Vibration Performance of a Flow Energy Converter behind Two Side-By-Side Cylinders
Flow-induced vibrations of a flexible cantilever plate, placed in various positions behind two side-by-side cylinders, were computationally investigated to determine optimal location for wake-excited energy harvesters. In the present study, the cylinders of equal diameter D were fixed at center-to-c...
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| Veröffentlicht in: | Journal of marine science and engineering 2019-12, Vol.7 (12), p.435 |
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| creator | Rasani, Mohammad Rasidi Moria, Hazim Beer, Michael Ariffin, Ahmad Kamal |
| description | Flow-induced vibrations of a flexible cantilever plate, placed in various positions behind two side-by-side cylinders, were computationally investigated to determine optimal location for wake-excited energy harvesters. In the present study, the cylinders of equal diameter D were fixed at center-to-center gap ratio of T / D = 1.7 and immersed in sub-critical flow of Reynold number R e D = 10 , 000 . A three-dimensional Navier–Stokes flow solver in an Arbitrary Lagrangian–Eulerian (ALE) description was closely coupled to a non-linear finite element structural solver that was used to model the dynamics of a composite piezoelectric plate. The cantilever plate was fixed at several positions between 0.5 < x / D < 1.5 and − 0.85 < y / D < 0.85 measured from the center gap between cylinders, and their flow-induced oscillations were compiled and analyzed. The results indicate that flexible plates located at the centerline between the cylinder pairs experience the lowest mean amplitude of oscillation. Maximum overall amplitude in oscillation is predicted when flexible plates are located in the intermediate off-center region downstream of both cylinders. Present findings indicate potential to further maximize wake-induced energy harvesting plates by exploiting their favorable positioning in the wake region behind two side-by-side cylinders. |
| doi_str_mv | 10.3390/jmse7120435 |
| format | Article |
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In the present study, the cylinders of equal diameter D were fixed at center-to-center gap ratio of T / D = 1.7 and immersed in sub-critical flow of Reynold number R e D = 10 , 000 . A three-dimensional Navier–Stokes flow solver in an Arbitrary Lagrangian–Eulerian (ALE) description was closely coupled to a non-linear finite element structural solver that was used to model the dynamics of a composite piezoelectric plate. The cantilever plate was fixed at several positions between 0.5 < x / D < 1.5 and − 0.85 < y / D < 0.85 measured from the center gap between cylinders, and their flow-induced oscillations were compiled and analyzed. The results indicate that flexible plates located at the centerline between the cylinder pairs experience the lowest mean amplitude of oscillation. Maximum overall amplitude in oscillation is predicted when flexible plates are located in the intermediate off-center region downstream of both cylinders. Present findings indicate potential to further maximize wake-induced energy harvesting plates by exploiting their favorable positioning in the wake region behind two side-by-side cylinders.</description><identifier>ISSN: 2077-1312</identifier><identifier>EISSN: 2077-1312</identifier><identifier>DOI: 10.3390/jmse7120435</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Amplitude ; Amplitudes ; Cantilever plates ; Computational fluid dynamics ; Converters ; Critical flow ; Cylinders ; Diameters ; Energy ; Energy harvesting ; Flow generated vibrations ; Investigations ; Oscillations ; Piezoelectricity ; Reynolds number ; Shear stress ; Solvers ; Stokes flow ; Subcritical flow ; Three dimensional flow ; Turbulence models ; Velocity ; Vibration ; Vibrations ; Viscosity ; Vortices</subject><ispartof>Journal of marine science and engineering, 2019-12, Vol.7 (12), p.435</ispartof><rights>2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). 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In the present study, the cylinders of equal diameter D were fixed at center-to-center gap ratio of T / D = 1.7 and immersed in sub-critical flow of Reynold number R e D = 10 , 000 . A three-dimensional Navier–Stokes flow solver in an Arbitrary Lagrangian–Eulerian (ALE) description was closely coupled to a non-linear finite element structural solver that was used to model the dynamics of a composite piezoelectric plate. The cantilever plate was fixed at several positions between 0.5 < x / D < 1.5 and − 0.85 < y / D < 0.85 measured from the center gap between cylinders, and their flow-induced oscillations were compiled and analyzed. The results indicate that flexible plates located at the centerline between the cylinder pairs experience the lowest mean amplitude of oscillation. Maximum overall amplitude in oscillation is predicted when flexible plates are located in the intermediate off-center region downstream of both cylinders. 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| subjects | Amplitude Amplitudes Cantilever plates Computational fluid dynamics Converters Critical flow Cylinders Diameters Energy Energy harvesting Flow generated vibrations Investigations Oscillations Piezoelectricity Reynolds number Shear stress Solvers Stokes flow Subcritical flow Three dimensional flow Turbulence models Velocity Vibration Vibrations Viscosity Vortices |
| title | Vibration Performance of a Flow Energy Converter behind Two Side-By-Side Cylinders |
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