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Title: CFD design-load analysis of a two-body wave energy converter

Abstract

Wave energy converters (WECs) must survive in a wide variety of conditions while minimizing structural costs, so as to deliver power at cost-competitive rates. Although engineering design and analysis tools used for other ocean systems, such as offshore structures and ships, can be applied, the unique nature and limited historical experience of WEC design necessitates assessment of the effectiveness of these methods for this specific application. This paper details a study to predict extreme loading in a two-body WEC using a combination of mid-fidelity and high-fidelity numerical modeling tools. The mid-fidelity approach is a time-domain model based on linearized potential flow hydrodynamics and the high-fidelity modeling tool is an unsteady Reynolds-averaged Navier–Stokes model. In both models, the dynamics of the WEC power take-off and mooring system have been included. For the high-fidelity model, two design wave approaches (an equivalent regular wave and a focused wave) are used to estimate the worst case wave forcing within a realistic irregular sea state. These simplified design wave approaches aim to capture the extreme response of the WEC within a feasible amount of computational effort. When compared to the mid-fidelity model results in a long-duration irregular sea, the short-duration design waves simulated in CFDmore » produce upper percentile load responses, hinting at the suitability of these two approaches.« less

Authors:
ORCiD logo [1];  [2];  [3];  [1];  [3];  [3];  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Oscilla Power, Inc., Seattle, WA (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Oscilla Power, Inc., Seattle, WA (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Water Power Technologies Office (EE-4WP); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind Energy Technologies Office (EE-4WE); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
OSTI Identifier:
1515194
Alternate Identifier(s):
OSTI ID: 1525306
Report Number(s):
SAND-2019-4731J; NREL/JA-5000-72447
Journal ID: ISSN 2198-6444; 675051
Grant/Contract Number:  
NA0003525; EE0007346; AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Ocean Engineering and Marine Energy
Additional Journal Information:
Journal Name: Journal of Ocean Engineering and Marine Energy; Journal ID: ISSN 2198-6444
Publisher:
Springer International Publishing
Country of Publication:
United States
Language:
English
Subject:
16 TIDAL AND WAVE POWER; wave energy converter (WEC); extreme; survival; design load; CFD; wave energy converter; WEC

Citation Formats

Coe, Ryan G., Rosenberg, Brian J., Quon, Eliot W., Chartrand, Chris C., Yu, Yi-Hsiang, van Rij, Jennifer, and Mundon, Tim R. CFD design-load analysis of a two-body wave energy converter. United States: N. p., 2019. Web. doi:10.1007/s40722-019-00129-8.
Coe, Ryan G., Rosenberg, Brian J., Quon, Eliot W., Chartrand, Chris C., Yu, Yi-Hsiang, van Rij, Jennifer, & Mundon, Tim R. CFD design-load analysis of a two-body wave energy converter. United States. doi:10.1007/s40722-019-00129-8.
Coe, Ryan G., Rosenberg, Brian J., Quon, Eliot W., Chartrand, Chris C., Yu, Yi-Hsiang, van Rij, Jennifer, and Mundon, Tim R. Tue . "CFD design-load analysis of a two-body wave energy converter". United States. doi:10.1007/s40722-019-00129-8.
@article{osti_1515194,
title = {CFD design-load analysis of a two-body wave energy converter},
author = {Coe, Ryan G. and Rosenberg, Brian J. and Quon, Eliot W. and Chartrand, Chris C. and Yu, Yi-Hsiang and van Rij, Jennifer and Mundon, Tim R.},
abstractNote = {Wave energy converters (WECs) must survive in a wide variety of conditions while minimizing structural costs, so as to deliver power at cost-competitive rates. Although engineering design and analysis tools used for other ocean systems, such as offshore structures and ships, can be applied, the unique nature and limited historical experience of WEC design necessitates assessment of the effectiveness of these methods for this specific application. This paper details a study to predict extreme loading in a two-body WEC using a combination of mid-fidelity and high-fidelity numerical modeling tools. The mid-fidelity approach is a time-domain model based on linearized potential flow hydrodynamics and the high-fidelity modeling tool is an unsteady Reynolds-averaged Navier–Stokes model. In both models, the dynamics of the WEC power take-off and mooring system have been included. For the high-fidelity model, two design wave approaches (an equivalent regular wave and a focused wave) are used to estimate the worst case wave forcing within a realistic irregular sea state. These simplified design wave approaches aim to capture the extreme response of the WEC within a feasible amount of computational effort. When compared to the mid-fidelity model results in a long-duration irregular sea, the short-duration design waves simulated in CFD produce upper percentile load responses, hinting at the suitability of these two approaches.},
doi = {10.1007/s40722-019-00129-8},
journal = {Journal of Ocean Engineering and Marine Energy},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {4}
}

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Works referenced in this record:

SPH on GPU with CUDA
journal, January 2010

  • Hérault, Alexis; Bilotta, Giuseppe; Dalrymple, Robert A.
  • Journal of Hydraulic Research, Vol. 48, Issue sup1
  • DOI: 10.1080/00221686.2010.9641247

Coupled mooring analysis for floating wave energy converters using CFD: Formulation and validation
journal, December 2016

  • Palm, Johannes; Eskilsson, Claes; Paredes, Guilherme Moura
  • International Journal of Marine Energy, Vol. 16
  • DOI: 10.1016/j.ijome.2016.05.003

Peak Forces on Wave Energy Linear Generators in Tsunami and Extreme Waves
journal, September 2017


On one-dimensional stretching functions for finite-difference calculations
journal, May 1983


