Validation of a Quasi-Linear Numerical Model of a Pitching Wave Energy Converter in Close Proximity to a Fixed Structure

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Abstract

Although linear theory is often used to analyse wave energy devices, it is in many cases too simplistic. Many wave energy converters (WECs) exceed the key linear theory assumption of small amplitudes of motion, and require the inclusion of non-linear forces. A common approach is to use a hybrid frequency-time domain model based on the Cummins equation with hydro-dynamic inputs coming from linear wave theory (Ref. [1]). Published experimental data is sparse (Ref. [2]) and the suitability for the broad variety of WEC technologies has yet to be proven.

This paper focuses on the challenges faced when attempting to validate a numerical model of a WEC using a variety of scaled physical tests in a waveflume. The technology used as a case study in this paper is a pitching WEC in close proximity to a fixed structure. Challenges are presented relating to waveflume effects and obtaining accurate physical input parameters to the numerical model.

Copyright © 2017 by ASME
Original languageEnglish
Title of host publicationProceedings of the ASME 2017 36th International Conference on Ocean, Offshore and Artic Engineering: OMAE2017 : Volume 10: Ocean Renewable Energy
Volume10
PublisherAmerican Society of Mechanical Engineers
Publication date2017
PagesV010T09A020
Article numberOMAE2017-61930
ISBN (Electronic)978-0-7918-5778-6
DOIs
Publication statusPublished - 2017
Event36th International Conference on Ocean, Offshore and Arctic Engineering - Trondheim, Norway
Duration: 25 Jun 201730 Jun 2017
Conference number: 36

Conference

Conference36th International Conference on Ocean, Offshore and Arctic Engineering
Number36
CountryNorway
CityTrondheim
Period25/06/201730/06/2017

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Bibliographical note

The conference paper is presented at the 36th International Conference on Ocean, Offshore and Arctic Engineering - Trondheim, Norway. Follow the DOI link in menu at the top of the record and find this paper in conference proceedings in ASME digital collection.

Keywords

  • Computer simulation
  • Wave energy converters

Cite this

López, M. D. P. H., Thomas, S., & Kramer, M. M. (2017). Validation of a Quasi-Linear Numerical Model of a Pitching Wave Energy Converter in Close Proximity to a Fixed Structure. In Proceedings of the ASME 2017 36th International Conference on Ocean, Offshore and Artic Engineering: OMAE2017: Volume 10: Ocean Renewable Energy (Vol. 10, pp. V010T09A020). [OMAE2017-61930] American Society of Mechanical Engineers. https://doi.org/10.1115/OMAE2017-61930