Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module

Membrane separation processes have added a new dimension to the traditional processes. The recent novel development in membrane processes have made it possible to use various different purposes at economical rates with additional flexibility and improved efficiencies. Regarding the membrane separati...

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Yazar:	Hussain, Sharmina
Materyal Türü:	Makale
Dil:	English
Baskı/Yayın Bilgisi:	BRAC University 2010
Konular:	Concentration polarization Spacer Reynolds number Hydraulic diameter Shear stress
Online Erişim:	http://hdl.handle.net/10361/405

id	10361-405
record_format	dspace
spelling	10361-4052019-09-29T05:47:11Z Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module Hussain, Sharmina Concentration polarization Spacer Reynolds number Hydraulic diameter Shear stress Membrane separation processes have added a new dimension to the traditional processes. The recent novel development in membrane processes have made it possible to use various different purposes at economical rates with additional flexibility and improved efficiencies. Regarding the membrane separation processes, concentration polarization is one of the biggest problems. It causes reduction of permeate flux and deterioration of permeate quality. Accumulation of rejected species can be suppressed by creating back mixing from the membrane to the bulk of the liquid. Various hydrodynamic approaches have been developed for that purpose. Feed spacers can provide higher shear rates at the membrane surface, which, promote the mixing between the bulk of the fluid and the fluid element adjacent to the membrane surface. As a result concentration polarization and membrane fouling can be reduced. The present work is devoted to investigate the hydrodynamics in two dimensional single spacer filled channels. Two different configurations of the cylindrical spacers are investigated with different channel Reynolds number. Different size and shape of formation of recirculation region, upstream and downstream of the spacers are closely observed. This recirculation region has an important role in enhancing the mass transfer in the reattachment region. 2010-10-10T05:28:39Z 2010-10-10T05:28:39Z 2008 Article http://hdl.handle.net/10361/405 en BRAC University Journal, BRAC University;Vol.5, No.1,pp. 1-8 application/pdf BRAC University
institution	Brac University
collection	Institutional Repository
language	English
topic	Concentration polarization Spacer Reynolds number Hydraulic diameter Shear stress
spellingShingle	Concentration polarization Spacer Reynolds number Hydraulic diameter Shear stress Hussain, Sharmina Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module
description	Membrane separation processes have added a new dimension to the traditional processes. The recent novel development in membrane processes have made it possible to use various different purposes at economical rates with additional flexibility and improved efficiencies. Regarding the membrane separation processes, concentration polarization is one of the biggest problems. It causes reduction of permeate flux and deterioration of permeate quality. Accumulation of rejected species can be suppressed by creating back mixing from the membrane to the bulk of the liquid. Various hydrodynamic approaches have been developed for that purpose. Feed spacers can provide higher shear rates at the membrane surface, which, promote the mixing between the bulk of the fluid and the fluid element adjacent to the membrane surface. As a result concentration polarization and membrane fouling can be reduced. The present work is devoted to investigate the hydrodynamics in two dimensional single spacer filled channels. Two different configurations of the cylindrical spacers are investigated with different channel Reynolds number. Different size and shape of formation of recirculation region, upstream and downstream of the spacers are closely observed. This recirculation region has an important role in enhancing the mass transfer in the reattachment region.
format	Article
author	Hussain, Sharmina
author_facet	Hussain, Sharmina
author_sort	Hussain, Sharmina
title	Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module
title_short	Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module
title_full	Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module
title_fullStr	Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module
title_full_unstemmed	Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module
title_sort	computational fluid dynamics study of flow behaviour in a single spacer filled membrane module
publisher	BRAC University
publishDate	2010
url	http://hdl.handle.net/10361/405
work_keys_str_mv	AT hussainsharmina computationalfluiddynamicsstudyofflowbehaviourinasinglespacerfilledmembranemodule
_version_	1814308284005351424

Computational fluid dynamics study of flow behaviour in a single spacer filled membrane module

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