| 钝体后回流区涡旋结构初探 |
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| 引用本文： | 吕成道,李佛金,丘纪华,程尚模.钝体后回流区涡旋结构初探[J].华中科技大学学报(自然科学版),1996(6). |
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| 作者姓名： | 吕成道 李佛金 丘纪华 程尚模 |
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| 作者单位： | 煤燃烧国家重点实验室 |
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| 摘 要： | 首先对钝体后的涡旋结构进行了探讨，然后应用涡通量守恒定理对钝体后的涡旋度和回流区面积之间的关系作了初步分析，从瞬时和平均两种意义上对回流区面积和竖直卷吸速度沿规则等腰钝体高度方向的变化规律给出了理论解释
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| 关 键 词： | 规则等腰钝体 涡旋度 卷吸 涡旋通量 |
A Preliminary Study on the Vortex Structure of the Reflow Zone behind a Bluff Body |
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| Lu Chengdao Dept. of Power Eng.,HUST,Wuhan ,China. Li Fojin Qiu Jihua Cheng Shangmo.A Preliminary Study on the Vortex Structure of the Reflow Zone behind a Bluff Body[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1996(6). |
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| Authors: | Lu Chengdao Dept of Power Eng HUST Wuhan China Li Fojin Qiu Jihua Cheng Shangmo |
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| Institution: | Lu Chengdao Dept. of Power Eng.,HUST,Wuhan 430074,China. Li Fojin Qiu Jihua Cheng Shangmo |
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| Abstract: | The vortex structure behind a bluff body is studied and the relationship between the vorticity and the area of the reflow zone is analyzed using the Conservation Law of Vortex Flux. A theoretical explanation about the variation of the area of the reflow zone and the vertical entrainment velocity along the height of the regular isosceles bluff body is made from both the instantaneous and averaging viewpoints. |
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| Keywords: | regular isosceles bluff body vorticity entrainment vortex flux |
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