温度成層化した多孔質層における加熱フィンまわりの自然対流

概要

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A theoretical analysis is presented for the conjugate conduction-convection problems of a free convection fin with an infinite length, embedded in a porous medium of infinite extent. In view of practical applications, the analysis takes account of a possible thermal stratification within the surrounding porous medium. An integral procedure is exploited to solve the boundary layer equations for the Darcian fluids, while the thin-fin approximation is evoked for the quasi-one-dimensional heat conduction equation for the fin. Similarity solutions re obtained for a class of the fins in which the conduction-thickness product varies according to the power function of the distrance form the origin. Some of the results are compared with available exact solutions. It will also be shown that the presence of thermal stratification within a porous medium can significantly displace the isotherms around the fin.
一般社団法人日本機械学会の論文
1986-09-25