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

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:
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Publication Date:
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
Research Org:
National Renewable Energy Laboratory (NREL), Golden, CO.
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy Wind Power Technologies Office
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY FLOATING OFFSHORE WIND TURBINES; COMPUTER-AIDED ENGINEERING; FAST; HYDRODYN; NREL; Wind Energy