Abstract An extensive experimental study using Particle Image Velocimetry (PIV) on synthetic jets issuing from different orifice shapes is reported. All data are phase and time averaged to derive mean velocity, half-velocity width and rms velocity profiles in the near field of the jet (0 5, only profiles of circular and square jets become partially self-similar. For synthetic jets, higher turbulence content is measured for all orifice shapes at the centerline and close to the orifice exit in comparison to continuous jets.

中文翻译：

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从锐边孔口喷出的圆形和非圆形合成湍流射流的相位平均 PIV 研究

摘要报道了使用粒子图像测速 (PIV) 对从不同孔口形状发出的合成射流进行的广泛实验研究。所有数据均经过相位和时间平均，以推导出射流近场中的平均速度、半速度宽度和均方根速度分布（0 5，只有圆形和方形射流的分布变得部分自相似。对于合成射流，更高的湍流与连续射流相比，在中心线和靠近孔口出口处测量所有孔口形状的含量。