自激振荡脉冲对流换热的实验研究

An Experimental Study on the Self-oscillation Impulse Convective Heat Transfer

将Helmhotz共振腔应用于换热器来增强换热是一种新的强化换热方法。本文作者通过实验研究了Helmhotz共振腔对换热器的换热强化效果,分析了各种参数对换热效果的影响,得到了对流换热系数及换热强化比随流速的变化规律,结果对工程设计及进一步的研究具有重要的指导意义。

It is a new heat transfer enhancement method to apply Helmhotz resonance chamber to convective heat transfer in a pipe.The convective heat transfer characteristics of water in a pipe with the Helmhotz resonance chamber is investigated experimentally.The influence of various parameters on heat transfer is analysed and the rules of convective heat transfer coefficient and the ratio of heat transfer enhancement with flow velocity are obtained.Results are of important guidance for engineering design and furthe investigation.