Mixed convection stagnation point flow of a micropolar fluid towards a stretching sheet |
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Authors: | A Ishak R Nazar I Pop |
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Institution: | (1) School of Mathematical Sciences, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;(2) Faculty of Mathematics, University of Cluj, CP 253, 3400 Cluj, Romania |
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Abstract: | The mixed convection two-dimensional boundary layer flow of a micropolar fluid near the stagnation point on a stretching vertical
sheet is investigated. The stretching velocity and the surface temperature are assumed to vary linearly with the distance
from the stagnation point. The transformed ordinary differential equations are solved numerically for some values of the parameters
involved using a finite-difference scheme known as the Keller-box method. The features of the flow and heat transfer characteristics
are analyzed and discussed. Both assisting and opposing flows are considered. Results are presented in terms of the skin friction
coefficient and the local Nusselt number with selections of velocity, microrotation and temperature profiles. Dual solutions
are found to exist for the opposing flow. |
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Keywords: | Micropolar fluid Mixed convection Stagnation point Stretching sheet Mechanics of fluids |
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