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《Journal of South China University of Technology(Natural Science Edition)》 2008-07
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Dynamic Characteristics of Phase-Change Heat Transfer in Micro Channel

Luo Xiao-ping(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China)  
In this paper,the dynamic characteristics of the phase-change heat transfer in a micro channel were investigated.Then,by introducing the discontinuous pressure and the Lie symmetry among the molecules in the gas-liquid-solid phase,a differential dynamic system describing the gas-liquid interface was proposed.Moreover,experiments were performed with a rectangular(0.6 mm×2.0 mm) micro channel to obtain the pressure-time sequence.The power spectrum analyses of the sequence indicate that the heat transfer system exhibits chaotic movement at a frequency of more than 7.39 Hz,thus revealing the relationship between the high-efficiency heat transfer properties of micro channel and the chaotic characteristics of the system.In addition,the phase graph of the singular attractor obtained via the simulation of the chaotic characteristics with the differential dynamic system accords well with the experimental results.
【Fund】: 国家自然科学基金资助项目(20676039);; 教育部留学回国人员科研启动基金资助项目(B02B7070200)
【CateGory Index】: TK124
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Chinese Journal Full-text Database 2 Hits
1 Luo Xiao-ping(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China);Investigation into Heat Soliton and Phase-Change Heat Transfer in Minichannel[J];Journal of South China University of Technology(Natural Science Edition);2008-11
2 LUO Xiao-ping,DAI Yong(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China);EHD enhancement of phase-change heat transfer in micro channels and its chaotic characteristic[J];Journal of Shenyang University of Technology;2010-04
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