The turbulence intermitency in pipe transition flow is investigated experimentally by using laser Doppler velocimetry.
用激光测速方法研究圆管流动的湍流间歇现象。
2
The free shear layer is a typical flow phenomenon which includes transition and turbulence. The plane jet is a type of free shear flow more complicated than the plane mixing layer.
自由剪切流是一种典型的包含转捩和湍流的流动现象，而平面射流是一种比平面混合层复杂的自由剪切流。
3
Meanwhile, the stream turbulence effects on the measurement are studied. Finally, the problems which must be researched further are presented for indicating boundary-layer transition.