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微细通道相变传热的动力学特性 被引量：2

Dynamic Characteristics of Phase-Change Heat Transfer in Micro Channel
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摘要 研究了微细通道相变传热的动力学特性,通过引入气-液-固三相分子间产生的不连续压力及Lie对称性,获得了描述气-液接触界面的微分动力系统,并对0.6mm×2.0mm的矩形微槽进行了实验,获得了压力时间序列.对该序列的功率谱分析表明,在7.39Hz以上的频段,系统出现了混沌,表明微通道的高效传热性能与系统的混沌特征有一定的关系.利用所得微分动力系统对实验中的混沌特征进行了模拟,获得了奇异吸引子相图,所得结论与实验结果一致. 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 gasliquid-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.
作者 罗小平
机构地区 华南理工大学机械与汽车工程学院
出处 《华南理工大学学报（自然科学版）》 EI CAS CSCD 北大核心 2008年第7期16-20,共5页 Journal of South China University of Technology(Natural Science Edition)
基金 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)
关键词 微细通道 相变传热 动力学特性 同宿轨 混沌 LIE对称性 micro channel phase-change heat transfer dynamic characteristic homoclinic orbit Chaos Lie symmetry
分类号 TK124 [动力工程及工程热物理—工程热物理]
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参考文献9

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同被引文献19

  • 1李瑞阳,陈赉宝,陈之航,袁益超.EHD强化传热机理分析[J].华东工业大学学报,1996,18(4):5-12. 被引量：22
  • 2谢菲,丁艳军,吴占松.气固两相流差压时间序列的混沌研究[J].热力发电,2007,36(3):10-12. 被引量：1
  • 3Lazarek G M, Blacksh. Evaporative heat transfer, pressure drop and critical heat flux in a small vertical tube with R- 113 [ J ]. International Journal of Heat and Mass Transfer, 1982,25 ( 7 ) : 945-960.
  • 4Bao Z Y, Fletcher D F. Flow boiling heat transfer of freon Rll and HCFC123 in narrow passages [J]. International Journal of Heat and Mass Transfer,2000,43 ( 18 ) :3347- 3358.
  • 5Kew P A, Cornwell K. Correlations for the prediction of boiling heat transfer in small-diameter channels [ J ]. Applied Thermal Engineering, 1997,17 ( 8 ) :705-715.
  • 6Lin S, Kew P A, Cornwell K. Two-phase heat transfer to a refrigerant in a 1 mm diameter tube [ J ]. International Journal of Refrigeration ,2001,24( 1 ) :51-56.
  • 7Kenning D B R, Wen D S. Confined growth of a vapour bubble in a capillary tube at initially uniform superheat: experiments and modeling [ J ]. International Journal of Heat and Mass Transfer,2006,49(23) :4653-4671.
  • 8Kenning D B R, Yan Y. Saturated flow boiling of water in a narrow channel:experimental investigation of local phenomena [J]. Transactions of the Institution of Chemical Engineers ,2001,79 (4) :425-436.
  • 9Tran T N,Wambsganss M W,France D M. Small circular and rectangular channel boiling with two refrigerants [ J]. International Journal of Multiphase Flow, 1996,22 ( 3 ) : 485 -498.
  • 10Sumith B, Kaminaga F, Matsumura K. Saturated flow boiling of water in a vertical small diameter tube [ J ]. Experimental Thermal and Fluid Science, 2003,27 ( 7 ) : 789- 801.

引证文献2

二级引证文献3

华南理工大学学报（自然科学版）
2008年 第7期

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