超声和射流作用下泡沫金属流动液膜传热分析  

Heat transfer analysis of foam metal flowing liquid film under ultrasound and jet impingement

作　　者：刘燚 陈威[2] 庄炜杰 邬昕 胡馨丹 邹冰妍 Liu Yi;Chen Wei;Zhuang Weijie;Wu Xin;Hu Xindan;Zou Bingyan(Shanghai Institute of Measurement and Testing Technology;Shanghai Maritime University)

机构地区：[1]上海市计量测试技术研究院 [2]上海海事大学

出　　处：《上海计量测试》2022年第3期2-6,共5页Shanghai Measurement and Testing

基　　金：上海市自然科学基金(19ZR1422400)。

摘　　要：在超声波和射流冲击作用下的流动液膜覆盖泡沫金属以降低受热面的温度,达到冷却的目的。通过实验,对超声波作用下的不同液膜厚度和液膜流速以及空气射流速度对流动液膜传热性能的影响进行了研究。实验结果表明,在超声波作用下,空气射流速度以及液膜流速越大,液膜厚度越薄,壁面的散热效果越好。此外,与无超声波的情况相比,获得了超声波作用下传热系数的上升速率。基于实验结果,得到了超声波与泡沫金属以及射流冲击作用的耦合可强化传热、降低壁温的结论。该研究对今后工作具有指导意义。Under the action of ultrasound and jet impingement,the flowing liquid film covers the foam metal to reduce the temperature of the heating surface and achieve the purpose of cooling.This paper mainly studies the effects of different liquid film thickness,liquid film velocity and air jet velocity on the heat transfer performance of flowing liquid film under the action of ultrasonic wave.The experimental results show that under the action of ultrasonic,the greater the air jet velocity and liquid film velocity,the thinner the liquid film thickness,and the better the wall cooling effect.In addition,compared with the case without ultrasonic,the rising rate of heat transfer coefficient under ultrasonic is obtained.Based on the experimental results,it is concluded that the coupling of ultrasonic and foam metal and jet impingement can enhance heat transfer and reduce wall temperature.The research of this paper provides guiding significance for the research of future work.

关 键 词：超声波 射流冲击 泡沫金属 液膜 传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TG663[动力工程及工程热物理—热能工程]