外筒にスロットを有し, 内筒が回転する環状流路の圧力損失および熱伝達 : 第2報, 熱伝達特性

概要

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In order to design rotating electrical machines, the heat transfer characteristics of axial air flow through an annulus with a rotating inner cylinder are experimentally studied. The results obtained are as follows: (1) When one (inner or outer) wall alone is heated and the outer cylinder surface is smooth, the Stanton number can be expressed as a function of a dimensionless number X≡REea^2/R_w (Rea: axial Reynolds number, R_w: rotating Reynolds number). (2) When the outer cylinder surface is deep-slotted, the Stanton number can also be expressed as a function of X. (3) When the inner cylinder is rotating, the Stanton number for the case of both walls heated is nearly equal to that for the case of only one wall heated.
社団法人日本機械学会の論文
1991-06-25