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首页> 外文期刊>The Aeronautical Journal >An experimental and numerical study of synthetic jet flow
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An experimental and numerical study of synthetic jet flow

机译:合成射流的实验和数值研究

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摘要

The flow generated by a synthetic jet actuator with a circular orifice is investigated experimentally and computationally. The experimental data and computational predictions are in fair to good agreement with each other and with the theory for a steady turbulent jet. It is found, however, that the synthetic jet establishes itself much more rapidly than the steady jet, primarily because of turbulent dissipation. The oscillatory nature of synthetic jet flow also gives rise to a much greater entrainment of ambient fluid compared with the case of a steady jet. Finally, self-similarity seems to be established when the oscillations Introduced by the actuator are reduced to negligible levels.
机译:对带有圆形孔口的合成射流致动器产生的流量进行了实验和计算研究。实验数据和计算预测彼此之间以及与稳定湍流射流的理论之间都相当公平。但是,发现合成射流的建立速度比稳定射流快得多,这主要是由于湍流耗散。与稳定射流的情况相比,合成射流的振荡特性还导致更多地夹带环境流体。最后,当执行器引起的振荡降低到可以忽略的水平时,似乎建立了自相似性。

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