MHD flow and heat transfer of an Ostwald–de Waele fluid over an unsteady stretching surface
| Autor: | Kuppalapalle Vajravelu, P.S. Datti, K. V. Prasad, B.T. Raju |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Partial differential equation
Shear thinning Materials science Ostwald–de Waele fluid MHD flow General Engineering Finite difference method Thermodynamics Mechanics Engineering (General). Civil engineering (General) Variable fluid properties Physics::Fluid Dynamics Viscosity Flow (mathematics) Ordinary differential equation Heat transfer Shear stress Unsteady stretching surface TA1-2040 |
| Zdroj: | Ain Shams Engineering Journal, Vol 5, Iss 1, Pp 157-167 (2014) |
| ISSN: | 2090-4479 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|