Scattering of Radiation on Rough Surface Modelled by Three-Dimensional Superimposition Technique

Abstract

This work is one of the fundamental steps in the study of thermal radiation characteristics of metallic materials in actual industrial or natural environments. A new algorithm is presented for modelling the microstructure of a rough surface. A superimposition technique is introduced to realize the concept of three-dimensional continuous self-similar microgeometry. Scattering of radiation on the surface is described on the basis of an electromagnetic theory of diffraction. The proposed method is examined by means of a numerical calculation and a bidirectional reflectance measurement.