| 碰撞剪切流动中波速对自激振荡射流频率的影响 |
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| 引用本文： | 杨林,李晓红,王建生,卢义玉.碰撞剪切流动中波速对自激振荡射流频率的影响[J].中国安全科学学报,2000,10(6):46-50. |
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| 作者姓名： | 杨林 李晓红 王建生 卢义玉 |
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| 作者单位： | 重庆大学机械工程学院 |
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| 基金项目： | 国家杰出青年基金项目! (5 972 5 410 )，中国博士后科学基金项目 |
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| 摘 要： | 在许多工程应用中都需了解流体的自激振荡特性 ,而其振荡频率与压力波传播速度密切相关。笔者从理论上分析了自激振荡射流中碰撞剪切流动压力扰动波的传播速度及其对射流振荡频率的影响规律 ,结果表明 :波速随着流体中气体含量的增加而急剧减小 ,随压力的增大而增大。波速减小使得射流的振荡频率也减小 ,实验结果与理论分析一致
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| 关 键 词： | 自激振荡 振荡射流 剪切流 波速 振荡频率 |
Effects of Wave Speeds in Impinging Shear Flow on Frequencies of the Self-Excited Oscillation Pulsed Water Jets |
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| Yang Lin,Li Xiaohong,Wang Jiansheng,Lu Yiyu.Effects of Wave Speeds in Impinging Shear Flow on Frequencies of the Self-Excited Oscillation Pulsed Water Jets[J].China Safety Science Journal,2000,10(6):46-50. |
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| Authors: | Yang Lin Li Xiaohong Wang Jiansheng Lu Yiyu |
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| Abstract: | In many engineering, it is necessary to know the characteristics of self excited oscillation in fluids, which is directly determined by the wave speed. So the wave speed in the impinging shear flow and its effect on frequencies of the self-excited oscillation pulsed water jet are analyzed in the paper. The numerical results, coinciding with the tests, clearly show that the oscillation frequencies decreased with wave speeds,and the wave speed decrease obviously with air in fluid and increase with the pressure increase. These conclusions are applicable in the design of the jet nozzle. |
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| Keywords: | Self excited oscillation Oscillating jet Shear flow Wave speed Oscillating frequency |
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