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Analyse de l'instabilité de la convection de Marangoni pour le processus d'absorption accompagné d'un transfert de chaleur.

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

Auteurs : KIM J., CHOI C. K., KANG Y. T.

Type d'article : Article

Résumé

The objective of this article 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 Tc 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.

Détails

  • Titre original : Instability analysis of Marangoni convection for absorption process accompanied by heat transfer.
  • Identifiant de la fiche : 2004-2705
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 10-11
  • Date d'édition : 05/2004

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