脉动热管实验与理论研究进展

脉动热管(PHP/OHP)是一种新型的高效传热元件,在航天领域、电子器件冷却以及节能技术方面极具应用潜力。这里首先介绍了脉动热管的特点和工作原理,然后分别从实验研究、理论研究和实际应用等方面介绍了目前该领域的研究现状。实验研究方面着重介绍了流动可视化应用以及纳米流体和功能流体通过强化换热提高脉动热管性能等相关研究热点。同时指出,目前脉动热管的理论分析受限于两相流理论的发展,主要研究重点在于非线性分析;数值模拟方面,特别是同纳米流体以及功能流体应用相结合将会成为下一个研究热点。

Development of Experimental and Theoretical Study on Pulsating Heat Pipe

Pulsating heat pipe (PHP), which is also called oscillating heat pipe (OHP), is a novel type of highly efficient heat transfer component. It is widely applied in many fields, including aerospace technology, cooling of electronic devices and energy-saving technology, etc. In the present paper, the characteristics and working principles of PHPs are first introduced, and then the current research in the field is described from experimental study, theoretical study and practical application achievements. The experimental investigations are mainly focused on the flow visualization and the applications of nano-fluids and other functional fluids to enhance heat transfer performance of the PHPs. It is also pointed out that the current theoretical analyses of the PHP are restricted by further development of two-phase flow theory, and are concentrated in the non-linear analysis. Numerical simulations will become another research focus, especially the combination of the nano-fluids and functional fluids.