MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surface
An analysis is carried out to study the effects of variable thermo-physical properties on an unsteady MHD flow and heat transfer of an Ostwald–de Waele fluid over a stretching surface. The thermo-physical properties, namely, viscosity and thermal conductivity of the fluid are assumed to vary with te...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2014-03-01
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| Series: | Ain Shams Engineering Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090447913000841 |
| _version_ | 1818672985460965376 |
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| author | K. Vajravelu K.V. Prasad P.S. Datti B.T. Raju |
| author_facet | K. Vajravelu K.V. Prasad P.S. Datti B.T. Raju |
| author_sort | K. Vajravelu |
| collection | DOAJ |
| description | An analysis is carried out to study the effects of variable thermo-physical properties on an unsteady MHD flow and heat transfer of an Ostwald–de Waele fluid over a stretching surface. The thermo-physical properties, namely, viscosity and thermal conductivity of the fluid are assumed to vary with temperature. Using similarity transformation, the governing partial differential equations are converted into coupled, non-linear ordinary differential equations with variable coefficients. The resulting non-linear equations are solved numerically by a second-order finite difference scheme known as the Keller-box method for various values of the pertinent parameters. Also, the numerical results are obtained for special cases and are found to be in good agreement with those of the results available in the literature. Further, the results obtained reveal many interesting behaviors that warrant further study of the equations related to non-Newtonian fluid phenomena, especially the shear-thinning phenomena. Shear thinning reduces the wall shear stress. |
| first_indexed | 2024-12-17T07:48:36Z |
| format | Article |
| id | doaj.art-dc7afc1e3c694606b470d8a739f57bb9 |
| institution | Directory Open Access Journal |
| issn | 2090-4479 |
| language | English |
| last_indexed | 2024-12-17T07:48:36Z |
| publishDate | 2014-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ain Shams Engineering Journal |
| spelling | doaj.art-dc7afc1e3c694606b470d8a739f57bb92022-12-21T21:57:56ZengElsevierAin Shams Engineering Journal2090-44792014-03-015115716710.1016/j.asej.2013.07.009MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surfaceK. Vajravelu0K.V. Prasad1P.S. Datti2B.T. Raju3Department of Mathematics, Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816, USADepartment of Mathematics, VSK University, Vinayaka Nagar, Bellary 583 104, Karnataka, IndiaT.I.F.R., Centre for Applicable Mathematics, Sharada Nagar, Yelahanka New Town, Bangalore 560 065, IndiaDepartment of Mathematics, Bangalore University, Bangalore 560 001, IndiaAn analysis is carried out to study the effects of variable thermo-physical properties on an unsteady MHD flow and heat transfer of an Ostwald–de Waele fluid over a stretching surface. The thermo-physical properties, namely, viscosity and thermal conductivity of the fluid are assumed to vary with temperature. Using similarity transformation, the governing partial differential equations are converted into coupled, non-linear ordinary differential equations with variable coefficients. The resulting non-linear equations are solved numerically by a second-order finite difference scheme known as the Keller-box method for various values of the pertinent parameters. Also, the numerical results are obtained for special cases and are found to be in good agreement with those of the results available in the literature. Further, the results obtained reveal many interesting behaviors that warrant further study of the equations related to non-Newtonian fluid phenomena, especially the shear-thinning phenomena. Shear thinning reduces the wall shear stress.http://www.sciencedirect.com/science/article/pii/S2090447913000841Ostwald–de Waele fluidMHD flowHeat transferVariable fluid propertiesUnsteady stretching surfaceFinite difference method |
| spellingShingle | K. Vajravelu K.V. Prasad P.S. Datti B.T. Raju MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surface Ain Shams Engineering Journal Ostwald–de Waele fluid MHD flow Heat transfer Variable fluid properties Unsteady stretching surface Finite difference method |
| title | MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surface |
| title_full | MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surface |
| title_fullStr | MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surface |
| title_full_unstemmed | MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surface |
| title_short | MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surface |
| title_sort | mhd flow and heat transfer of an ostwald de waele fluid over an unsteady stretching surface |
| topic | Ostwald–de Waele fluid MHD flow Heat transfer Variable fluid properties Unsteady stretching surface Finite difference method |
| url | http://www.sciencedirect.com/science/article/pii/S2090447913000841 |
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