| Autor: |
Daniel Oluwole Makinde, Oswald Franks |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
International Journal of Numerical Methods for Heat & Fluid Flow. 25:252-264 |
| ISSN: |
0961-5539 |
| DOI: |
10.1108/hff-12-2013-0342 |
| Popis: |
Purpose – The purpose of this paper is to investigate the unsteady magnetohydrodynamic (MHD) Couette flow of an electrically conducting incompressible non-Newtonian third grade reactive fluid with temperature-dependent variable viscosity and thermal conductivity properties under isothermal surface conditions. Design/methodology/approach – The coupled non-linear partial differential equations for momentum and energy balance governing the transient problem are obtained and tackled numerically using a semi-discretization finite difference technique. Findings – The effects of various embedded thermophysical parameters on the velocity and temperature fields including skin friction, Nusselt number and thermal stability conditions are presented graphically and discussed quantitatively. Practical implications – The approach is applicable to modelling the complex physical phenomenon in MHD lubrications that occurs in numerous areas of engineering and industrial processes. Originality/value – This paper may be of industrial and engineering interest especially in understanding the combined effects of unsteadiness, variable thermophysical properties and magnetic field on the thermal stability condition for a reactive non-Newtonian third grade fluid under Couette flow scenario. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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