Study on boundary layer transition of a rotating disk
Study on boundary layer transition of a rotating disk
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DOI：
10.1007/bf01170959
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发表时间：
1984-09
期刊：
影响因子：
2.7
通讯作者：
Y. Kohama
中科院分区：
文献类型：
--
作者：
Y. Kohama
本文详细地研究了旋转圆盘在非扰动流体中转捩区产生的螺旋涡的特性。通过近距离摄像机对转捩区的显示，发现沿螺旋涡轴向沿着出现的新的条纹状流型是出现在每个螺旋涡表面的环状涡。通过频闪狭缝光切割涡旋，阐明了涡旋产生的机理。实验还发现，涡的相速度为零。
Behaviour of spiral vortices being generated in transition regime of a disk rotating in otherwise undisturbed fluid is experimentally studied in detail. Through visualizations of the transition regime by using close-up camera, new striped flow patterns originating along the axis of spital vortices are found to be ring-like vortices which occur on the surfaces of each spiral vortices. Mechanism of the spiral vortex is clarified by cutting the vortices by strobo slit light. It is also found out experimentally that the phase velocity of the vortices is zero.