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The Performance of a Spectral Wave Model at Predicting Wave Farm Impacts

Author

Listed:
  • J. Cameron McNatt

    (Mocean Energy, Edinburgh EH9 3BF, UK)

  • Aaron Porter

    (Mott MacDonald, Seattle, WA 98101, USA)

  • Christopher Chartrand

    (Sandia National Laboratories, Albuquerque, NM 87185, USA)

  • Jesse Roberts

    (Sandia National Laboratories, Albuquerque, NM 87185, USA)

Abstract

For renewable ocean wave energy to support global energy demands, wave energy converters (WECs) will likely be deployed in large numbers (farms), which will necessarily change the nearshore environment. Wave farm induced changes can be both helpful (e.g., beneficial habitat and coastal protection) and potentially harmful (e.g., degraded habitat, recreational, and commercial use) to existing users of the coastal environment. It is essential to estimate this impact through modeling prior to the development of a farm, and to that end, many researchers have used spectral wave models, such as Simulating WAves Nearshore (SWAN), to assess wave farm impacts. However, the validity of the approaches used within SWAN have not been thoroughly verified or validated. Herein, a version of SWAN, called Sandia National Laboratories (SNL)-SWAN, which has a specialized WEC implementation, is verified by comparing its wave field outputs to those of linear wave interaction theory (LWIT), where LWIT is theoretically more appropriate for modeling wave-body interactions and wave field effects. The focus is on medium-sized arrays of 27 WECs, wave periods, and directional spreading representative of likely conditions, as well as the impact on the nearshore. A quantitative metric, the Mean Squared Skill Score, is used. Results show that the performance of SNL-SWAN as compared to LWIT is “Good” to “Excellent”.

Suggested Citation

  • J. Cameron McNatt & Aaron Porter & Christopher Chartrand & Jesse Roberts, 2020. "The Performance of a Spectral Wave Model at Predicting Wave Farm Impacts," Energies, MDPI, vol. 13(21), pages 1-17, November.
  • Handle: RePEc:gam:jeners:v:13:y:2020:i:21:p:5728-:d:438835
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    References listed on IDEAS

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    Cited by:

    1. Xiaohui Zeng & Qi Wang & Yuanshun Kang & Fajun Yu, 2022. "A Novel Type of Wave Energy Converter with Five Degrees of Freedom and Preliminary Investigations on Power-Generating Capacity," Energies, MDPI, vol. 15(9), pages 1-20, April.
    2. José Miguel Rodrigues, 2021. "A Procedure to Calculate First-Order Wave-Structure Interaction Loads in Wave Farms and Other Multi-Body Structures Subjected to Inhomogeneous Waves," Energies, MDPI, vol. 14(6), pages 1-21, March.

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