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Title: Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint

Abstract

Hydrodynamic loads on the platforms of floating offshore wind turbines are often predicted with computer-aided engineering tools that employ Morison's equation and/or potential-flow theory. This work compares results from one such tool, FAST, NREL's wind turbine computer-aided engineering tool, and the computational fluid dynamics package, OpenFOAM, for the OC4-DeepCwind semi-submersible analyzed in the International Energy Agency Wind Task 30 project. Load predictions from HydroDyn, the offshore hydrodynamics module of FAST, are compared with high-fidelity results from OpenFOAM. HydroDyn uses a combination of Morison's equations and potential flow to predict the hydrodynamic forces on the structure. The implications of the assumptions in HydroDyn are evaluated based on this code-to-code comparison.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy Wind Power Technologies Office
OSTI Identifier:
1158450
Report Number(s):
NREL/CP-5000-61157
DOE Contract Number:
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014), 8-13 June 2014, San Francisco, California
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; FLOATING OFFSHORE WIND TURBINES; COMPUTER-AIDED ENGINEERING; FAST; HYDRODYN; NREL; Wind Energy

Citation Formats

Benitz, M. A., Schmidt, D. P., Lackner, M. A., Stewart, G. M., Jonkman, J., and Robertson, A. Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint. United States: N. p., 2014. Web. doi:10.1115/OMAE2014-23985.
Benitz, M. A., Schmidt, D. P., Lackner, M. A., Stewart, G. M., Jonkman, J., & Robertson, A. Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint. United States. doi:10.1115/OMAE2014-23985.
Benitz, M. A., Schmidt, D. P., Lackner, M. A., Stewart, G. M., Jonkman, J., and Robertson, A. Mon . "Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint". United States. doi:10.1115/OMAE2014-23985. https://www.osti.gov/servlets/purl/1158450.
@article{osti_1158450,
title = {Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint},
author = {Benitz, M. A. and Schmidt, D. P. and Lackner, M. A. and Stewart, G. M. and Jonkman, J. and Robertson, A.},
abstractNote = {Hydrodynamic loads on the platforms of floating offshore wind turbines are often predicted with computer-aided engineering tools that employ Morison's equation and/or potential-flow theory. This work compares results from one such tool, FAST, NREL's wind turbine computer-aided engineering tool, and the computational fluid dynamics package, OpenFOAM, for the OC4-DeepCwind semi-submersible analyzed in the International Energy Agency Wind Task 30 project. Load predictions from HydroDyn, the offshore hydrodynamics module of FAST, are compared with high-fidelity results from OpenFOAM. HydroDyn uses a combination of Morison's equations and potential flow to predict the hydrodynamic forces on the structure. The implications of the assumptions in HydroDyn are evaluated based on this code-to-code comparison.},
doi = {10.1115/OMAE2014-23985},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}

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