## THERMAL SCIENCE

International Scientific Journal

### INFLUENCE OF THERMAL RADIATION AND HEAT GENERATION/ABSORPTION ON MHD HEAT TRANSFER FLOW OF A MICROPOLAR FLUID PAST A WEDGE CONSIDERING HALL AND ION SLIP CURRENTS

**ABSTRACT**

In this paper a numerical model is developed to examine the effect of thermal radiation on magnetohydrodynamic heat transfer flow of a micropolar fluid past a non-conducting wedge in presence of heat source/sink. In the model it is assumed that the fluid is viscous, incompressible and electrically conducting. The Hall and ion slip effects have also been taken into consideration. The model contains highly non-linear coupled partial differential equations which have been converted into ordinary differential equation by using the similarity transformations. These equations are then solved numerically by Shooting technique along with the Runge-Kutta-Fehlberg integration scheme for entire range of parameters with appropriate boundary conditions. The effects of various parameters involved in the problem have been studied with the help of graphs. Numerical values of skin friction coefficients and Nusselt number are presented in tabular form. The results showed that the micropolar fluids are better to reduce local skin drag as compared to Newtonian fluids and the presence of heat sink increases the heat transfer rate.

**KEYWORDS**

PAPER SUBMITTED: 2011-07-12

PAPER REVISED: 2012-05-22

PAPER ACCEPTED: 2012-06-05

**THERMAL SCIENCE** YEAR

**2014**, VOLUME

**18**, ISSUE

**Supplement 2**, PAGES [S489 - S502]

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