UNSTEADY MHD FLOW OF RADIATING CASSON FLUID THROUGH A PERMEABLE CHANNEL WITH SLIP, BUOYANCY FORCE AND HEAT SOURCE

  • Om Prakash Verma GALGOTIAS UNIVERSITY, GREATER NOIDA
  • Oluwole Daniel Makinde Faculty of Military Science, Stellenbosch University Private Bag X2, Saldanha 7395, South Africa
  • R. L. Monaledi Faculty of Military Science, Stellenbosch University Private Bag X2, Saldanha 7395, South Africa
Keywords: Unsteady channel flow; MHD Casson fluid; Velocity slip; Buoyancy force; Radiative heat

Abstract

Analytical investigation is performed into an unsteady Magnetohrodynamics mixed convective Casson fluid flow and heat transfer characteristics with thermal radiation, wall slip, heat source and buoyancy force in a permeable vertical channel. The fluid is injected into the left wall of the channel and sucked out at right wall. The governing momentum and energy balance equations are achieved and tackled analytically. The effects of numerous thermophysical parameters on the temperature profiles, velocity, Nusselt number as well as skin friction are presented graphically and discussed qualitatively. The results show that a temporal decline in the pressure gradient causes both the temperature and fluid velocity to decrease. Moreover, the enhancement in heat transfer due to wall injection/suction also causes the skin friction to decrease.

Published
2020-09-25
Section
Heat and Mass Transfer