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Investigation into clustering of synthetic jet actuators for flow separation control applications

机译:用于流分离控制应用的合成射流执行器成簇的研究

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摘要

An investigation into the behaviour of clustered synthetic jet Actuators for flow-control applications is described. Experiments have been undertaken with two small-scale synthetic jet actuators in a zero-pressure gradient boundary-layer, in order to investigate the effect of configuration yaw angle and relative input signal phase. Oil-flow visualisation and hotwire anemometry techniques were used, demonstrating that changes in the downstream flow structure could be observed. Compared to a streamwise configuration, in which a symmetrical counter-rotating vortex pair was produced by the synthetic jet-boundary-layer interaction, a broader asymmetric interaction was produced in a 15° yaw configuration. Streamwise velocity contour plots, illustrating the development of the interaction downstream, over four phase angles, were presented. Significant differences in the PSD analyses of downstream streamwise velocity time histories were found, suggesting that input signal phase could influence the stability and hence effectiveness of flow structures used in flow-control applications.
机译:描述了一种用于流量控制应用的簇状合成射流致动器的性能研究。为了研究配置偏航角和相对输入信号相位的影响,已经在零压力梯度边界层中使用两个小型合成射流致动器进行了实验。使用了油流可视化和热线风速测定技术,表明可以观察到下游流动结构的变化。与通过合成射流-边界层相互作用产生对称的反向旋转涡流对的流向配置相比,在15°偏航配置中产生了更广泛的不对称相互作用。提出了沿流向的速度轮廓图,说明了在四个相角上下游相互作用的发展。在下游流向速度时间历史的PSD分析中发现了显着差异,这表明输入信号相位可能会影响流量控制应用中的流量结构的稳定性和有效性。

著录项

  • 来源
    《The Aeronautical Journal》 |2005年第1091期|p.35-44|共10页
  • 作者

    S. C. Liddle; N. J. Wood;

  • 作者单位

    School of Mechanical, Aerospace and Civil Engineering University of Manchester Manchester, UK;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空;
  • 关键词

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