Radiative Heat Transfer of an Optically Thick Gray Gas in The Presence of Indirect Natural Convection

Abstract

We study the effects of thermal radiation of a viscous incompressible fluid occupying a semi-infinite region of space bounded by an infinite horizontal moving hot flat plate in the presence of indirect natural convection by way of an induced pressure gradient. The fluid is a gray, absorbing emitting radiation but a non scattering medium. An exact solution is obtained by employing Laplace transform technique. Since temperature field depends on Reynold number the flow is considered to be non-isothermal case (the temperature of the plate T w ≠ constant) and for an isothermal case (T w = constant) the flow is determined by the Reynold number which is equal to 1.

Transient MHD Free Convective Flow of an Optically Thick Gray Gas Past a Moving Vertical Plate in the Presence of Thermal Radiation and Mass Diffusion

“…Aboeldahab and Azzam(2005) have described the effects of magnetic field on hydromagnetic mixed free forced heat and mass convection of a gray, optically-thick, electrically conducting viscous fluid along a semi-infinite inclined plane for high temperature and concentration using the Rosseland approximation. Ghosh and Pop (2007) and Jana and Ghosh (2011) have studied thermal radiation of an optically-thick gray gas in the presence of indirect natural convection showing that the pressure rise region leads to slightly increase in the velocity with an increase of radiation parameter. Patra et.al (2012) considered transient approach to radiation heat transfer free convection flow with ramped wall temperature.…”