| 涡流空气分级机内流场分析与转笼结构改进 |
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| 引用本文： | 杨庆良,刘家祥.涡流空气分级机内流场分析与转笼结构改进[J].化学工程,2010,38(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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| 基金项目： | 国家自然科学基金资助项目(50474035) |
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| 摘 要： | 应用F luent软件建立传统涡流空气分级机三维模型并对其内部流场进行数值模拟,同时采用激光多普勒测速仪对分级机内流场进行测量。研究表明:当进口风速一定时,存在一个临界转笼转速使得环形区及转笼叶片间流场分布最均匀,分级性能好。改进转笼结构并进行模拟分析,新结构转笼的叶片设计成流线型,减少了气流与叶片的碰撞。模拟结果表明:与传统涡流空气分级机相比,环形区内速度分布得到了改善,新结构转笼叶片间旋涡趋势减弱,分级机内分级力场优于传统转笼。特别是转笼高速旋转时,结构改进效果更加显著。
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| 关 键 词： | 涡流空气分级机 流场特性 数值模拟 流场测量 新结构转笼 |
Analysis of flow field in turbo air classifier and improvement of rotor cage structure |
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| YANG Qing-liang,LIU Jia-xiang.Analysis of flow field in turbo air classifier and improvement of rotor cage structure[J].Chemical Engineering,2010,38(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: | A three-dimensional model of turbo air classifier was established and its interior flow field was simulated by the software of Fluent.The flow field in between the blades of rotor cage was measured by laser Doppler velocimeter(LDV).The result indicates that when the inlet velocity settles,there must be a critical rotary speed to make the flow field in the annular region and in between the blades be symmetrical,resulting in an excellent classification performance.On the basis of improvement on the structure ... |
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| Keywords: | turbo air classifier flow field characteristics numerical simulation flow field measurements new-structure rotor cage |
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