Ocean power technology design optimization

doi:10.1016/j.ijome.2017.07.010

Title: Ocean power technology design optimization

Article Details
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For this study, the National Renewable Energy Laboratory and Ocean Power Technologies (OPT) conducted a collaborative code validation and design optimization study for OPT's PowerBuoy wave energy converter (WEC). NREL utilized WEC-Sim, an open-source WEC simulator, to compare four design variations of OPT's PowerBuoy. As an input to the WEC-Sim models, viscous drag coefficients for the PowerBuoy floats were first evaluated using computational fluid dynamics. The resulting WEC-Sim PowerBuoy models were then validated with experimental power output and fatigue load data provided by OPT. The validated WEC-Sim models were then used to simulate the power performance and loads for operational conditions, extreme conditions, and directional waves, for each of the four PowerBuoy design variations, assuming the wave environment of Humboldt Bay, California. And finally, ratios of power-to-weight, power-to-fatigue-load, power-to-maximum-extreme-load, power-to-water-plane-area, and power-to-wetted-surface-area were used to make a final comparison of the potential PowerBuoy WEC designs. Lastly, the design comparison methodologies developed and presented in this study are applicable to other WEC devices and may be useful as a framework for future WEC design development projects.

Authors:

; Yu, Yi -Hsiang ^[1] ; Edwards, Kathleen ^[2] ; Mekhiche, Mike ^[2]

National Renewable Energy Lab. (NREL), Golden, CO (United States)
Ocean Power Technologies, Pennington, NJ (United States)

Publication Date:: 2017-07-18

Report Number(s):: NREL/JA-5000-68074
Journal ID: ISSN 2214-1669

Grant/Contract Number:: AC36-08GO28308

Type:: Accepted Manuscript

Journal Name:: International Journal of Marine Energy

Additional Journal Information:: Journal Volume: 20; Journal ID: ISSN 2214-1669

Publisher:: Elsevier

Research Org:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Water Power Technologies Office (EE-4WP)

Country of Publication:: United States

Language:: English

Subject:: 16 TIDAL AND WAVE POWER; wave energy converter; extreme condition modeling; computational fluid dynamics; design loads

OSTI Identifier:: 1395480


                    van Rij, Jennifer, Yu, Yi -Hsiang, Edwards, Kathleen, and Mekhiche, Mike. Ocean power technology design optimization.  United States: N. p.,  
        Web.  doi:10.1016/j.ijome.2017.07.010.

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                    van Rij, Jennifer, Yu, Yi -Hsiang, Edwards, Kathleen, & Mekhiche, Mike. Ocean power technology design optimization.  United States.  doi:10.1016/j.ijome.2017.07.010.

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                    van Rij, Jennifer, Yu, Yi -Hsiang, Edwards, Kathleen, and Mekhiche, Mike. 2017.  
        "Ocean power technology design optimization".  United States.  
        doi:10.1016/j.ijome.2017.07.010.  https://www.osti.gov/servlets/purl/1395480.

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@article{osti_1395480,

  title        = {Ocean power technology design optimization},

  author       = {van Rij, Jennifer and Yu, Yi -Hsiang and Edwards, Kathleen and Mekhiche, Mike},

  abstractNote = {For this study, the National Renewable Energy Laboratory and Ocean Power Technologies (OPT) conducted a collaborative code validation and design optimization study for OPT's PowerBuoy wave energy converter (WEC). NREL utilized WEC-Sim, an open-source WEC simulator, to compare four design variations of OPT's PowerBuoy. As an input to the WEC-Sim models, viscous drag coefficients for the PowerBuoy floats were first evaluated using computational fluid dynamics. The resulting WEC-Sim PowerBuoy models were then validated with experimental power output and fatigue load data provided by OPT. The validated WEC-Sim models were then used to simulate the power performance and loads for operational conditions, extreme conditions, and directional waves, for each of the four PowerBuoy design variations, assuming the wave environment of Humboldt Bay, California. And finally, ratios of power-to-weight, power-to-fatigue-load, power-to-maximum-extreme-load, power-to-water-plane-area, and power-to-wetted-surface-area were used to make a final comparison of the potential PowerBuoy WEC designs. Lastly, the design comparison methodologies developed and presented in this study are applicable to other WEC devices and may be useful as a framework for future WEC design development projects.},

  doi          = {10.1016/j.ijome.2017.07.010},

  journal      = {International Journal of Marine Energy},

  number       = ,

  volume       = 20,

  place        = {United States},

  year         = {2017},

  month        = {7}

}

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Free Publicly Accessible Full Text
Accepted Manuscript (DOE)
Publisher's Version of Record
10.1016/j.ijome.2017.07.010
https://doi.org/10.1016/j.ijome.2017.07.010

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Title: Ocean power technology design optimization

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