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

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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.
Original languageEnglish
Number of pages2
Publication statusPublished - 7 Nov 2019
EventSixteenth International Conference on Flow Dynamics - Tohoku University , Sendai, Japan
Duration: 6 Nov 20198 Nov 2019
Conference number: 16th
http://www.ifs.tohoku.ac.jp/

Conference

ConferenceSixteenth International Conference on Flow Dynamics
Abbreviated titleICFD-2019
CountryJapan
CitySendai
Period6/11/198/11/19
Internet address

Keywords

  • rapid-distortion theory
  • low speed jets
  • turbulence

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