| 自掺气水流流速分布 |
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| 引用本文： | 邓军,许唯临. 自掺气水流流速分布[J]. 水动力学研究与进展(A辑), 2002, 17(3): 369-375 |
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| 作者姓名： | 邓军 许唯临 |
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| 作者单位： | 四川大学高速水力学国家重点实验室,四川成都,610065 |
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| 基金项目： | 国家自然科学基金资助项目 (5 970 90 0 4 ) |
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| 摘 要： | 本文根据前人的实验资料，建立了一套计算自掺气水流流速分布的半经验半理论方法。提出了掺气对紊动有抑制作用，从而导致近底流速指数中指数大于1／7，并使自掺气水流的最大流速比不掺气水流的最大流速有所增大。公式的计算结果与实验数据相对比，结果基本一致。
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| 关 键 词： | 水流流速分布 自掺气 紊动 自由紊流区 近壁紊流区 水气二相流 |
| 文章编号： | 1000-4874(2002)03-0369-07 |
Velocity distribution of self-aerated flows |
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| DENG Jun,XU Wei lin. Velocity distribution of self-aerated flows[J]. Chinese Journal of Hydrodynamics, 2002, 17(3): 369-375 |
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| Authors: | DENG Jun XU Wei lin |
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| Abstract: | On the basis of the existing experimental data, a method was developed to calculate the velocity profiles of self aerated flow. The viewpoint was put forward that aeration has the effect to decrease the turbulent intensity and increase velocity gradient and maximum velocity on a vertical line, which results in the power of the exponential velocity formula near bottom being greater than 1/7. The calculated velocity profiles are in good agreement with the experimental data. |
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| Keywords: | self aeration velocity profile turbulence free turbulent zone wall turbulent zone |
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