EFFECTS OF THERMAL RADIATION AND BUOYANCY FORCE ON TRANSIENT HARTMANN FLOW IN A CHANNEL WITH PERMEABLE WALLS

Authors

  • OM PRAKASH VERMA GALGOTIAS UNIVERSITY, GREATER NOIDA
  • O D Makinde of Military Science, Stellenbosch University Private Bag X2, Saldanha 7395, South Africa

DOI:

https://doi.org/10.52292/j.laar.2021.640

Keywords:

Unsteady flow, permeable channel, buoyancy force, radiative heat

Abstract

 The combined effects of thermal radiation, buoyancy force and variable heat source on an unsteady MHD flow of a conducting fluid through a porous walled channel is theoretically investigated.  Base on some simplified assumptions, the model partial differential equations are obtained and tackled analytically using variable separable technique. Numerical solutions depicting the impact of various embedded thermophysical parameters on the fluid velocity and temperature profiles, skin friction and Nusselt number are displayed graphically and quantitatively discussed. An escalation in both skin friction and heat transfer rate is observed with a rise in fluid injection–suction at the channel walls.    

Published

2021-09-30

Issue

Section

Heat and Mass Transfer