Heat and mass transfer for liquid film evaporation along a vertical plate covered with a thin porous layer

Jin Sheng Leu, Jiin-Yuh Jang, Yin Chou

研究成果: Article

29 引文 斯高帕斯(Scopus)


The purpose of this work is to evaluate the heat and mass enhancement of liquid film evaporation by covering a porous layer on the plate. Liquid and gas streams are approached by two coupled laminar boundary layers incorporated with non-Darcian modes. The numerical solution is obtained by utilizing a fully implicit finite difference method and examined in detail for the effects of porosity ε, porous layer thickness δ, ambient relative humidity φ{symbol} and Lewis number Le on the average heat and mass transfer performance. It is shown that the heat and mass transfer performance may be enhanced by the presence of a porous layer. Both the average Nusselt and Sherwood numbers are increased with the decrease of ε, δ and φ{symbol}. In addition, the influence of ε on the heat and mass transfer is significantly increased as δ is increased.

頁(從 - 到)1937-1945
期刊International Journal of Heat and Mass Transfer
出版狀態Published - 2006 六月 1


All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes