壁面の一部が加熱された流路の熱伝達に対する壁内熱伝導の影響

概要

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This paper dealt with the effects of heat condition within the wall on the heat transfer of a patchily heated tube : considering both the circumferential and longitudinal heat conduction within the tube wall, the heat transfer coefficients and the wall temperature profiles of the tube were numerically obtained. The numerical results show that the substantial heat transfer coefficients of the heated region decreases with longitudinal wall conduction. but circumferential wall conduction has little effect on the substantial heat transfer coefficients. This means that the effects of circumferential and longitudinal wall conduction on the heat transfer of the patchily heated tube may be independent. Making use of the concepts of "pseudo-fin", the amount of heat conducted to both the circumferential and longitudinal unheated regions and the apparent heat transfer coefficients of the heated region were analytically predicted. These results agree well with the numerical ones whatever the shape of the heated region.
一般社団法人日本機械学会の論文
1988-03-25