| 拟序结构下空泡近壁区运动规律研究 |
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| 引用本文： | 储训,牛权.拟序结构下空泡近壁区运动规律研究[J].水科学进展,2004,15(3):291-295. |
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| 作者姓名： | 储训 牛权 |
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| 作者单位： | 1.扬州大学水利科学与工程学院, 江苏扬州, 225009; |
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| 摘 要： | 从湍流的近壁拟序结构对近壁区小粒径空泡的运动规律的影响出发,对空泡产生的机理做了新的探讨。从理论上推导出基于典型湍流边界层模式的非拟序结构下空泡的近壁区运动方程,并导出基于湍流近壁拟序结构作用的空泡近壁区运动方程。两种不同条件下的运动方程比较表明,湍流近壁区的拟序结构对空泡的产生具有决定性的意义,正是由于拟序猝发作用的存在,才使得空泡对壁面的空蚀作用得以发生。
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| 关 键 词： | 拟序结构 空泡 湍流 近壁区 运动规律 |
| 文章编号： | 1001-6791(2004)03-0291-05 |
| 收稿时间： | 2003-03-03 |
| 修稿时间： | 2003年3月3日 |
Research on movement rules of spherical bubble near wall under turbulent coherent structure |
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| CHU Xun,NIU Quan.Research on movement rules of spherical bubble near wall under turbulent coherent structure[J].Advances in Water Science,2004,15(3):291-295. |
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| Authors: | CHU Xun NIU Quan |
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| Affiliation: | 1.College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China;2.Anhui Civil Engineering College, Hefei 230000, China |
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| Abstract: | Starting with the influence on the movement rules of small cavities,the mechanisms of emerging a single spherical bubble are study from the aspect of the turbulent coherent structure near the wall. A dynamic equation is established for the bubble and single spherical sand under the non-turbulent coherent structure near the wall, and then under the turbulent coherent structure near the wall. Through comparison, it can be seen that the turbulent coherent structure near the wall influences directly the cavitation of the bubble. |
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| Keywords: | coherent structure spherical bubble turbulent near wall movement rules |
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