非対称な流れ場を形成する物体から放出される渦の過渡的特性 : 微小な回転振動をする迎え角を持った薄い対称翼の場合

概要

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An experimental study was carried out on vortices issued from a thin symmetrical airfoil with angle of attack under rotational oscillation of small amplitude. The experiments were conducted in a hydraulic flume using Laser Doppler Velocimetry (LDV) and ensemble averaging technique to map the unsteady velocity field about the vortex generating region. From this study, transitional characteristics of vortices issued from a body which creasts asymmetric flow field became clear. Especially, the reducing mechanism of circulation due to different flow characteristics between the upper and lower vortices became clear from investigation of time variation of the vorticity and shear velocity distributions.
一般社団法人日本機械学会の論文
1992-06-25