Abstract
An analysis is developed to examine polarization and surface roughness effects on equilibrium temperature for interacting adiabatic surfaces uniformly irradiated by a solar flux. A semigray spectral model is employed to account for radiation property differences between the solar spectral interval and wavelengths of surface or thermal emission. The surfaces are composed of V-shaped roughness elements with randomly distributed included angles as specified by root-mean-square slope. Element walls are optically smooth with directional specular reflectance given by electromagnetic theory for the parallel and perpendicular polarized components. For surface emission, the surfaces are diffusely emitting and specularly reflecting with a constant specular reflectance. Comparisons of results from the various property models show that polarization effects can be neglected and that it is more important to account for the directional variation of the properties.
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