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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| Format: | Article |
| Language: | English English |
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Penerbit UTM Press
2007
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| Online Access: | http://eprints.utm.my/5701/1/NorsarahaidaAmin2007_UnsteadyBoundaryLayerFlowofaMicropolarFluid.pdf http://eprints.utm.my/5701/2/286 |
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| author | Lok, Yian Yian Amin, Norsarahaida Pop, Loan |
| author_facet | Lok, Yian Yian Amin, Norsarahaida Pop, Loan |
| author_sort | Lok, Yian Yian |
| collection | ePrints |
| 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 |
| first_indexed | 2024-03-05T18:07:11Z |
| format | Article |
| id | utm.eprints-5701 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English English |
| last_indexed | 2024-03-05T18:07:11Z |
| publishDate | 2007 |
| publisher | Penerbit UTM Press |
| record_format | dspace |
| spelling | utm.eprints-57012014-01-05T07:08:42Z http://eprints.utm.my/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/5701/1/NorsarahaidaAmin2007_UnsteadyBoundaryLayerFlowofaMicropolarFluid.pdf text/html en http://eprints.utm.my/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 |
| 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 |
| title | 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_short | 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 |
| topic | QA Mathematics |
| url | http://eprints.utm.my/5701/1/NorsarahaidaAmin2007_UnsteadyBoundaryLayerFlowofaMicropolarFluid.pdf http://eprints.utm.my/5701/2/286 |
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