Computational aeroacoustic analysis of trailing edge noise
A Direct Numerical Simulation using the Lattice Boltzmann Method
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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.
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