ABSTRACT

This chapter presents the mutual interaction of the two separate modes of energy transfer; consequently, a very simple physical model. Specifically, it will be assumed that the medium is gray, that the absorption coefficient, the scattering coefficient, and thermal conductivity of the medium are independent of temperature, and that the bounding surfaces are gray and diffuse. In addition, restriction is made to one-dimensional energy transfer through a medium bounded by two infinite parallel surfaces. As in the case of radiative equilibrium, the exponential kernel approximation offers a convenient means of attacking the problem of combined conduction and radiation. The chapter describes this procedure has been employed by Lick for nonscattering media, and his analysis.