Aerodynamic Noise Reduction Using Active Flow Control Techniques

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Abstract

Experimental studies using active flow control techniques for trailing edge noise reduction have been carried out. The experiments were performed for a flat plate test rig, equipped with different types of active flow control devices, namely steady boundary layer suction, steady blowing and unsteady blowing using sweeping jet actuators. The results of the boundary layer surface pressure energy spectra show that the proposed active flow control methods can offer significant reduction in the trailing edge noise, particularly at low frequencies, where passive noise control techniques, such as serrations, are not particularly effective. Further experiments are planned to study the aerodynamic benefits of the proposed methods and also their effects on flow mixing and lateral coherence of the turbulent structures within the boundary layer and wake
Original languageEnglish
Number of pages7
Publication statusPublished - 11 Oct 2016
EventGreener Aviation 2016: Achivements and Perspectives in Clean Sky and Worldwide -
Duration: 11 Oct 201613 Oct 2016
http://www.greener-aviation2016.com/

Conference

ConferenceGreener Aviation 2016
Period11/10/1613/10/16
Internet address

Keywords

  • Active flow control
  • turbulent boundary layer
  • suction
  • blowing
  • sweeping jet
  • trailing edge noise

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