Computational aeroacoustic analysis of trailing edge noise

A Direct Numerical Simulation using the Lattice Boltzmann Method

Master thesis (2016)

Authors

Contributors

A.H. van Zuijlen (mentor)
Department
Aerodynamics (Aerospace Engineering) (TU Delft)
Copyright: © 2016 Rooks, J.J.W.
Noise reduction Trailing edge noise Lattice Boltzmann method Computational aeroacoustics Trailing edge serrations
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Published Date

17-08-2016

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Faculty

Aerospace Engineering

Department

Aerodynamics

Abstract

To investigate the mechanisms of wing trailing edge noise the aeroacoustic sound generation by a NACA 0018 has been computed with direct numerical simulations using the Lattice Boltzmann Method. Noise from the straight trailing edge wing is compared with the sound generated by a sawtooth serrated wing, which reduces the noise emission according to literature. It was found that for low frequencies the trailing edge serrations reduce the noise significantly, but show a limited (negative) effect at high frequencies.