| Helmholtz共振腔的设计及其脉动流体强化换热效果的试验分析 |
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| 引用本文： | 高虹,刘娟芳.Helmholtz共振腔的设计及其脉动流体强化换热效果的试验分析[J].能源技术(上海),2009,30(3):141-144. |
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| 作者姓名： | 高虹 刘娟芳 |
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| 作者单位： | 重庆大学动力工程学院,重庆,400044
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| 基金项目： | 重庆市自然科学基金计划项目 |
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| 摘 要： | 采用试验的方法分析了流体力学不稳定性对强化换热的影响。试验中，水流经Helmholtz共振腔被转变为脉动流体，脉动的水流经单管换热器被加热，试验测量了不同条件下加装共振腔和不加共振腔时的换热系数，结果发现加装Helmholtz共振腔后换热管的换热系数可以提高10％～40％。
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| 关 键 词： | Helmoholtz共振腔 强化换热 自激振荡 |
Experimental Analysis of Heat Transfer Enhancement by Using Helmholtz Oscillator |
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| GAO Hong,LIU Juan-fang.Experimental Analysis of Heat Transfer Enhancement by Using Helmholtz Oscillator[J].Energy Technology,2009,30(3):141-144. |
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| Authors: | GAO Hong LIU Juan-fang |
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| Affiliation: | College of Power Engeering;Chongqing University;Chongqing 400044;China |
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| Abstract: | The present paper is devoted to the investigation of the influence of fluid dynamic instability on heat transfer enhancement.Experiment was performed to test the effect.A self-oscillator was designed by which the continuous flow of the fluid was successfully transferred into pulsating flow.The performance of the oscillator was systematically examined.The pulsating flowing water passes through a single pipe heated electrically.The heat transfer coefficients were measured under different conditions.A remarkab... |
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| Keywords: | helmoholtz oscillator enhancement of heat transfer self-excited oscillation |
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