Simulation-based investigation of foil-turbulence interaction noise
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2020

A simulation-based study is presented for flow noise gen- erated by the interaction of strong inflow turbulence with the leading edge of a NACA 0012 foil. The chord-based Reynolds number is 203,000 and the Mach-number 0.09. Large-eddy simulation is used to compute the sound sources in an acoustic analogy. The inflow turbulence is generated with a synthetic method and the spectral properties of the simulated turbulence, just upstream of the leading edge, are analyzed to ensure that it is sufficiently resolved in the acoustically most interesting frequency range. Results are compared with experiments, both for the deformation of the turbulence at the leading edge and for the radiated sound.

Leading-edge noise

foil

Aeroacoustics

LES

Författare

Mattias Liefvendahl

Totalförsvarets forskningsinstitut (FOI)

Rickard Bensow

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Symposium on Naval Hydrodynamics
Osaka, ,

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Ämneskategorier

Rymd- och flygteknik

Meteorologi och atmosfärforskning

Strömningsmekanik och akustik

Fundament

Grundläggande vetenskaper

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Mer information

Skapat

2020-11-26