ABSTRACT

Present experimental study reports the thermal and flow measurement of multiple-orifice synthetic jet involving circular, square, and rectangular orifice shapes. Here, an infrared camera and constant temperature anemometer are used for measurement of surface temperature and flow velocity, respectively. Reynolds number and the dimensionless axial distance is varied within 1689–4670 and 1–25. The average Nusselt number for the multiple-orifice jet is found to be 60% higher compared to single orifice jets. The power spectral density of the velocity signal is analyzed to understand the vortex dynamics.

中文翻译：

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电子冷却电磁致动器驱动的单腔多孔合成射流冲击热行为的实验研究

摘要

目前的实验研究报告了涉及圆形、方形和矩形孔口形状的多孔口合成射流的热和流量测量。在这里，红外摄像机和恒温风速计分别用于测量表面温度和流速。雷诺数和无量纲轴向距离在 1689-4670 和 1-25 之间变化。多孔射流的平均努塞尔数比单孔射流高 60%。分析速度信号的功率谱密度以了解涡流动力学。