采用水模拟氢气泡流动显示的方法对开缝钝体近尾流结构进行了实验研究。
By the method of water flow pattern visualization with hydrogen bubbles, the near wake flow behind a slit bluff body has been experimentally studied.
对山体尾流中最大平均速度扰动和湍流强度扰动的衰减规律以及山体尾流结构进行了分析。
The decay laws of the normalized maximum perturbations in the mean velocity and turbulent intensity in the wake and the wake structure are discussed.
本项研究表明，光学流态显示和数字图象技术相结合，可以有效地揭示汽车的尾流结构，诊断阻力来源。
The results show that it is effective, by combining the laser flow visualization and the digital-image processing technology, to reveal the structure of car's wake and to determine the source of drag.
计算结果表明，尾翼的加装可以改善尾流结构，而选择合理的尾翼剖面形状，则能使得气动特性得到最佳改善效果。
It is confirmed that the rear wing with proper sectional shape could improve the wake structure and aerodynamics characteristics.
实验测量了射流与圆柱尾流纵、横向的湍流速度脉动，计算了这两种方向的湍流速度结构函数的标度规律。
The scaling of the longitudinal and transverse velocity structure functions is studied experimentally for turbulent jet and cylindrical wake flow.
这与有关文献中所指出的离心风机的“射流尾流”结构相对应。
It corresponds to the "jet wake" structure of centrifugal compressor.
通过采用外部声激励的方式，在低速轴流压气机内研究非定常尾流撞击效应对压气机流场结构以及时均气动性能的影响。
Influence of the wake impact effect on the flow field and its average performance in a low speed axial-flow compressor was investigated by using external acoustic excitations.
研究结果表明：通过优化有效降低了因二次流漩涡、风机蜗舌结构、尾流-射流和正冲角等造成的能量损失，提高了离心通风机性能。
The results show that the performance of optimized fan is improved by lowering the energy loss which caused by the secondary flow vortex, the volute tongue, the wake-jet and the angle of attack.
实验结果表明：当发生尾流撞击耦合效应时，压气机内部流动的时空结构以及时均气动性能均得到较大提高。
The results indicate that the time-space structure and the average aerodynamic performance can be improved greatly when the couple of wake impact effect is occurred.
利用光学系统可以识别尾流区和探测尾流内部的精细结构以及识别不同形状的尾流。
It is shown that the wake region can be identified, the wake with different shapes can be distinguished, and the fine structure within wakes can be detected.
利用光学系统可以识别尾流区和探测尾流内部的精细结构以及识别不同形状的尾流。
It is shown that the wake region can be identified, the wake with different shapes can be distinguished, and the fine structure within wakes can be detected.
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