TY - JOUR

T1 - Vibration Performance of a Flow Energy Converter behind Two Side-By-Side Cylinders

AU - Rasidi Rasani, Mohammad

AU - Moria, Hazim

AU - Beer, Michael

AU - Kamal Ariffin, Ahmad

N1 - Funding information: Acknowledgments: This work was supported by EU H2020 Marie Curie RISE project No. 730888 (ReSET). All types of support from Leibniz University Hannover and Universiti Kebangsaan Malaysia are gratefully acknowledged. Special thanks to Klaus Burwitz (Leibniz University Hannover) for all his assistance. This project received funding from the European Union Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 730888. This work was supported by EU H2020 Marie Curie RISE project No. 730888 (ReSET). All types of support from Leibniz University Hannover and Universiti Kebangsaan Malaysia are gratefully acknowledged. Special thanks to Klaus Burwitz (Leibniz University Hannover) for all his assistance. Funding: This project received funding from the European Union Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 730888.

PY - 2019/12

Y1 - 2019/12

N2 - 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 ReD = 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.

AB - 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 ReD = 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.

KW - Energy harvesting

KW - Fluid-structure interaction

KW - Side-by-side cylinders

KW - Vortex shedding

KW - Wake interference

UR - http://www.scopus.com/inward/record.url?scp=85079754125&partnerID=8YFLogxK

U2 - 10.3390/JMSE7120435

DO - 10.3390/JMSE7120435

M3 - Article

AN - SCOPUS:85079754125

VL - 7

JO - Journal of Marine Science and Engineering

JF - Journal of Marine Science and Engineering

IS - 12

M1 - 435

ER -