Abstract
A self-synchronized phase averaging has been applied to unconditional acquired, time resolved PIV velocity fields to analyze the unsteady flow in the base region of a rectangular cylinder immersed in a free surface water flow. The implemented phase averaging technique does not need any external reference signal and it allowed to reconstruct a complete cycle of the evolutionary mechanism of alternate vortex shedding from the trailing edges of the cylinder. The obtained phase-averaged flow fields showed a good description of the vortex shedding process; a quantitative description of the wake evolution have been made by means of topological analysis of the phase averaged velocity fields.
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Negri, M., Cozzi, F. & Malavasi, S. Self-synchronized phase averaging of PIV measurements in the base region of a rectangular cylinder. Meccanica 46, 423–435 (2011). https://doi.org/10.1007/s11012-010-9323-y
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DOI: https://doi.org/10.1007/s11012-010-9323-y