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Open AccessFeature PaperArticle

Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array

1
Pacific Northwest National Laboratory, 1100 Dexter Ave. North, Suite 500, Seattle, WA 98109, USA
2
National Renewable Energy Laboratory, Golden, CO 80401, USA
*
Authors to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2020, 8(3), 171; https://doi.org/10.3390/jmse8030171
Received: 23 January 2020 / Revised: 28 February 2020 / Accepted: 28 February 2020 / Published: 4 March 2020
Industry-specific tools for analyzing and optimizing the design of wave energy converters (WECs) and associated power systems are essential to advancing marine renewable energy. This study aims to quantify the influence of phase information on the device power output of a virtual WEC array. We run the phase-resolving wave model FUNWAVE-TVD (Total Variation Diminishing) to generate directional waves at the PacWave South site offshore from Newport, Oregon, where future WECs are expected to be installed for testing. The two broad cases presented correspond to mean wave climates during warm months (March–August) and cold months (September–February). FUNWAVE-TVD time series of sea-surface elevation are then used in WEC-Sim, a time domain numerical model, to simulate the hydrodynamic response of each device in the array and estimate their power output. For comparison, WEC-Sim is also run with wave energy spectra calculated from the FUNWAVE-TVD simulations, which do not retain phase information, and with wave spectra computed using the phase-averaged model Simulating WAves Nearshore (SWAN). The use of spectral data in WEC-Sim requires a conversion from frequency to time domain by means of random superposition of wave components, which are not necessarily consistent because of the linear assumption implicit in this method. Thus, power response is characterized by multiple realizations of the wave climates. View Full-Text
Keywords: wave energy converter; numerical modeling; WEC-Sim; FUNWAVE-TVD; SWAN; PacWave South wave energy converter; numerical modeling; WEC-Sim; FUNWAVE-TVD; SWAN; PacWave South
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MDPI and ACS Style

Ticona Rollano, F.; Tran, T.T.; Yu, Y.-H.; García-Medina, G.; Yang, Z. Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array. J. Mar. Sci. Eng. 2020, 8, 171.

AMA Style

Ticona Rollano F, Tran TT, Yu Y-H, García-Medina G, Yang Z. Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array. Journal of Marine Science and Engineering. 2020; 8(3):171.

Chicago/Turabian Style

Ticona Rollano, Fadia; Tran, Thanh T.; Yu, Yi-Hsiang; García-Medina, Gabriel; Yang, Zhaoqing. 2020. "Influence of Time and Frequency Domain Wave Forcing on the Power Estimation of a Wave Energy Converter Array" J. Mar. Sci. Eng. 8, no. 3: 171.

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