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
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,...
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| Format: | Article |
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MDPI AG
2021-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/5/1871 |
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| author | Samuele De Bartolo Massimo De Vittorio Antonio Francone Francesco Guido Elisa Leone Vincenzo Mariano Mastronardi Andrea Notaro Giuseppe Roberto Tomasicchio |
| author_facet | Samuele De Bartolo Massimo De Vittorio Antonio Francone Francesco Guido Elisa Leone Vincenzo Mariano Mastronardi Andrea Notaro Giuseppe Roberto Tomasicchio |
| author_sort | Samuele De Bartolo |
| collection | DOAJ |
| description | 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 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><mi>e</mi><mo>∼</mo><msup><mn>10</mn><mn>3</mn></msup></mrow></semantics></math></inline-formula> 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. |
| first_indexed | 2024-03-09T05:02:48Z |
| format | Article |
| id | doaj.art-41938b3bef8f4eaaa789e534a2f469a5 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T05:02:48Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-41938b3bef8f4eaaa789e534a2f469a52023-12-03T12:57:52ZengMDPI AGSensors1424-82202021-03-01215187110.3390/s21051871Direct 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 ApproachSamuele De Bartolo0Massimo De Vittorio1Antonio Francone2Francesco Guido3Elisa Leone4Vincenzo Mariano Mastronardi5Andrea Notaro6Giuseppe Roberto Tomasicchio7Department of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, ItalyDepartment of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, ItalyDepartment of Civil, Environmental, Land, Construction and Chemistry Engineering, Polytechnic of Bari, Via Edoardo Orabona 4, 70125 Bari, ItalyCenter for Biomolecular Nanotechnologies (CBN), Italian Institute of Technology (IIT), Via Barsanti 14, 73100 Lecce, ItalyDepartment of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, ItalyCenter for Biomolecular Nanotechnologies (CBN), Italian Institute of Technology (IIT), Via Barsanti 14, 73100 Lecce, ItalyDepartment of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, ItalyDepartment of Engineering for Innovation, EUropean Maritime Environmental Research (EUMER), University of Salento, Via per Monteroni, 73100 Lecce, ItalyThe 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 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><mi>e</mi><mo>∼</mo><msup><mn>10</mn><mn>3</mn></msup></mrow></semantics></math></inline-formula> 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.https://www.mdpi.com/1424-8220/21/5/1871sensor technologiessensor systems for water flowhydrodynamics monitoring of rivershydraulicsMEMSfluid–structure interactions |
| spellingShingle | Samuele De Bartolo Massimo De Vittorio Antonio Francone Francesco Guido Elisa Leone Vincenzo Mariano Mastronardi Andrea Notaro Giuseppe Roberto Tomasicchio 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 Sensors sensor technologies sensor systems for water flow hydrodynamics monitoring of rivers hydraulics MEMS fluid–structure interactions |
| title | 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 |
| title_full | 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 |
| title_fullStr | 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 |
| title_full_unstemmed | 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 |
| title_short | 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 |
| title_sort | 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 |
| topic | sensor technologies sensor systems for water flow hydrodynamics monitoring of rivers hydraulics MEMS fluid–structure interactions |
| url | https://www.mdpi.com/1424-8220/21/5/1871 |
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