaller after the introduction of the sound field. Group A and C parlicles have similar contours of solid volume fraction with acoustic assistance. |
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| Keywords: | micro-scale fluidized bed： numerical simulation |
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