Superelement reduction of substructures for sequential load calculations in OpenFAST [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 621.518 Applied physics
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: Article No. 012033 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 257225
• Chủ đề: 1. 17 wind energy; 2. Fem; 3. Foundations; 4. Substructures; 5. Superelements

Tóm tắt

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.