Exploiting bi-stability to enhance energy capture from turbulent flows

Ali H. Alhadidi, Mohammed Daqaq

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    This paper investigates utilizing a nonlinear (bi-stable) restoring force to enhance the transduction of galloping energy harvesters in turbulent flows. To that end, a harvester consisting of a piezoelectric cantilever beam augmented with a squaresectioned bluff body at the free end is considered. Two repulsive magnets located at the tip of the beam are used to introduce the bi-stable restoring force. Turbulence is generated in a wind tunnel using static-grid structures located in the upstream of the bluff body. Three different mesh screens with square bars are designed with different bar and mesh widths to control the Reynolds numbers and associated turbulence intensity. A series of wind tunnel tests are then used to experimentally investigate the response of the harvester with and without the tip magnets. Results demonstrate that the bi-stable restoring force can be used to improve the output power of the harvester for sufficiently large turbulence intensities.

    Original languageEnglish (US)
    Title of host publicationIntegrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting
    PublisherAmerican Society of Mechanical Engineers
    Volume2
    ISBN (Electronic)9780791857304
    DOIs
    StatePublished - Jan 1 2015
    EventASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015 - Colorado Springs, United States
    Duration: Sep 21 2015Sep 23 2015

    Other

    OtherASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015
    CountryUnited States
    CityColorado Springs
    Period9/21/159/23/15

    Fingerprint

    Harvesters
    Turbulent flow
    Turbulence
    Wind tunnels
    Magnets
    Cantilever beams
    Reynolds number

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Control and Systems Engineering
    • Mechanics of Materials
    • Building and Construction

    Cite this

    Alhadidi, A. H., & Daqaq, M. (2015). Exploiting bi-stability to enhance energy capture from turbulent flows. In Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting (Vol. 2). American Society of Mechanical Engineers. https://doi.org/10.1115/SMASIS2015-8953

    Exploiting bi-stability to enhance energy capture from turbulent flows. / Alhadidi, Ali H.; Daqaq, Mohammed.

    Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting. Vol. 2 American Society of Mechanical Engineers, 2015.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Alhadidi, AH & Daqaq, M 2015, Exploiting bi-stability to enhance energy capture from turbulent flows. in Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting. vol. 2, American Society of Mechanical Engineers, ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015, Colorado Springs, United States, 9/21/15. https://doi.org/10.1115/SMASIS2015-8953
    Alhadidi AH, Daqaq M. Exploiting bi-stability to enhance energy capture from turbulent flows. In Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting. Vol. 2. American Society of Mechanical Engineers. 2015 https://doi.org/10.1115/SMASIS2015-8953
    Alhadidi, Ali H. ; Daqaq, Mohammed. / Exploiting bi-stability to enhance energy capture from turbulent flows. Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting. Vol. 2 American Society of Mechanical Engineers, 2015.
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