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《Journal of Beijing University of Aeronautics and Astronautics》 2009-03
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Single-phase forced convective heat transfer in swirl microchannels

Xi Youmin Yu Jianzu Xie Yongqi Gao Hongxia(School of Aeronautic Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)  
The experiment of heat transfer in four swirl microchannel test pieces was conducted with ethylene glycol solution of 30%(volume concentration).The test pieces' cross section was rectangular with width 0.3mm and different depth.Constant heat flux was adopted as heating manner.Each test piece was made of copper and contained six microchannels.The heat transfer characteristic of swirl microchannel under the different liquid flux and the heating power was investigated.The influence of microchannel structure and liquid velocity was analyzed.Heat transfer experimental formula was obatined.Heat transfer characteristic was compared with straight microchannel.The result shows that heat transfer performance of swirl microchannel is better than straight microchannel.
【Fund】: 国家自然科学基金资助项目(50676007)
【CateGory Index】: TK124
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