Publication: Karman vortex creation using cylinder for flutter energy harvester device
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Date
2017
Authors
Atrah A.B.
Ab-Rahman M.S.
Salleh H.
Nuawi M.Z.
Nor M.J.M.
Jamaludin N.B.
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI AG
Abstract
This study presents the creation of a Karman vortex for a fluttering electromagnetic energy harvester device using a cylinder. The effects of two parameters, which are the diameter and the position of the cylinder, were investigated on the Karman vortex profile and the amplitude of the fluttering belt, respectively. A simulation was conducted to determine the effect of the creation of the Karman vortex, and an experiment was performed to identify influence of the position of the cylinder on the fluttering belt amplitude. The results demonstrated that vortex-induced vibration occurred at the frequency of the first natural mode for the belt at 3 cm and 10 cm for the diameter and position of the cylinder, respectively. Under such configuration, an electromagnetic energy harvester was attached and vibrated via the fluttering belt inside the turbulent boundary layers. This vibration provides a measured output voltage and can be used in wireless sensors. � 2017 by the authors. Licensee MDPI, Basel, Switzerland.
Description
Cylinders (shapes); Electromagnetic waves; Energy harvesting; Flutter (aerodynamics); Turbulent flow; Wind power; Aerodynamic flutter; Bluff body; Energy Harvester; First natural modes; Karman vortices; Turbulent boundary layers; Vortex induced vibration; Wireless sensor; Vortex flow