Wave Energy Extraction by Flexible Floaters

Energies

AntonisI. Vakis¹  Federica Buriani²  Emiliano Renzi²  Simone Michele²  Bayu Jayawardhana³  Marijn van Rooij⁴ 

[1] Computational Mechanical and Materials Engineering, Engineering and Technology Institute Groningen, Faculty of Science & Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands;Department of Mathematical Sciences, Loughborough University, Loughborough LE11 3TU, UK;Discrete Technology and Production Automation, Engineering and Technology Institute Groningen, Faculty of Science & Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands;Ocean Grazer, Zernikepark 12, 9747 AN Groningen, The Netherlands;

关键词: fluid–structure interaction;    floating elastic plate;    wave energy;   

DOI  :  10.3390/en13236167

来源: DOAJ

【 摘 要 】

We present a novel mathematical model to investigate the extraction of wave power by flexible floaters. The model is based on the method of dry modes, coupled with a matched eigenfunction expansion. Our model results compare satisfactorily with preliminary data obtained from a demonstrator device, developed at the University of Groningen. We show that the role of elasticity is to increase the number of resonant frequencies with respect to a rigid body, which has a positive effect on wave power output. The mathematical model is then extended to irregular incident waves, described by a JONSWAP spectrum. Our results show that the peak capture factors decrease in irregular waves, as compared to the monochromatic case. However, the system becomes more efficient at non-resonant frequencies. This work highlights the need to scale-up experimental investigations on flexible wave energy converters, which are still a small minority, compared to those on rigid converters.

【 授权许可】

Unknown