Abstract
Our study is focused on the singing risers phenomenon which is encountered in corrugated channels under flow. Internal corrugations are responsible for flow instabilities that synchronize with longitudinal acoustic modes of the channel giving powerful pure tones. Experiments are performed in a specifically designed facility. Numerical simulations of the flow based on a lattice Boltzmann method (LBM) are faced to the experimental results. They aimed at investigating the ability of a LBM based simulation to predict the aeroacoustics of corrugated channels. Acoustic modes and turbulence in the corrugated channel are quite well predicted except the sound pressure levels that need better description of the acoustic boundary conditions.
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Acknowledgements
The work presented herein is sponsored by TOTAL and granted access to the HPC resources of Aix Marseille Université financed by the project Equip@Meso (ANR-10-EQPX-29-01) of the program “Investissements d’Avenir” supervised by the ANR.
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Galeron, G., Mazzoni, D., Amielh, M., Mattei, P.O., Anselmet, F. (2018). Experimental and Numerical Investigations of the Aeroacoustics in a Corrugated Pipe Flow. In: Deville, M., et al. Turbulence and Interactions. TI 2015. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 135. Springer, Cham. https://doi.org/10.1007/978-3-319-60387-2_15
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DOI: https://doi.org/10.1007/978-3-319-60387-2_15
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