MHD three dimensional flow of viscoelastic fluid with thermal radiation and variable thermal conductivity

Abstract

The objective of the present work is to model the magnetohydrodynamic (MHD) three dimensional flow of viscoelastic fluid passing a stretching surface. Heat transfer analysis is carried out in the presence of variable thermal conductivity and thermal radiation. Arising nonlinear analysis for velocity and temperature is computed. Discussion to importantly involved parameters through plots is presented. Comparison between present and previous limiting solutions is shown. Numerical values of local Nusselt number are computed and analyzed. It can be observed that the effects of viscoelastic parameter and Hartman number on the temperature profile are similar in a qualitative way. The variations in temperature are more pronounced for viscoelastic parameter K in comparison to the Hartman number M. The parameters N and ɛ give rise to the temperature. It is interesting to note that values of local Nusselt number are smaller for the larger values of ɛ.

Keywords

three dimensional flow / viscoelastic fluid / variable thermal conductivity / thermal radiation

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