Enhanced boiling in microchannels due to recirculation induced by repeated saw-toothed cross-sectional geometry

被引：15
作者：
Gao, Le [1 ]
Bhavnani, Sushil H. [1 ]
机构：
[1] Auburn Univ, Dept Mech Engn, Auburn, AL 36849 USA
来源：
APPLIED PHYSICS LETTERS | 2017年 / 111卷 / 18期
关键词：
BACKWARD-FACING STEP; HEAT-TRANSFER; PARALLEL MICROCHANNELS; NUMERICAL-SIMULATION; DIELECTRIC FLUID; PRESSURE-DROP; FLOW; NANOFLUIDS; CONVECTION; NANOWIRES;
D O I：
10.1063/1.4995980
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A saw-toothed shaped microchannel heat sink is investigated for enhancing flow boiling heat transfer. Tests are conducted at mass fluxes of 444-1776 kg/m(2) s and an inlet subcooling of 15 degrees C. The effects of channel geometry on boiling curves, flow patterns, pressure drops, and heat transfer coefficient are discussed in this letter. It is found that heat transfer performance is enhanced by up to 50% especially at heat flux levels associated with the current generation of microprocessors. Published by AIP Publishing.
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页数：5
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