Validation of CFD simulations of the moored DeepCwind offshore wind semisubmersible in irregular waves
Abstract
This article examines the use of computational fluid dynamics (CFD) simulations to predict the response of a floating wind platform to irregular-wave excitation. This work was conducted as part of the Reproducible CFD Joint Industry Project for Floating Offshore Wind Applications and involved verification across several participants and modeling tools and validation against experiments. The authors pay special attention to the uncertainties in both CFD results and experimental measurements. In this work, we perform detailed comparisons of the incident waves and the motion of a moored structure. The nonlinear, low-frequency resonance motion is of particular interest because it potentially drives the mooring and tower-base loads. The verification and validation study is partially successful in that the CFD simulations capture the low-frequency slow-drift motion well but underpredict the low-frequency pitch resonance. This underprediction can be attributed in part to the CFD incident waves, which showed some discrepancies with the experimental waves, especially around extreme events. The effects of the wave discrepancies are also estimated and investigated using a mid-fidelity OpenFAST model. Overall, the present study increases our confidence in using CFD simulations to predict the global performance of offshore wind platforms in irregular waves and to produce data for the calibrationmore »
- Authors:
-
[1];
[1];
[3];
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Front Energies, Houston, TX (United States)
- Technip Energies, Houston, TX (United States)
- Maritime Research Institute, Wageningen (Netherlands)
- American Bureau of Shipping, Houston, TX (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office; Dutch Ministry of Economic Affairs and Climate Policy
- OSTI Identifier:
- 1883381
- Report Number(s):
- NREL/JA-5000-83190
Journal ID: ISSN 0029-8018; MainId:83963;UUID:d8e86f97-9142-4cb5-91ce-4e97fc95649d;MainAdminID:65022
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Ocean Engineering
- Additional Journal Information:
- Journal Volume: 260; Journal ID: ISSN 0029-8018
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 17 WIND ENERGY; CFD; irregular wave; offshore wind; semisubmersible; uncertainty; validation
Citation Formats
Wang, Lu, Robertson, Amy N., Kim, Jang, Jang, Hyunchul, Shen, Zhi-Rong, Koop, Arjen H., Bunnik, Tim H. J., and Yu, Kai. Validation of CFD simulations of the moored DeepCwind offshore wind semisubmersible in irregular waves. United States: N. p., 2022.
Web. doi:10.1016/j.oceaneng.2022.112028.
Wang, Lu, Robertson, Amy N., Kim, Jang, Jang, Hyunchul, Shen, Zhi-Rong, Koop, Arjen H., Bunnik, Tim H. J., & Yu, Kai. Validation of CFD simulations of the moored DeepCwind offshore wind semisubmersible in irregular waves. United States. https://doi.org/10.1016/j.oceaneng.2022.112028
Wang, Lu, Robertson, Amy N., Kim, Jang, Jang, Hyunchul, Shen, Zhi-Rong, Koop, Arjen H., Bunnik, Tim H. J., and Yu, Kai. Fri .
"Validation of CFD simulations of the moored DeepCwind offshore wind semisubmersible in irregular waves". United States. https://doi.org/10.1016/j.oceaneng.2022.112028. https://www.osti.gov/servlets/purl/1883381.
@article{osti_1883381,
title = {Validation of CFD simulations of the moored DeepCwind offshore wind semisubmersible in irregular waves},
author = {Wang, Lu and Robertson, Amy N. and Kim, Jang and Jang, Hyunchul and Shen, Zhi-Rong and Koop, Arjen H. and Bunnik, Tim H. J. and Yu, Kai},
abstractNote = {This article examines the use of computational fluid dynamics (CFD) simulations to predict the response of a floating wind platform to irregular-wave excitation. This work was conducted as part of the Reproducible CFD Joint Industry Project for Floating Offshore Wind Applications and involved verification across several participants and modeling tools and validation against experiments. The authors pay special attention to the uncertainties in both CFD results and experimental measurements. In this work, we perform detailed comparisons of the incident waves and the motion of a moored structure. The nonlinear, low-frequency resonance motion is of particular interest because it potentially drives the mooring and tower-base loads. The verification and validation study is partially successful in that the CFD simulations capture the low-frequency slow-drift motion well but underpredict the low-frequency pitch resonance. This underprediction can be attributed in part to the CFD incident waves, which showed some discrepancies with the experimental waves, especially around extreme events. The effects of the wave discrepancies are also estimated and investigated using a mid-fidelity OpenFAST model. Overall, the present study increases our confidence in using CFD simulations to predict the global performance of offshore wind platforms in irregular waves and to produce data for the calibration of lower-fidelity models.},
doi = {10.1016/j.oceaneng.2022.112028},
journal = {Ocean Engineering},
number = ,
volume = 260,
place = {United States},
year = {Fri Aug 05 00:00:00 EDT 2022},
month = {Fri Aug 05 00:00:00 EDT 2022}
}
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