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Communication Dans Un Congrès Année : 2022

Experimental and Numerical Analysis of Whistling in Flows around Side-View Mirrors

Résumé

In the frame of the OpenLab Fluidics@Poitiers, partnership between Institut Pprime and Stellantis, the flow induced whistlings around automotive side-view mirrors are studied by experimental and numerical approaches. Two side-view mirrors that only differ by a step on their caps are analysed at two free stream velocities, 26 and 34 m/s. A previous experimental campaign using hot-wire anemometer and synchronised microphones is compared to the results of a Time Resolved Particle Image Velocimetry (TR-PIV) and synchronised microphone, both undertaken in the anechoic wind tunnel BETI (<i>Bruit-Environnement-Transport-Ingénierie</i>). Moreover, a Reynolds Averaged Navier-Stokes (RANS) simulation is performed using ANSYS Fluent, for each configuration. After extracting a maximum of space-time and space-frequency information from the experimental measurements, an exhaustive comparison of the data generated by the three approaches is undertaken in order to evaluate the capacity of the RANS simulation to reproduce the representative elements of the whistlings. Finally, the RANS fields are particularly analysed in the regions responsible for the whistlings, identified during the synchronised hot-wire anemometer - microphones campaign.
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Dates et versions

hal-03848128 , version 1 (10-11-2022)

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  • HAL Id : hal-03848128 , version 1

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Arnaud Stoffel, Florent Margnat, Christian Prax, François van Herpe. Experimental and Numerical Analysis of Whistling in Flows around Side-View Mirrors. 16ème Congrès Français d'Acoustique, CFA2022, Société Française d'Acoustique; Laboratoire de Mécanique et d'Acoustique, Apr 2022, Marseille, France. ⟨hal-03848128⟩
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