> The turbulence characteristics of the near wake flow behind a rectangular cylinder is investigated in a two-dimensional analysis using a hot-wire anemometer. The time-averaged and fluctuating components of the velocity are measured for a cylinder having various width-to-height (b h-1) ratios. The measurements are carried out in a low-speed wind tunnel. Data from hot-wire anemometer is collected by a data acquisition system. The results show that the turbulence intensity in the flow wake decreases as the width-to-height ratio of the cylinder increases. In addition, the characteristics of the flow field in a few sections are evaluated. Spectral analysis of the velocity signals is carried out for two different Reynolds numbers. The spectral analysis shows that Strouhal number remains nearly constant in high Reynolds numbers. The results of present experiments are in close agreement with the most widely accepted results in the literature.
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机译： >使用热线风速计在二维分析中研究了矩形圆柱体后面的近尾流的湍流特性。对于具有各种宽高比（b h -1 ）的圆柱，测量速度的时间平均和波动分量。测量是在低速风洞中进行的。来自热线风速仪的数据由数据采集系统收集。结果表明，随着圆柱体的宽高比增加，流动尾流中的湍流强度减小。此外，还评估了几个部分的流场特性。对两个不同的雷诺数进行速度信号的频谱分析。光谱分析表明，在高雷诺数下，斯特劳哈尔数几乎保持恒定。当前实验的结果与文献中最广泛接受的结果非常吻合。
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