小円柱による円柱まわりの流れの制御に関する研究 : 第1報,はく離せん断層の強制再付着

概要

論文の詳細を見る
Fundamental studies on the control of the flow around a circular cylinder were conducted by a new method. It was found that a forced reattachment of the separated shear layer from the cylinder was realized by setting up a small cylinder in the shear layer near the main cylinder. The diameters of the cylinders were 40 and 2 mm, respectively, and the Reynolds number ranged from 5.1×10^3 to 5.1×10^4. At the gap of the two cylinders from 3 to 6 mm, the shear layer reattached onto the rear surface of the cylinder and the flow adhered beyond the rear stagnation point. The results obtained were as follows: The drag of the main cylinder decreased about 20 to 30% and the lift was generated by the forced reattachment with a value of C_L=1.0.
一般社団法人日本機械学会の論文
1989-03-25