円柱状格子による固体面からのふく射伝熱の制御

概要

論文の詳細を見る
Radiation heat transfer from a solid plane surface is directionally controllable by means of a grating composed of circular cylinders. An analysis of the radiation heat transfer is made for a physical model in which a grating of parallel cylinders is placed in front of a black heat-transfer surface, and the cylinder surfaces have both specular and diffuse reflectivity components ( ρ_c=ρ^s_c+ρ^d_c). Numerical solutions are obtained. The apparent directional emissivities and the limiting angles expressing a degree of energy concentration are calculated for parameters such as ρ^s_c/ρ_c and center-to-center distance of cylinders. It is clarified that the grating of cylinders is useful for concentrating the radiation energy emitted from the heat-transfer surface in the direction normal to the grating surface.
社団法人日本機械学会の論文
1993-04-25