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This paper presents a brief review of the results of studies of acoustic impedance of orifices in the presence of the sliding flow. A simpler way of measuring the acoustic characteristics of the orifice with the sliding flow is considered. A nozzle for creating a dense air flow is developed. The scheme of the developed measuring installation is given. The velocity profile of the sliding flow is determined. The results of acoustic impedance measurement of the orifice are given and the experiment is carried out.

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Influence of Grazing Flow of Air on Acoustic Impedance of an Orifice

  • 会议论文

  • 发表日期：

    2025年

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  • Tanzilya G. Karakaeva,
  • Aleksei I. Bykov,
  • Olga Y. Matasova

摘要

This paper presents a brief review of the results of studies of acoustic impedance of orifices in the presence of the sliding flow. A simpler way of measuring the acoustic characteristics of the orifice with the sliding flow is considered. A nozzle for creating a dense air flow is developed. The scheme of the developed measuring installation is given. The velocity profile of the sliding flow is determined. The results of acoustic impedance measurement of the orifice are given and the experiment is carried out.