Abstract
In this study the focus is made on the properties of the bistable flow between two cylinder in tandem for a pitch ratio \(L/D = 3.7\) at a Reynolds number of 132,800. Time resolved particle image velocimetry (TRPIV) is used to measure the spatial distribution and time fluctuations of the velocity field in the wake of the upstream cylinder. From velocity spectra and statistics fields, the existence of two distinct seemingly stable flow patterns is shown, having different spatial structures and predominant frequencies.
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Acknowledgments
This work has been carried out in the research group EMT2 (Ecoulements Monophasiques, Transitionnels et Turbulents) of the Institut de Mécanique des Fluides de Toulouse. It is based on the collaborative efforts of Sébastien Cazin, Moise Marshal, Hervé Ayroles and Christophe Korbuly for the experiments set up and the measurements techniques. Authors thank Alain Sevrain for useful discussions. This work has been carried out in the context of the ANR-BARESAFE -“Simulation of Safety Bareer reliability”, coordinated by EDF, Electricité de France.
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Elhimer, M., Harran, G., Deloze, T., Szubert, D., Hoarau, Y., Braza, M. (2016). Naturally Separated Turbulent Flow Around Two Cylinders in Tandem at High Reynolds Number by Time-Resolved PIV. In: Braza, M., Bottaro, A., Thompson, M. (eds) Advances in Fluid-Structure Interaction. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 133. Springer, Cham. https://doi.org/10.1007/978-3-319-27386-0_4
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DOI: https://doi.org/10.1007/978-3-319-27386-0_4
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