ダイヤ形正方形柱の抗力軽減と伝熱促進 : (ロッドによる流れ場の制御)

概要

論文の詳細を見る
To control the flow around a square prism placed diamond in airstream, a rod was set upstream of the prism. The side length of prism, D, was 20 mm and the Reynolds number based D ranged from 5.1×10^3 to 3.6×10^4. The diameter of the control rod, d, ranged from 1 to 12 mm and the distance, L, between the axis of the prism and rod was 30 to 120 mm. Two flow patterns with and without vortex shedding from the rod were occurred. The flow pattern changes depending on the rod diameter, its position and the Reynolds number. For the case without vortex shedding from the rod, the shear layer from the rod reattaches on the front face of the prism. In this case, at d/D=0.6 and L/D=3.0 the average heat transfer increase by 23% compared with that of without rod, and the reduction of the total drag becomes to about 34%.
一般社団法人日本機械学会の論文
1998-05-25