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

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 hyd...

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Main Authors: Malin Göteman, Jens Engström, Mikael Eriksson, Jan Isberg
Format: Article
Language:English
Published: MDPI AG 2015-12-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/8/12/12394
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author Malin Göteman
Jens Engström
Mikael Eriksson
Jan Isberg
author_facet Malin Göteman
Jens Engström
Mikael Eriksson
Jan Isberg
author_sort Malin Göteman
collection DOAJ
description 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.
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spelling doaj.art-61653a4f1d8840a7b5dbd2e99f3f688b2022-12-22T02:14:49ZengMDPI AGEnergies1996-10732015-12-01812137411375710.3390/en81212394en81212394Fast Modeling of Large Wave Energy Farms Using Interaction Distance Cut-OffMalin Göteman0Jens Engström1Mikael Eriksson2Jan Isberg3Department of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, SwedenDepartment of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, SwedenDepartment of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, SwedenDepartment of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, SwedenIn 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.http://www.mdpi.com/1996-1073/8/12/12394wave energymodelinglarge farmsinteractionsmultiple scattering
spellingShingle Malin Göteman
Jens Engström
Mikael Eriksson
Jan Isberg
Fast Modeling of Large Wave Energy Farms Using Interaction Distance Cut-Off
Energies
wave energy
modeling
large farms
interactions
multiple scattering
title Fast Modeling of Large Wave Energy Farms Using Interaction Distance Cut-Off
title_full Fast Modeling of Large Wave Energy Farms Using Interaction Distance Cut-Off
title_fullStr Fast Modeling of Large Wave Energy Farms Using Interaction Distance Cut-Off
title_full_unstemmed Fast Modeling of Large Wave Energy Farms Using Interaction Distance Cut-Off
title_short Fast Modeling of Large Wave Energy Farms Using Interaction Distance Cut-Off
title_sort fast modeling of large wave energy farms using interaction distance cut off
topic wave energy
modeling
large farms
interactions
multiple scattering
url http://www.mdpi.com/1996-1073/8/12/12394
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AT mikaeleriksson fastmodelingoflargewaveenergyfarmsusinginteractiondistancecutoff
AT janisberg fastmodelingoflargewaveenergyfarmsusinginteractiondistancecutoff