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The hydrodynamic near-field and acoustic far-field characteristics of an unheated Mach 0.5 jet manipulated using steady fluidic injection are experimentally investigated. The fluidic injection is introduced via two injectors placed diametrically opposite in the upstream direction, injecting air normal to the main jet. Extensive measurements are performed on the natural and manipulated jets. The present study shows a significant reduction in turbulent intensities and overall sound pressure levels for the manipulated jets.

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Flow-Field and Acoustic Characterization of Actively Controlled Jets via Steady Fluidic Injection

  • 会议论文

  • 发表日期：

    2025年

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  • Ambica Singh,
  • Arun Kumar Perumal,
  • Arnab Samanta

摘要

The hydrodynamic near-field and acoustic far-field characteristics of an unheated Mach 0.5 jet manipulated using steady fluidic injection are experimentally investigated. The fluidic injection is introduced via two injectors placed diametrically opposite in the upstream direction, injecting air normal to the main jet. Extensive measurements are performed on the natural and manipulated jets. The present study shows a significant reduction in turbulent intensities and overall sound pressure levels for the manipulated jets.