SGER: Effects of a Porous Boundary on Convective Condensation in Small Diameter/Micro-Channels

本提案旨在资助微通道内两相流换热的创新性探索性研究。微通道在涉及高热流密度的电子冷却和微型热交换器中有应用。新的想法是采用多孔边界作为灯芯，以协助去除冷凝水。在涉及较大通道的多孔介质中，关于热和流体流动的现有知识并不适用，因为作用在流体上的力不与物理尺寸成线性比例。项目负责人拟通过实验研究冷凝两相流动的物理特性，确定多孔边界对传热的影响。

ABSTRACT This proposal is to fund innovative exploratory research on two-phase flow heat transfer in microchannels. Microchannels have applications in electronics cooling and miniature heat exchangers involving high heat fluxes. The new idea is to employ a porous boundary to act as a wick to assist in the removal of condensate. Existing knowledge about heat and fluid flow in porous media involving larger channels does not applied because the forces acting on the fluid do not scale linearly with the physical dimensions. The Principal Investigator proposes to conduct experiments to study the physics of condensing two-phase flow behavior and determine the effects of the porous boundary on heat transfer.