Superelement reduction of substructures for sequential load calculations in OpenFAST
Abstract
This article presents the superelement formulation newly implemented in OpenFAST to simulate fixed-bottom substructures with a reduced-order model similar to a common industry practice. The Guyan and Craig-Bampton methods are used to reduce the number of degrees of freedom and generate a so-called "superelement". The formulation allows manufacturers to exchange such superelements to perform load calculations without revealing sensitive information about the support structure (e.g., foundation, substructure, and/or tower) or turbine. The source code is made publicly available in the OpenFAST repository. Test cases with varying degrees of complexity are presented to validate the technique, and accuracy issues are discussed.
- Authors:
-
[1];
[1];
[1];
[1];
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Keystone Engineering Inc., Metairie, LA (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office
- OSTI Identifier:
- 1659881
- Report Number(s):
- NREL/JA-5000-75173
Journal ID: ISSN 1742-6588; MainId:7075;UUID:ef644332-61ec-e911-9c29-ac162d87dfe5;MainAdminID:13559
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Physics. Conference Series
- Additional Journal Information:
- Journal Volume: 1452; Journal ID: ISSN 1742-6588
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 17 WIND ENERGY; FEM; foundations; substructures; superelements
Citation Formats
Branlard, E., Shields, M., Anderson, B., Damiani, R., Wendt, F., Jonkman, J., Musial, W., and Foley, B. Superelement reduction of substructures for sequential load calculations in OpenFAST. United States: N. p., 2020.
Web. doi:10.1088/1742-6596/1452/1/012033.
Branlard, E., Shields, M., Anderson, B., Damiani, R., Wendt, F., Jonkman, J., Musial, W., & Foley, B. Superelement reduction of substructures for sequential load calculations in OpenFAST. United States. https://doi.org/10.1088/1742-6596/1452/1/012033
Branlard, E., Shields, M., Anderson, B., Damiani, R., Wendt, F., Jonkman, J., Musial, W., and Foley, B. Wed .
"Superelement reduction of substructures for sequential load calculations in OpenFAST". United States. https://doi.org/10.1088/1742-6596/1452/1/012033. https://www.osti.gov/servlets/purl/1659881.
@article{osti_1659881,
title = {Superelement reduction of substructures for sequential load calculations in OpenFAST},
author = {Branlard, E. and Shields, M. and Anderson, B. and Damiani, R. and Wendt, F. and Jonkman, J. and Musial, W. and Foley, B.},
abstractNote = {This article presents the superelement formulation newly implemented in OpenFAST to simulate fixed-bottom substructures with a reduced-order model similar to a common industry practice. The Guyan and Craig-Bampton methods are used to reduce the number of degrees of freedom and generate a so-called "superelement". The formulation allows manufacturers to exchange such superelements to perform load calculations without revealing sensitive information about the support structure (e.g., foundation, substructure, and/or tower) or turbine. The source code is made publicly available in the OpenFAST repository. Test cases with varying degrees of complexity are presented to validate the technique, and accuracy issues are discussed.},
doi = {10.1088/1742-6596/1452/1/012033},
journal = {Journal of Physics. Conference Series},
number = ,
volume = 1452,
place = {United States},
year = {2020},
month = {3}
}
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