Please use this identifier to cite or link to this item:
Title: Flutter Phenomenon in Flow Driven Energy Harvester-A Unified Theoretical Model for "stiff" and "flexible" Materials
Authors: Chen Y.
Mu X.
Wang T. 
Ren W.
Yang Y.
Wang Z.L.
Sun C.
Gu A.Y.
Issue Date: 2016
Citation: Chen Y., Mu X., Wang T., Ren W., Yang Y., Wang Z.L., Sun C., Gu A.Y. (2016). Flutter Phenomenon in Flow Driven Energy Harvester-A Unified Theoretical Model for "stiff" and "flexible" Materials. Scientific Reports 6 : 35180. ScholarBank@NUS Repository.
Abstract: Here, we report a stable and predictable aero-elastic motion in the flow-driven energy harvester, which is different from flapping and vortex-induced-vibration (VIV). A unified theoretical frame work that describes the flutter phenomenon observed in both "stiff" and "flexible" materials for flow driven energy harvester was presented in this work. We prove flutter in both types of materials is the results of the coupled effects of torsional and bending modes. Compared to "stiff" materials, which has a flow velocity-independent flutter frequency, flexible material presents a flutter frequency that almost linearly scales with the flow velocity. Specific to "flexible" materials, pre-stress modulates the frequency range in which flutter occurs. It is experimentally observed that a double-clamped "flexible" piezoelectric P(VDF-TrFE) thin belt, when driven into the flutter state, yields a 1,000 times increase in the output voltage compared to that of the non-fluttered state. At a fixed flow velocity, increase in pre-stress level of the P(VDF-TrFE) thin belt up-shifts the flutter frequency. In addition, this work allows the rational design of flexible piezoelectric devices, including flow-driven energy harvester, triboelectric energy harvester, and self-powered wireless flow speed sensor. © 2016 The Author(s).
Source Title: Scientific Reports
ISSN: 20452322
DOI: 10.1038/srep35180
Appears in Collections:Elements
Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1038_srep35180.pdf4.31 MBAdobe PDF




checked on Sep 30, 2022

Page view(s)

checked on Sep 22, 2022

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.