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Etude numérique de l'amélioration des procédés d'absorption en utilisant des agents tensioactifs.

Numerical study of the enhancement produced in absorption processes using surfactants.

Auteurs : CASTRO J., LEAL L., PÉREZ-SEGARRA C. D., et al.

Type d'article : Article

Résumé

A model that considers the Navier-Stokes equations is used to study the influence of surfactants, substances that improve heat and mass transfer in absorption machines due to Marangoni effect. For solving the free surface location a surface tracking method is used, and for the calculation of surface tension forces, a continuum surface forces model is employed. The coupled equations are solved using the SIMPLEC procedure. Two common surfactants for LiBr aqueous solutions, 1-octanol and 2-ethyl-1-hexanol, are numerically tested and the absorption enhancement produced in a stagnant pool is compared with other researchers' results. For falling film absorption some other results are showed.

Détails

  • Titre original : Numerical study of the enhancement produced in absorption processes using surfactants.
  • Identifiant de la fiche : 2005-0083
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 14-16
  • Date d'édition : 07/2004

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