NUMERICAL INVESTIGATION OF MHD NONLINEAR RADIATIVE OBLIQUE FLOW OF MICROPOLAR LIQUID PAST A STRETCHING SHEET WITH POROUS MEDIUM

In this paper, we examine the flow and heat transfer characteristics of magnetohydrodynamic oblique stagnation point flow of micropolar fluid across a stretching surface in the presence of a porous medium. The heat transport phenomenon is examined in the presence of an irregular heat source/sink, Joule heat, and nonlinear radiation. Simultaneous solutions are presented for Newtonian and non-Newtonian fluid flows. Suitable similarity transformations are utilized to convert the basic partial differential equations into ordinary differential equations (ODEs). The attained nonlinear ODEs are highly coupled. These are solved with the successive application of R.K-Fehlberg and shooting techniques. The influence of dimensionless parameters on the flow fields (velocity, microrotation, and temperature) are explained via graphs. Computations for the rate of heat transfer, couple stress coefficient, and friction factor are discussed and presented with the aid of tables. Results specify that rising values of porous and magnetic field parameters result in a reduction in the velocity field but an enhancement in the thermal and microrotation fields. Also, it is interesting to note that irregular heat source/sink parameters play a major role in the heat transfer performance. To the best of our knowledge, simultaneous solutions for the oblique stagnation point flow of micropolar liquid with Joule heat and a variable heat source/sink has not yet been analyzed in the literature.