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.
| Original language | American English |
|---|---|
| Article number | Article No. 012033 |
| Number of pages | 14 |
| Journal | Journal of Physics: Conference Series |
| Volume | 1452 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2020 |
| Event | North American Wind Energy Academy, NAWEA 2019 and the International Conference on Future Technologies in Wind Energy 2019, WindTech 2019 - Amherst, United States Duration: 14 Oct 2019 → 16 Oct 2019 |
Bibliographical note
Publisher Copyright:© 2020 IOP Publishing Ltd. All rights reserved.
NLR Publication Number
- NREL/JA-5000-75173
Keywords
- FEM
- foundations
- substructures
- superelements
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