CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems

An unsteady forced slip velocity has an important effect on the flow conditions adjacent to a membrane interface, which can help control concentration polarisation (CP) and fouling. This study explores the effect of non-sinusoidal slip velocity waveforms on mass transfer and shear stress in membrane...

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Main Authors:	Liang, Y. Y., Weihs, G. A. Fimbres, Fletcher, D. F.
Format:	Article
Language:	English
Published:	Elsevier 2018
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/21775/ http://umpir.ump.edu.my/id/eprint/21775/ http://umpir.ump.edu.my/id/eprint/21775/ http://umpir.ump.edu.my/id/eprint/21775/1/CFD%20study%20of%20the%20effect%20of%20unsteady%20slip%20velocity-1.pdf

id	ump-21775
recordtype	eprints
spelling	ump-217752019-12-31T01:48:15Z http://umpir.ump.edu.my/id/eprint/21775/ CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems Liang, Y. Y. Weihs, G. A. Fimbres Fletcher, D. F. TP Chemical technology An unsteady forced slip velocity has an important effect on the flow conditions adjacent to a membrane interface, which can help control concentration polarisation (CP) and fouling. This study explores the effect of non-sinusoidal slip velocity waveforms on mass transfer and shear stress in membrane channels. The hydrodynamics and mass transfer of unobstructed and obstructed membrane channels under the influence of slip velocity are simulated using two-dimensional computational fluid dynamics (CFD). At a Reynolds number where vortex shedding occurs, the results show that both sinusoidal and non-sinusoidal slip velocity profiles cause a similar increase in mass transfer and shear stress. However, for systems without vortex shedding, a non-sinusoidal waveform with a sudden decrease in slip velocity can significantly increase maximum shear stress (by over 20%). This effect shows a clear advantage of non-sinusoidal slip velocity profiles over sinusoidal slip velocity profiles. Elsevier 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/21775/1/CFD%20study%20of%20the%20effect%20of%20unsteady%20slip%20velocity-1.pdf Liang, Y. Y. and Weihs, G. A. Fimbres and Fletcher, D. F. (2018) CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems. Chemical Engineering Science, 192. pp. 16-24. ISSN 0009-2509 https://doi.org/10.1016/j.ces.2018.07.009 doi: 10.1016/j.ces.2018.07.009
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Liang, Y. Y. Weihs, G. A. Fimbres Fletcher, D. F. CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems
description	An unsteady forced slip velocity has an important effect on the flow conditions adjacent to a membrane interface, which can help control concentration polarisation (CP) and fouling. This study explores the effect of non-sinusoidal slip velocity waveforms on mass transfer and shear stress in membrane channels. The hydrodynamics and mass transfer of unobstructed and obstructed membrane channels under the influence of slip velocity are simulated using two-dimensional computational fluid dynamics (CFD). At a Reynolds number where vortex shedding occurs, the results show that both sinusoidal and non-sinusoidal slip velocity profiles cause a similar increase in mass transfer and shear stress. However, for systems without vortex shedding, a non-sinusoidal waveform with a sudden decrease in slip velocity can significantly increase maximum shear stress (by over 20%). This effect shows a clear advantage of non-sinusoidal slip velocity profiles over sinusoidal slip velocity profiles.
format	Article
author	Liang, Y. Y. Weihs, G. A. Fimbres Fletcher, D. F.
author_facet	Liang, Y. Y. Weihs, G. A. Fimbres Fletcher, D. F.
author_sort	Liang, Y. Y.
title	CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems
title_short	CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems
title_full	CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems
title_fullStr	CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems
title_full_unstemmed	CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems
title_sort	cfd study of the effect of unsteady slip velocity waveform on shear stress in membrane systems
publisher	Elsevier
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/21775/ http://umpir.ump.edu.my/id/eprint/21775/ http://umpir.ump.edu.my/id/eprint/21775/ http://umpir.ump.edu.my/id/eprint/21775/1/CFD%20study%20of%20the%20effect%20of%20unsteady%20slip%20velocity-1.pdf
first_indexed	2023-09-18T22:32:06Z
last_indexed	2023-09-18T22:32:06Z
_version_	1777416353895940096

CFD study of the effect of unsteady slip velocity waveform on shear stress in membrane systems

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