Direct Scaling of Measure on Vortex Shedding through a Flapping Flag Device in the Open Channel around a Cylinder at <i>Re</i>∼10<sup>3</sup>: Taylor’s Law Approach
Samuele De Bartolo,
Massimo De Vittorio,
Antonio Francone,
Francesco Guido,
Elisa Leone,
Vincenzo Mariano Mastronardi,
Andrea Notaro,
Giuseppe Roberto Tomasicchio
Affiliations
Samuele De Bartolo
Department of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, Italy
Massimo De Vittorio
Department of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, Italy
Antonio Francone
Department of Civil, Environmental, Land, Construction and Chemistry Engineering, Polytechnic of Bari, Via Edoardo Orabona 4, 70125 Bari, Italy
Francesco Guido
Center for Biomolecular Nanotechnologies (CBN), Italian Institute of Technology (IIT), Via Barsanti 14, 73100 Lecce, Italy
Elisa Leone
Department of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, Italy
Vincenzo Mariano Mastronardi
Center for Biomolecular Nanotechnologies (CBN), Italian Institute of Technology (IIT), Via Barsanti 14, 73100 Lecce, Italy
Andrea Notaro
Department of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, Italy
Giuseppe Roberto Tomasicchio
Department of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, Italy
The problem of vortex shedding, which occurs when an obstacle is placed in a regular flow, is governed by Reynolds and Strouhal numbers, known by dimensional analysis. The present work aims to propose a thin films-based device, consisting of an elastic piezoelectric flapping flag clamped at one end, in order to determine the frequency of vortex shedding downstream an obstacle for a flow field at Reynolds number Re∼103 in the open channel. For these values, Strouhal number obtained in such way is in accordance with the results known in literature. Moreover, the development of the voltage over time, generated by the flapping flag under the load due to flow field, shows a highly fluctuating behavior and satisfies Taylor’s law, observed in several complex systems. This provided useful information about the flow field through the constitutive law of the device.
