| 涡流空气分级机内三维流场的数值模拟与测量 |
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| 引用本文： | 杨庆良,刘家祥.涡流空气分级机内三维流场的数值模拟与测量[J].化学工程,2009,37(1). |
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| 作者姓名： | 杨庆良 刘家祥 |
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| 作者单位： | 北京化工大学,材料科学与工程学院,化工资源有效利用国家重点实验室,北京,100029 |
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| 摘 要： | 为了清楚地认识涡流空气分级机内部流场分布,文中利用Fluent软件建立分级机的三维模型,对其内部三维旋转流场进行了数值模拟计算,得出不同工况下分级机内部流场分布。采用激光多普勒测速仪(LDV)对转笼叶片间流场进行测量,应用测量结果来验证模拟计算结果,模拟结果与测量结果吻合。研究表明,在一定的进口风速下,当环形区靠近叶片处气流切向速度与转笼外缘切向速度相近时,存在一个临界转速使得叶片间流场最稳定,分级机分级效果最好。这为改进涡流空气分级机操作提供了理论指导。
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| 关 键 词： | 涡流空气分级机 数值模拟 流场测量 临界转速 |
Numerical simulation and measurement of three-dimensional flow field in turbo air classifier |
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| YANG Qing-liang,LIU Jia-xiang.Numerical simulation and measurement of three-dimensional flow field in turbo air classifier[J].Chemical Engineering,2009,37(1). |
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| Authors: | YANG Qing-liang LIU Jia-xiang |
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| Affiliation: | State Key Laboratory of Chemical Resource Engineering;College of Materials Science and Engineering;Beijing University of Chemical Technology;Beijing 100029;China |
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| Abstract: | For clear cognition of the flow field distribution in a turbo air classifier,a 3-D model of the classifier was established by Fluent,the numerical simulation of the 3-D rotational flow field in the classifier was carried out,and the flow field distribution in classifier under different work conditions were gained.The measurements of the flow field between blades of the rotor cage were performed by laser Doppler velocimeter(LDV).The results of measurement were used to validate the results of simulation and t... |
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| Keywords: | turbo air classifier numerical simulation flow field measurements critical rotate speed |
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