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

Amy Robertson; Jason Jonkman; Maija Benitz; David Schmidt; Matthew Lackner; Gordon Stewart

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

Amy Robertson, Jason Jonkman, Maija Benitz, David Schmidt, Matthew Lackner, Gordon Stewart

National Wind Technology Center

University of Massachusetts Amherst

Research output: Contribution to conference › Paper

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 analyzedin 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-codecomparison.

Original language	American English
Number of pages	13
State	Published - 2014
Event	ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014) - San Francisco, California Duration: 8 Jun 2014 → 13 Jun 2014

Conference

Conference	ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014)
City	San Francisco, California
Period	8/06/14 → 13/06/14

NREL Publication Number

NREL/CP-5000-61157

Keywords

computer aided engineering (CAE)
fast
floating offshore wind turbines
HydroDyn
NREL

Access to Document

https://www.nrel.gov/docs/fy14osti/61157.pdf

Cite this

Robertson, A., Jonkman, J., Benitz, M., Schmidt, D., Lackner, M., & Stewart, G. (2014). Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint. Paper presented at ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014), San Francisco, California. https://www.nrel.gov/docs/fy14osti/61157.pdf

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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 analyzedin 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-codecomparison.",

keywords = "computer aided engineering (CAE), fast, floating offshore wind turbines, HydroDyn, NREL",

author = "Amy Robertson and Jason Jonkman and Maija Benitz and David Schmidt and Matthew Lackner and Gordon Stewart",

year = "2014",

language = "American English",

note = "ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014) ; Conference date: 08-06-2014 Through 13-06-2014",

}

Robertson, A , Jonkman, J, Benitz, M, Schmidt, D, Lackner, M & Stewart, G 2014, 'Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint', Paper presented at ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014), San Francisco, California, 8/06/14 - 13/06/14. <https://www.nrel.gov/docs/fy14osti/61157.pdf>

Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint. / Robertson, Amy ; Jonkman, Jason; Benitz, Maija et al.
2014. Paper presented at ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014), San Francisco, California.

Research output: Contribution to conference › Paper

TY - CONF

T1 - Comparison of Hydrodynamic Load Predictions Between Engineering Models and Computational Fluid Dynamics for the OC4-DeepCwind Semi-Submersible: Preprint

AU - Robertson, Amy

AU - Jonkman, Jason

AU - Benitz, Maija

AU - Schmidt, David

AU - Lackner, Matthew

AU - Stewart, Gordon

PY - 2014

Y1 - 2014

N2 - 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 analyzedin 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-codecomparison.

AB - 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 analyzedin 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-codecomparison.

KW - computer aided engineering (CAE)

KW - fast

KW - floating offshore wind turbines

KW - HydroDyn

KW - NREL

M3 - Paper

T2 - ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014)

Y2 - 8 June 2014 through 13 June 2014

ER -

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

Abstract

Conference

NREL Publication Number

Keywords

Access to Document

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Cite this