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Investigation of the fouling layer growth and distribution at the interface of pressure-driven membranes / Mohamed Bentrcia 

Public ISBD Titre : Investigation of the fouling layer growth and distribution at the interface of pressure-driven membranes Type de document : texte imprimé Auteurs : Mohamed Bentrcia, Auteur ; R. Drew, Directeur de thèse Editeur : Rensselaer Polytechnic Institute Année de publication : 1985 Importance : 156 f. Présentation : ill. Format : 27 cm. Note générale : Thèse de Doctorat : Mechanical Engineering : New York, Rensselaer Polytechnic Institute Troy : 1985 Bibliogr. f. 157 - 161 . Annexe f. 162 - 250 Langues : Anglais (eng) Mots-clés : Pressure-driven  membranes Fouling  layer  flow Fluid  flow  solution Numerical  solution Index. décimale : D005185 Résumé : An investigation of the growth and the distribution of the fouling layer at the interface of pressure-driven membranes is presented. Also, its effect on the flow variables is studied. A model of the flow in the channel, the fouling layer and the membrane skin is developed. Then, the equations governing the flow and the rate of change for the fouling layer thickness are non-dimensionalized. Consequently, two parameters characterizing the effects of the inertia terms and the fouling layer are obtained. The undisturbed solution (Rew = 0, S = 0) is first found, then the first-order perturbation problems for both Rew << 1 and S << 1, are solved. It is found that for relatively large values of E (which correspond to the ultrafiltration regime with moderate values of ΔP across the porous media; the pressure, the suction velocity, and the fouling layer thickness decay exponentially along the channel and the present solution can not be approximated by similarity solutions. Whereas for small values of E (which correspond to some range of the hyperfiltration regime) the pressure, suction velocity and the fouling layer thickness decrease linearly along the X-axis and the solution is in good agreement with the similarity solutions. Also, it is noticed Investigation of the fouling layer growth and distribution at the interface of pressure-driven membranes [texte imprimé] / Mohamed Bentrcia, Auteur ; R. Drew, Directeur de thèse . - Troy, New York, USA : Rensselaer Polytechnic Institute, 1985 . - 156 f. : ill. ; 27 cm. Thèse de Doctorat : Mechanical Engineering : New York, Rensselaer Polytechnic Institute Troy : 1985 Bibliogr. f. 157 - 161 . Annexe f. 162 - 250 Langues : Anglais (eng) Mots-clés : Pressure-driven  membranes Fouling  layer  flow Fluid  flow  solution Numerical  solution Index. décimale : D005185 Résumé : An investigation of the growth and the distribution of the fouling layer at the interface of pressure-driven membranes is presented. Also, its effect on the flow variables is studied. A model of the flow in the channel, the fouling layer and the membrane skin is developed. Then, the equations governing the flow and the rate of change for the fouling layer thickness are non-dimensionalized. Consequently, two parameters characterizing the effects of the inertia terms and the fouling layer are obtained. The undisturbed solution (Rew = 0, S = 0) is first found, then the first-order perturbation problems for both Rew << 1 and S << 1, are solved. It is found that for relatively large values of E (which correspond to the ultrafiltration regime with moderate values of ΔP across the porous media; the pressure, the suction velocity, and the fouling layer thickness decay exponentially along the channel and the present solution can not be approximated by similarity solutions. Whereas for small values of E (which correspond to some range of the hyperfiltration regime) the pressure, suction velocity and the fouling layer thickness decrease linearly along the X-axis and the solution is in good agreement with the similarity solutions. Also, it is noticed

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