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首页> 外文期刊>Aeronautical journal >Effect of aft wall slope on cavity pressure oscillations in supersonic flows
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Effect of aft wall slope on cavity pressure oscillations in supersonic flows

机译:后壁坡度对超音速流腔压力波动的影响

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摘要

An experimental study of supersonic flow over wall mounted cavities with different aft wall angles is carried out. Unsteady pressure measurements were made on the walls and floor of the cavity. Data analysis was performed on the experimental results using statistical methods. In the case of higher angled cavities, the presence of an upstream traveling acoustic wave could be confirmed. For lower angled cavities (60 degrees and less) where the acoustic wave could not be identified, the flow inside the cavity was more or less stable. Mode switching occurring in higher angled cavities was confirmed by spectrogram studies.
机译:进行了在不同后壁角的壁挂式腔体上超音速流动的实验研究。在空腔的壁和地板上进行了非稳态压力测量。使用统计方法对实验结果进行数据分析。在较大角度的腔体的情况下,可以确认上游传播声波的存在。对于无法识别声波的较低角度的空腔(60度或更小),空腔内部的流动或多或少是稳定的。通过频谱图研究证实了在较大角度的腔中发生的模式切换。

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