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Vortex induced vibration energy extraction modeling via forced versus free vibration
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. Florida State Univ, Dept Math, Tallahassee, FL, USA.
2017 (English)In: Proceedings Of Oceans 2017 - Aberdeen, IEEE, 2017Conference paper, Published paper (Refereed)
Abstract [en]

Vortex induced vibrations (VIV) for energy extraction have been revisited in last years by both marine power and wind power communities. Even though vortex induced vibrations have been focus of research for many years, energy extraction from vortex induced vibrations is relevantly new field which needs more detailed investigation and modeling. To this end, there has been recent experimental and modeling parametric studies where VIV was modeled by solution of one-degree-of-freedom ordinary differential equation spring system where engineering modeling of vortex induced vibration for energy extraction has been investigated based on a spring system with the forces defined from forced oscillation experiments where full coupling of free oscillations were not taken into account. Herein a Computational Fluid Dynamics (CFD) modeling of a circular cylinder will be studied to compare forced and free vibrations in the context of vortex-induced energy extraction. The model is essentially solved by partial differential isothermal incompressible Navier-Stokes equations to model fully mathematical model of the fluid-structure interaction of vortex induced vibration. The comparison between forced and free oscillation response studies of this paper will serve to improve the scientific knowledge where vortex induced vibration modeling are comparatively more limited. The preliminary results are presented herein for forced and free oscillations for the Reynolds number regimes Re = 100 and Re = 3800 in two dimensions for combinations of amplitudes and frequency of oscillations in the context of energy extraction modeling.

Place, publisher, year, edition, pages
IEEE, 2017.
Keywords [en]
Navier-Stokes equations, computational fluid dynamics, partial differential equations, shapes (structures), turbulence, vibrations, vortices, CFD, Reynolds number, circular cylinder, fluid-structure interaction, forced oscillation, free oscillation response studies, free vibration, isothermal incompressible Navier-Stokes equations, ordinary differential equation, partial differential, spring system, vortex-induced energy extraction, Computational modeling, Energy exchange, Force, Mathematical model, Numerical models, Oscillators
National Category
Electrical Engineering, Electronic Engineering, Information Engineering Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:uu:diva-336513DOI: 10.1109/OCEANSE.2017.8084724ISI: 000426997000155ISBN: 978-1-5090-5279-0 (print)ISBN: 978-1-5090-5278-3 (electronic)ISBN: 978-1-5386-2111-0 OAI: oai:DiVA.org:uu-336513DiVA, id: diva2:1166083
Conference
Oceans 2017 - Aberdeen, 19-22 June, 2017, Aberdeen, UK.
Available from: 2017-12-14 Created: 2017-12-14 Last updated: 2018-07-30Bibliographically approved

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Aihara, AyaUzunoğlu, Bahri

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