Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session D06: Energy Harvesting and Power Generation II
2:30 PM–4:40 PM,
Sunday, November 18, 2018
Georgia World Congress Center Room: B208
Chair: Kiran Bhaganagar, University of Texas at San Antonio
Abstract ID: BAPS.2018.DFD.D06.10
Abstract: D06.00010 : Optimal Mechanical Properties for Energy Extraction from Plates Subjected to Discrete Vortex Loading*
4:27 PM–4:40 PM
Katelyn M. Clemons
(Potsdam Central High School)
Sean D. Peterson
(University of Waterloo)
The optimization of energy extraction from coherent vortical structures using flexible membranes is a subject of interest in recent work. The focus of this study is to find the optimal properties of a plate that, when subjected to a discrete vortex passing tangentially over it, maximizes the plate strain energy. Vortex rings are generated with Re≈4300 and the vortex to plate spacing is varied. The plate mechanical properties are expressed in terms of a non-dimensional mass parameter (Πm), and a Strouhal number (St), where the St number expresses the duration of pressure loading relative to the period of plate oscillation. It is hypothesized that a St≈0.5 will optimize the fluid to plate energy transfer. Four sets of plates with mass parameters that span the range of 3<Πm<11 are investigated for Strouhal numbers that span the range of 0.2<St<1.0. It is observed that the energy transfer is optimized for St≈0.5, and that this value is largely insensitive to the plate mass parameter and vortex/plate separation distance. The results are applicable to predictive energy harvesting design efforts.
*Supported by the National Science Foundation (NSF) under grant No. CBET-1511761, and the Natural Sciences and Engineering Research Council of Canada (NSERC) under grant No. 05778-2015.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.D06.10
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