Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet
Mixed convection boundary layer caused by time-dependent velocity and the surface temperature in the two-dimensional unsteady stagnation point flow of an in-compressible viscous fluid over a stretching vertical sheet is studied. The transformed nonlinear boundary layer equations are solved numerical...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Hindawi Publishing Corporation
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/30698/ http://psasir.upm.edu.my/id/eprint/30698/1/195360.pdf |
| _version_ | 1848846752322420736 |
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| author | Nik Long, Nik Mohd Asri Koo, Lee Feng Wong, Tze Jin Suali, Melini |
| author_facet | Nik Long, Nik Mohd Asri Koo, Lee Feng Wong, Tze Jin Suali, Melini |
| author_sort | Nik Long, Nik Mohd Asri |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Mixed convection boundary layer caused by time-dependent velocity and the surface temperature in the two-dimensional unsteady stagnation point flow of an in-compressible viscous fluid over a stretching vertical sheet is studied. The transformed nonlinear boundary layer equations are solved numerically using the shooting technique in cooperation with Runge-Kutta-Fehlberg (RKF) method. Different step sizes are used ranging from 0.0001 to 1. Numerical results for the skin friction coefficient and local Nusselt number are presented for both assisting and opposing flows. It is found that the dual solutions exist for the opposing flow, whereas the solution is unique for the assisting flow. Important features of the flow characteristics are displayed graphically. Comparison with the existing results for the steady case show an excellent agreement. |
| first_indexed | 2025-11-15T09:07:42Z |
| format | Article |
| id | upm-30698 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:07:42Z |
| publishDate | 2013 |
| publisher | Hindawi Publishing Corporation |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-306982019-10-31T03:22:40Z http://psasir.upm.edu.my/id/eprint/30698/ Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet Nik Long, Nik Mohd Asri Koo, Lee Feng Wong, Tze Jin Suali, Melini Mixed convection boundary layer caused by time-dependent velocity and the surface temperature in the two-dimensional unsteady stagnation point flow of an in-compressible viscous fluid over a stretching vertical sheet is studied. The transformed nonlinear boundary layer equations are solved numerically using the shooting technique in cooperation with Runge-Kutta-Fehlberg (RKF) method. Different step sizes are used ranging from 0.0001 to 1. Numerical results for the skin friction coefficient and local Nusselt number are presented for both assisting and opposing flows. It is found that the dual solutions exist for the opposing flow, whereas the solution is unique for the assisting flow. Important features of the flow characteristics are displayed graphically. Comparison with the existing results for the steady case show an excellent agreement. Hindawi Publishing Corporation 2013 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/30698/1/195360.pdf Nik Long, Nik Mohd Asri and Koo, Lee Feng and Wong, Tze Jin and Suali, Melini (2013) Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet. Mathematical Problems in Engineering, 2013. art. no. 195360. pp. 1-10. ISSN 1024-123X; ESSN: 1563-5147 http://www.hindawi.com/journals/mpe/2013/195360/ 10.1155/2013/195360 |
| spellingShingle | Nik Long, Nik Mohd Asri Koo, Lee Feng Wong, Tze Jin Suali, Melini Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet |
| title | Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet |
| title_full | Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet |
| title_fullStr | Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet |
| title_full_unstemmed | Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet |
| title_short | Mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet |
| title_sort | mixed convection boundary layers with prescribed temperature in the unsteady stagnation point flow toward a stretching vertical sheet |
| url | http://psasir.upm.edu.my/id/eprint/30698/ http://psasir.upm.edu.my/id/eprint/30698/ http://psasir.upm.edu.my/id/eprint/30698/ http://psasir.upm.edu.my/id/eprint/30698/1/195360.pdf |