Instability analysis of Marangoni convection for absorption process accompanied by heat transfer

Jake Kim, Chang Kyun Choi, Yong Tae Kang

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The objective of this paper is to analyze the onset of Marangoni convection for absorption process accompanied by heat transfer using propagation theory. Ammonia-water is used as a representative solution pair for the absorption process and 2-ethyl-1-hexonal is considered an additive. The re-modified solutal Marangoni number MBs is linearly related to the modified solutal Biot number Bs*. Rearranging this relation, a useful correlation of the solutal Marangoni number Ms with respect to the solutal Biot number Bs is obtained in a linear form. It is found that there is a critical Bs causing the most unstable state of fluid layer. The critical time τc to mark the onset of Marangoni convection can be predicted using the correlation developed in the present study. The results from the present study will provide a guideline to enhance heat and mass transfer performance during the absorption process.

Original languageEnglish
Pages (from-to)2395-2402
Number of pages8
JournalInternational Journal of Heat and Mass Transfer
Volume47
Issue number10-11
DOIs
Publication statusPublished - 2004 May 1
Externally publishedYes

Keywords

  • Absorption
  • Additive
  • Heat transfer
  • Marangoni convection
  • Propagation theory

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy(all)
  • Mechanical Engineering

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