声空化外场对振荡流热管传热性能的影响

THE HEAT TRANSFER CHARACTERISTICS OF OSCILLATING-FLOW HEAT PIPE BY EXTERNAL ACOUSTIC CAVITATION FIELD

本文通过实验研究了声空化外场对振荡流热管传热性能的影响规律。声空化外场对振荡流热管传热性能有显著影响,在某些工况下声空化外场可以加速热管的启动,提高热管传热性能,但亦出现施加声空化外场反而削弱传热的现象。声空化外场对振荡流热管具有独特的作用,其特殊的规律,以及内、外场之间的耦合机制亟需进行更加深入的研究。

In this paper, a series of experiments were performed to investigate the influences of external acoustic cavitation field imposed on the oscillating-heat pipe. Experimental results showed that the heat transfer of oscillating-flow heat pipe was distinctly affected by the external field. In some cases, it accelerated the heat pipe startup, as well as improved its heat transfer performance. However, the heat transfer retarded by the external field was also observed. The particular influences of the acoustic cavitation field imposed on the oscillating-flow heat pipe need to be studied thoroughly.