表面があらい薄板状粒子によるふく射の散乱

概要

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For heat transfer problems, radiation scattering characteristics of particles of various sizes should be investigated. A significant percentage of such particles is larger than the wavelength of the radiation considered, and have micro-geometrical structures on the surfaces. The scattering characteristics can be affected strongly by the surface structure. This paper presents a new technique for modelling a flake-type metal particle with a rough surface, which has a three-dimensional self-similar micro-structure. We describe the scattering by the particle on the basis of an electromagnetic wave theory. The behavior is characterized by three factors : wavelength of radiation, size of the particle and size of micro-structure of the particle surface. It is shown that the scattering characteristics change from the particle scattering-type to the surface scattering-type with an increase in the particle size. It is emphasized that the size parameter range, in which the conventional theories of particle scattering are directly applicable, is restricted.
一般社団法人日本機械学会の論文
1994-02-25