由实验结果可得到两种明显的尾迹涡结构、即射流尾迹涡和横流尾迹涡。
Two kinds of distinctive wake vortices were identified from the experimental results, namely the jet wake vortices and the crossflow wake vortices.
基于此种实验研究框架，本文对轴对称自由剪切流、变密度轴对称射流以及圆柱尾迹进行了一定的研究。
The dynamics of axisymmetric free shear flows, axisymmetric variable-density jets and wakes of cylinders have been studied, to a certain extent, under this framework.
本文采用LIF(激光诱导荧光)流动显示和PIV(粒子图像速度场仪)测量对横流冲击射流的尾迹涡结构进行了实验研究。
The wake vortices of an impinging jet in crossflow were studied experimentally by means of laser-induced fluorescence (LIF) flow visualization and particle image velocimetry (PIV) measurement.
结果表明，一次风射流由于与上游横向射流的相互作用，在背火侧形成尾迹涡，在向火侧形成剪切涡。
It is showed that being the interaction between primary air and upstream fluid, the shear eddy the the wake are formed on the two sides of the primary air respectively.
文中应用负射流理论解释三维计算中较大的数值粘性带来的尾迹偏移现象。
The negative eject theory is employed to explain the phenomena that the wake over-turn is due to large numerical viscosity.
实验结果表明，冷却孔射流下游附近存在明显的尾迹区域。
The test results show that there exists an evident wake zone near the downstream of the cooling hole jet-flow.
侧重分析了叶轮内部分离流动和射流尾迹区的形成和特点。
The numerical simulation demonstrate the details of the flow separation, the wake formation and the secondary flows development.
由测量结果可知：在双叶片叶轮内，流体基本沿叶片吸力面流动，叶片压力面上的相对速度较低，在压力面出口出现了速度很低的回流区，有明显“射流-尾迹”特征。
The results indicated that in the two-blade impeller, the fluid mainly flowed along the suction side, the velocity is very small on the pressure side, and a typical jet-wake flow has been observed.
由测量结果可知：在双叶片叶轮内，流体基本沿叶片吸力面流动，叶片压力面上的相对速度较低，在压力面出口出现了速度很低的回流区，有明显“射流-尾迹”特征。
The results indicated that in the two-blade impeller, the fluid mainly flowed along the suction side, the velocity is very small on the pressure side, and a typical jet-wake flow has been observed.
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