ロックイン状態の二次元角柱に作用する流体力(流体工学,流体機械)

概要

論文の詳細を見る
This paper describes the fluid force acting on the two-dimensional oscillating square cylinder in the locking-in region. The experiment was carried out in an N. P. L. blow-down type wind-tunnel with a working section of 400 mm×400 mm×2 000 mm, and with the Reynolds number of 1.4×10^4. The cylinder was then forced to oscillate sinusoidally in the lift direction. The power spectrum in the wake behind a square cylinder was measured to show the locking-in region in the present experiment. The time-mean pressure distribution and fluctuating pressure distribution on the surface of the square cylinder were measured for the displacement in the vibration. Consequently it was found that the mean drag and fluctuating lift increase and become maximum in the locking-in region, while the base pressure becomes low and attains minimum.
社団法人日本機械学会の論文
2002-03-25