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  • 标题:Heat Flux Equation and Characteristics of Heat and Mass Transfer of Evaporating Meniscus
  • 本地全文:下载
  • 作者:Guochang Zhao ; Lei Cao ; Liping Song
  • 期刊名称:Journal of Software Engineering
  • 印刷版ISSN:1819-4311
  • 电子版ISSN:2152-0941
  • 出版年度:2015
  • 卷号:9
  • 期号:4
  • 页码:735-748
  • DOI:10.3923/jse.2015.735.748
  • 出版社:Academic Journals Inc., USA
  • 摘要:The governing equations for heat and mass transfer of evaporating meniscus are derived and solved by fourth-order Runge-Kutta method. The equation for evaporating heat flux is originally derived in thermal resistance form and it is found that the key factors that affect the heat transfer of intrinsic meniscus are surface tension and conduction thermal resistance of the liquid film; the suppressing effects of disjoining pressure and surface tension are very strong. The disjoining pressure predominates in extremely thin films while the evaporation driving effect of temperature difference between the wall and vapor is dominant in relatively thicker films. Other factors such as groove width, superheat, surface tension coefficient, latent heat of evaporation, kinetic viscosity and acceleration are analyzed as well. For acceleration, Bond number is introduced to evaluate its influence on the heat transfer of evaporating meniscus.
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