(Kenyatta University, 2020) Ouru, John Olum; Winfred N. Mutuku
The current study investigates the buoyancy-induced MHD stagnation point flow of
Williamson fluid with thermal radiation over a stretching sheet. A system of nonlinear partial
differential together with the boundary conditions governing the fluid flow are formulated,
then transformed to ordinary differential equations using appropriately identified similarity
variables. The resulting equations are solved numerically by combination of shooting
technique and Runge-Kutta fourth order integration scheme. The results are depicted
graphically to illustrate the effects of thermal radiation parameter, buoyancy and
electromagnetic forces on both the fluid velocity and temperature. The results revealed that
an increase in buoyancy leads to an increase in the overall velocity of the flow but a decrease
in the temperature of the flow.