Simultaneous radiation and forced convection in thermally developing turbulent flow through a parallelplate channel
Abstract
The interaction of radiation and forced convection in a thermally developing steady turbulent flow of an absorbing, emitting, isotropically scattering gray fluid in a parallelplate channel is investigated. The plates are assumed to be gray, opaque, diffusely emitting and diffusely reflecting. A formal solution to the energy equation is developed in terms of turbulent Graetz eigenfunctions for a stepchange in the temperature of the plates, while the radiation part of the problem is analyzed by the Galerkin method. An iterative scheme is employed to evaluate the resulting equations numerically. The effects of the conductionradiation parameter, optical thickness, singlescattering albedo and the surface emissivity on the temperature distribution and the local Nusselt number in the thermal entrance region are investigated for several values of the Reynolds number and the Prandtl number. The results are presented in graphical forms.
 Publication:

IN: Fundamentals of thermal radiation heat transfer; Proceedings of the Winter Annual Meeting
 Pub Date:
 December 1984
 Bibcode:
 1984asme.meet...57Y
 Keywords:

 Channel Flow;
 Forced Convection;
 Gray Gas;
 Parallel Plates;
 Thermal Radiation;
 Turbulent Flow;
 Eigenvalues;
 Eigenvectors;
 Galerkin Method;
 Nusselt Number;
 Optical Thickness;
 Prandtl Number;
 Reynolds Number;
 Steady Flow;
 Fluid Mechanics and Heat Transfer