ABSTRACT

This chapter is concerned with convection heat transfer involving radiating media, and in general this will involve three combined modes of energy transfer: conduction, convection, and radiation. It should be clear from the results of the preceding chapter that problems involving several modes of energy transfer can result in a multitude of parameters; hence, for clarity, several assumptions will initially be imposed. Most convective heat transfer analyses involving no radiating media employ the boundary layer form of the energy equation. The most complete analyses pertaining to flow of a radiating fluid through heated or cooled ducts are those of Viskanta for slug flow and laminar flow. Both treatments are concerned with flow through an infinite parallel-plate channel. Two-dimensional analyses of combined convection and radiation have been presented by Einstein for slug flow of a gray fluid through parallel-plate and circular-tube channels of finite length.