| 轴对称空泡流的脉动性态研究 |
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| 引用本文： | 刘桦,何友声.轴对称空泡流的脉动性态研究[J].上海力学,1997,18(2):99-105. |
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| 作者姓名： | 刘桦 何友声 |
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| 作者单位： | 上海交通大学，上海交通大学，上海交通大学 上海 200030，上海 200030，上海 200030 |
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| 摘 要： | 本文采用高速摄影技术对定常来流中１／４平头轴对称体的不稳定的空泡形态特征进行了水洞试验研究。试验结果揭示了由于空泡形态断裂而产生的低频脉动现象，这一现象在跨空泡流情况下尤为明显，常使空泡长度和厚度在大幅范围内拟周期地变动，其频率特性比较稳定，有别于空泡末端局部泡团脱落而产生的脉动。
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| 关 键 词： | 轴对称体 空泡流 脉动 高速摄影 水动力学 |
A STUDY ON PULSATION OF AXISYMMETRIC CAVITATING FLOWS |
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| Liu Hua He You-sheng Zhao Gang.A STUDY ON PULSATION OF AXISYMMETRIC CAVITATING FLOWS[J].Chinese Quarterly Mechanics,1997,18(2):99-105. |
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| Authors: | Liu Hua He You-sheng Zhao Gang |
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| Abstract: | The unsteady behavior of an axisymmetric cavitation tunnel by using the technique of highspeed photograph. From the high-speed photographic records, it shows that there is a low frequent pulsating phenomenon caused by the abrupt breakup of the cavity. This pulsation of cavitating flow appears significantly in case of the trans-cavitating flow and results in the pseudo-periodic evolution of cavity length and cavity thickness. The frequency characteristics of the low-frequent pubation seems to be stable and is different from the pulsation caused by the local breakup of the cavity at its tail zone. |
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| Keywords: | axisymmetric body cavitating flow pulsation high-speed photography |
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