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

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1937-1945
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume49
Issue number11-12
DOIs
Publication statusPublished - 2006 Jun 1

All Science Journal Classification (ASJC) codes

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

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