Improved predictions of trailing-edge noise using rapid-distortion theory and CFD data

Afsar, Mohammed (2019) Improved predictions of trailing-edge noise using rapid-distortion theory and CFD data. In: Sixteenth International Conference on Flow Dynamics, 2019-11-06 - 2019-11-08, Tohoku University.

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Abstract

We show the effect of correcting the acoustic spectrum formula for a high speed jet interacting with a trailing edge of a semi-infinite flat plate derived by Goldstein et al., (2017, J Fluid Mech. vol. 824, p. 477) using the Rapid-distortion theory (RDT). The correction involves using the next order term for the amplitude function in the WKBJ approximation for the scattered pressure. The high frequency roll-off of the acoustic spectrum predictions that we obtain using this correction are closer to experiment for low speed jets. In the talk we will discuss the role of using CFD data in the model.

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• Item metadata

  Item type:	Conference or Workshop Item(Other)
  ID code:	70725
  Dates:	Date Event 7 November 2019 Published 7 August 2019 Accepted
  Subjects:	Technology > Motor vehicles. Aeronautics. Astronautics
  Department:	Faculty of Engineering > Mechanical and Aerospace Engineering Strategic Research Themes > Ocean, Air and Space
  Depositing user:	Pure Administrator
  Date deposited:	06 Dec 2019 13:54
  Last modified:	24 Apr 2024 00:34
  Related URLs:	Event
  URI:	https://strathprints.strath.ac.uk/id/eprint/70725