The objective of this study was to obtain a database on the flowfield past an array of vortex generators (VGs) in a turbulent boundary layer. All testing was carried out in a low speed wind tunnel with a flow velocity of 29 ft/sec, giving a Reynolds number of 17,500 based on the width of the VG. The flowfield generated by an array of five ramp-shaped vortex generators was examined with hot wire anemometry and smoke flow visualization. The magnitude and extent of the velocity increase near the wall, the penetration of the velocity deficit into the core flow, and the peak streamwise vorticity are examined. Influence of various parameters on the effectiveness of the array is considered on the basis of the ability to pull high momentum fluid into the near wall region.
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机译：这项研究的目的是获得在湍流边界层中经过一系列涡流发生器（VG）的流场数据库。所有测试均在低速风洞中以29 ft / sec的流速进行，基于VG的宽度得出雷诺数为17,500。用热线风速仪和烟流可视化检查了由五个倾斜的涡流发生器阵列产生的流场。检查壁附近速度的大小和程度，速度赤字渗透到岩心流中以及峰值流向涡度。根据将高动量流体拉入近壁区域的能力来考虑各种参数对阵列有效性的影响。
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