A high-fidelity wave-to-wire simulation platform for wave energy converters: Coupled numerical wave tank and power take-off models
journal, September 2018


Numerical simulation of floating bodies in extreme free surface waves
journal, January 2011

  • Hu, Z. Z.; Causon, D. M.; Mingham, C. G.
  • Natural Hazards and Earth System Science, Vol. 11, Issue 2
  • DOI: 10.5194/nhess-11-519-2011

A Survey of WEC Reliability, Survival and Design Practices
journal, December 2017

  • Coe, Ryan; Yu, Yi-Hsiang; van Rij, Jennifer
  • Energies, Vol. 11, Issue 1
  • DOI: 10.3390/en11010004

Validation of OpenFOAM® for Oscillating Water Column three-dimensional modeling
journal, October 2015


DualSPHysics: Open-source parallel CFD solver based on Smoothed Particle Hydrodynamics (SPH)
journal, February 2015

  • Crespo, A. J. C.; Domínguez, J. M.; Rogers, B. D.
  • Computer Physics Communications, Vol. 187
  • DOI: 10.1016/j.cpc.2014.10.004

Numerical simulations using momentum source wave-maker applied to RANS equation model
journal, October 2009


RANS-VOF modelling of the Wavestar point absorber
journal, August 2017


Computation of flow-induced motion of floating bodies
journal, December 2005


�ber die partiellen Differenzengleichungen der mathematischen Physik
journal, December 1928

  • Courant, R.; Friedrichs, K.; Lewy, H.
  • Mathematische Annalen, Vol. 100, Issue 1
  • DOI: 10.1007/BF01448839

Survivability of wave energy converters using CFD
journal, August 2017


Investigation of Wave-Structure Interaction Using State of the Art CFD Techniques
journal, January 2014

  • Westphalen, Jan; M. Greaves, Deborah; Raby, Alison
  • Open Journal of Fluid Dynamics, Vol. 04, Issue 01
  • DOI: 10.4236/ojfd.2014.41003

SPH for 3D floating bodies using variable mass particle distribution: SPH FOR 3D FLOATING BODIES USING VARIABLE MASS PARTICLE DISTRIBUTION
journal, November 2012

  • Omidvar, Pourya; Stansby, Peter K.; Rogers, Benedict D.
  • International Journal for Numerical Methods in Fluids, Vol. 72, Issue 4
  • DOI: 10.1002/fld.3749

On survivability of asymmetric wave-energy converters in extreme waves
journal, April 2018


    Works referencing / citing this record:

    Numerical simulations using momentum source wave-maker applied to RANS equation model
    journal, October 2009


    Survivability of wave energy converters using CFD
    journal, August 2017


    Numerical simulation of floating bodies in extreme free surface waves
    journal, January 2011

    • Hu, Z. Z.; Causon, D. M.; Mingham, C. G.
    • Natural Hazards and Earth System Science, Vol. 11, Issue 2
    • DOI: 10.5194/nhess-11-519-2011

    SPH for 3D floating bodies using variable mass particle distribution: SPH FOR 3D FLOATING BODIES USING VARIABLE MASS PARTICLE DISTRIBUTION
    journal, November 2012

    • Omidvar, Pourya; Stansby, Peter K.; Rogers, Benedict D.
    • International Journal for Numerical Methods in Fluids, Vol. 72, Issue 4
    • DOI: 10.1002/fld.3749

    On survivability of asymmetric wave-energy converters in extreme waves
    journal, April 2018


    DualSPHysics: Open-source parallel CFD solver based on Smoothed Particle Hydrodynamics (SPH)
    journal, February 2015

    • Crespo, A. J. C.; Domínguez, J. M.; Rogers, B. D.
    • Computer Physics Communications, Vol. 187
    • DOI: 10.1016/j.cpc.2014.10.004

    Investigation of Wave-Structure Interaction Using State of the Art CFD Techniques
    journal, January 2014

    • Westphalen, Jan; M. Greaves, Deborah; Raby, Alison
    • Open Journal of Fluid Dynamics, Vol. 04, Issue 01
    • DOI: 10.4236/ojfd.2014.41003

    SPH on GPU with CUDA
    journal, January 2010

    • Hérault, Alexis; Bilotta, Giuseppe; Dalrymple, Robert A.
    • Journal of Hydraulic Research, Vol. 48, Issue sup1
    • DOI: 10.1080/00221686.2010.9641247

    RANS-VOF modelling of the Wavestar point absorber
    journal, August 2017


    A Survey of WEC Reliability, Survival and Design Practices
    journal, December 2017

    • Coe, Ryan; Yu, Yi-Hsiang; van Rij, Jennifer
    • Energies, Vol. 11, Issue 1
    • DOI: 10.3390/en11010004

    Computation of flow-induced motion of floating bodies
    journal, December 2005


    On one-dimensional stretching functions for finite-difference calculations
    journal, May 1983


    Coupled mooring analysis for floating wave energy converters using CFD: Formulation and validation
    journal, December 2016

    • Palm, Johannes; Eskilsson, Claes; Paredes, Guilherme Moura
    • International Journal of Marine Energy, Vol. 16
    • DOI: 10.1016/j.ijome.2016.05.003

    Peak Forces on Wave Energy Linear Generators in Tsunami and Extreme Waves
    journal, September 2017


    Validation of OpenFOAM® for Oscillating Water Column three-dimensional modeling
    journal, October 2015


    A high-fidelity wave-to-wire simulation platform for wave energy converters: Coupled numerical wave tank and power take-off models
    journal, September 2018