We made the flow visualization experiment for flow over bluff body or dual bluff body to study the characteristics of vortex shedding.
采用烟雾成像的可视化方法，对单、双三角柱型钝体的旋涡脱落特性进行了实验研究。
Based on the observation and analysis of flow visualization the mechanis of the vortex street has been recognized to be a flow instability probler.
本文根据水洞观察的结果，分析了圆柱体尾流中，卡门涡街形成的原因是由于流动的不稳定性所产生。
The obtained velocity vector distribution in the measured plane coincided with the flow visualization results under the same test condition. In addition these vortex flow field was analysed.
流场横截面内的速度矢量分布与相同实验条件下的流态显示结果相符合，并对涡流场加以分析。
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