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Effect of feed spacer mesh length ratio on unsteady hydrodynamics in 2D spiral wound membrane (SWM) channel / K. K. Lau in Industrial & engineering chemistry research, Vol. 49 N° 12 (Juin 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 12 (Juin 2010) . - pp. 5834–5845 Titre : Effect of feed spacer mesh length ratio on unsteady hydrodynamics in 2D spiral wound membrane (SWM) channel Type de document : texte imprimé Auteurs : K. K. Lau, Auteur ; M. Z. Abu Bakar, Auteur ; A. L. Ahmad, Auteur Année de publication : 2010 Article en page(s) : pp. 5834–5845 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Ladder-type  spacer  mesh  length  ratio  Spiral  wound  membranes  Computational  fluid  dynamics  approach Résumé : The present work involves the simulation and optimization of the ladder-type spacer mesh length (ML) ratio in spiral wound membranes (SWMs), using a two-dimensional (2D) integrated computational fluid dynamics (CFD) approach. The permeation properties, incorporated with a transient unsteady hydrodynamics modeling approach, were used to analyze and optimize the ML value for SWM feed spacers. The influence of unsteady hydrodynamics on the development of the concentration polarization in the membrane channel was also investigated. The optimum ML ratio was determined to be 3, because of its ability to generate a high intensity of unsteady hydrodynamics with the lowest effective concentration polarization factor and the results were further validated using velocity vector plots, wall shear stress analysis, and the localized concentration polarization factor. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9017989 [article] Effect of feed spacer mesh length ratio on unsteady hydrodynamics in 2D spiral wound membrane (SWM) channel [texte imprimé] / K. K. Lau, Auteur ; M. Z. Abu Bakar, Auteur ; A. L. Ahmad, Auteur . - 2010 . - pp. 5834–5845. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 12 (Juin 2010) . - pp. 5834–5845 Mots-clés : Ladder-type  spacer  mesh  length  ratio  Spiral  wound  membranes  Computational  fluid  dynamics  approach Résumé : The present work involves the simulation and optimization of the ladder-type spacer mesh length (ML) ratio in spiral wound membranes (SWMs), using a two-dimensional (2D) integrated computational fluid dynamics (CFD) approach. The permeation properties, incorporated with a transient unsteady hydrodynamics modeling approach, were used to analyze and optimize the ML value for SWM feed spacers. The influence of unsteady hydrodynamics on the development of the concentration polarization in the membrane channel was also investigated. The optimum ML ratio was determined to be 3, because of its ability to generate a high intensity of unsteady hydrodynamics with the lowest effective concentration polarization factor and the results were further validated using velocity vector plots, wall shear stress analysis, and the localized concentration polarization factor. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9017989