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Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection

This paper studies the effect of suction or injection on unsteady bounday layer flow of a micropolar fluid near the forward stagnation point of a permeable wall. The velocity of the external flow as well as that of suction or injection are assumed to start impulsively from rest and are maintained th...

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Main Authors: Lok, Yian Yian, Amin, Norsarahaida, Pop, Loan
Format: Article
Language:English
English
Published: Penerbit UTM Press 2007
Subjects:
QA Mathematics
Online Access:http://eprints.utm.my/id/eprint/5701/1/NorsarahaidaAmin2007_UnsteadyBoundaryLayerFlowofaMicropolarFluid.pdf
http://eprints.utm.my/id/eprint/5701/2/286
http://eprints.utm.my/id/eprint/5701/
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spelling my.utm.57012014-01-05T07:08:42Z http://eprints.utm.my/id/eprint/5701/ Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection Lok, Yian Yian Amin, Norsarahaida Pop, Loan QA Mathematics This paper studies the effect of suction or injection on unsteady bounday layer flow of a micropolar fluid near the forward stagnation point of a permeable wall. The velocity of the external flow as well as that of suction or injection are assumed to start impulsively from rest and are maintained thereafter. The model is governed by a set of coupled partial differential equations that is solved numerically for some values of the suction, injection and material parameters. Profiles for the velocity, microrotation and skin friction coeffiecient are determinedand presented in tables and graphical forms. The results show that suction increases the skin friction while the opposite behaviour is observed for the case of injection. It is also found that an increase in the material parameter will enhance the flow near the wall. On the other hand, it can be seen that in the case of injection, longer time is required to approach the steady flow than in the case of suction Penerbit UTM Press 2007-06 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/5701/1/NorsarahaidaAmin2007_UnsteadyBoundaryLayerFlowofaMicropolarFluid.pdf text/html en http://eprints.utm.my/id/eprint/5701/2/286 Lok, Yian Yian and Amin, Norsarahaida and Pop, Loan (2007) Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection. Jurnal Teknologi, 46 (C). pp. 15-32. ISSN 0126-9797 (Print); 2180–3722 (Electronics) DOI:10.11113/jt.v46.286
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
English
topic QA Mathematics
spellingShingle QA Mathematics
Lok, Yian Yian
Amin, Norsarahaida
Pop, Loan
Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection
description This paper studies the effect of suction or injection on unsteady bounday layer flow of a micropolar fluid near the forward stagnation point of a permeable wall. The velocity of the external flow as well as that of suction or injection are assumed to start impulsively from rest and are maintained thereafter. The model is governed by a set of coupled partial differential equations that is solved numerically for some values of the suction, injection and material parameters. Profiles for the velocity, microrotation and skin friction coeffiecient are determinedand presented in tables and graphical forms. The results show that suction increases the skin friction while the opposite behaviour is observed for the case of injection. It is also found that an increase in the material parameter will enhance the flow near the wall. On the other hand, it can be seen that in the case of injection, longer time is required to approach the steady flow than in the case of suction
format Article
author Lok, Yian Yian
Amin, Norsarahaida
Pop, Loan
author_facet Lok, Yian Yian
Amin, Norsarahaida
Pop, Loan
author_sort Lok, Yian Yian
title Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection
title_short Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection
title_full Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection
title_fullStr Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection
title_full_unstemmed Unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection
title_sort unsteady boundary layer flow of a micropolar fluid near a stagnation point with uniform suction or injection
publisher Penerbit UTM Press
publishDate 2007
url http://eprints.utm.my/id/eprint/5701/1/NorsarahaidaAmin2007_UnsteadyBoundaryLayerFlowofaMicropolarFluid.pdf
http://eprints.utm.my/id/eprint/5701/2/286
http://eprints.utm.my/id/eprint/5701/
_version_ 1643644380076048384
score 13.211869

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