Trailing-edge noise prediction using the non-linear disturbance equations

Monica D. Christiansen, Philip J. Morris, Kenneth S. Brentner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Currently, the methods available for wind turbine noise prediction are either based on empirical data or require unrealistic computational costs. Although these methods are very valuable, a computationally efficient tool that is based on first principles is needed. The present research proposes a hybrid computational aeroacoustics approach for predicting turbulent-boundary-layer, trailing-edge (TBL-TE) noise. TBL-TE is of interest because it is a dominant source in the total broadband spectrum of wind turbine aerodynamic noise. The proposed method solves the Non-Linear Disturbance Equations (NLDE) for the unsteady flow field in the vicinity of the airfoil trailing edge, reducing computational time. Then, to calculate the noise radiated to a far-field location, the solution from the NLDE is saved and passed to the aeroacoustics propagation code, PSU-WOPWOP. Recent progress with the development of the NLDE flow solver, TANDEM (Turbulence And Noise using the Disturbance Equation Method) is presented. A qualitative assessment of this progress shows promising results. However, the complete noise prediction method is still in the development stage and is not fully validated in this work.

Original languageEnglish (US)
Title of host publication17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)
StatePublished - Dec 1 2011
Event17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference) - Portland, OR, United States
Duration: Jun 5 2011Jun 8 2011

Publication series

Name17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)

Other

Other17th AIAA/CEAS Aeroacoustics Conference 2011 (32nd AIAA Aeroacoustics Conference)
CountryUnited States
CityPortland, OR
Period6/5/116/8/11

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

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