一様流中の傾斜長方形柱まわりの流動と熱伝達

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Experimental investigations were carried out on the fluid flow and heat transfer around a rectangular cylinder with a chord length of 50mm and an aspect ratio of 5/1. The angle of attack a was varied from 25 to 90deg, the freestream velocity from 6 to 20m/s. The flow on the upper-end-side face changes in the order laminar, separated-reattached and near wake with an increase in α. The flow on the front face is always laminar. The lower-end-side and rear faces are always exposed to separated flows, whose Nusselt numbers are given by Nu=CRe^<2/3>. The average Nusselt number on the rear face is correlated with the fluctuating pressure coefficient, C'_p, which is given as <Nu>^^^-=0.38(√<C'_pRe_c>)^<0.60>, and the overall Nusselt Nusselt number is given by Nu_m=0.275Re^<0.60>_c, where Nu and Re are defined by the chord length.
一般社団法人日本機械学会の論文
1992-02-25