Fast Modeling of Large Wave Energy Farms Using Interaction Distance Cut-Off

Malin Göteman, Jens Engström, Mikael Eriksson and Jan Isberg
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Malin Göteman: Department of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, Sweden
Jens Engström: Department of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, Sweden
Mikael Eriksson: Department of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, Sweden
Jan Isberg: Department of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, Sweden

Energies, 2015, vol. 8, issue 12, 1-17

Abstract: In many wave energy concepts, power output in the MW range requires the simultaneous operation of many wave energy converters. In particular, this is true for small point-absorbers, where a wave energy farm may contain several hundred devices. The total performance of the farm is affected by the hydrodynamic interactions between the individual devices, and reliable tools that can model full farms are needed to study power output and find optimal design parameters. This paper presents a novel method to model the hydrodynamic interactions and power output of very large wave energy farms. The method is based on analytical multiple scattering theory and uses time series of irregular wave amplitudes to compute the instantaneous power of each device. An interaction distance cut-off is introduced to improve the computational cost with acceptable accuracy. As an application of the method, wave energy farms with over 100 devices are studied in the MW range using one month of wave data measured at an off-shore site.

Keywords: wave energy; modeling; large farms; interactions; multiple scattering (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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