Abstract
The present study regards a novel wind turbine design featuring a two-bladed rotor on ate etering hub and a yawed tower. A reduced order modelling methodology is proposed for the equation of motion, using a lumped parameter approximation to derive expressions for the structural, rotor dynamic and geometric stiffness terms. The analytical expressions are validated numerically. In addition, a methodology is developed for aero elastic scaling of the rotor for use in wind tunnel tests. This results in two blade design templates, a "stiff" and a "flexible" design focusing on the vibration behaviour and deflected shapes respectively. The templates are designed to be 3D-printable as a single part. Design optimisation was performed in MSCN as tran, yielding two rotor designs, each aiming to match the non-dimensional parameters of interest. The stiff rotor matches the flap wise and torsional natural frequencies within 2.7%error, but has a mismatch in the edgewise mode, as well as the mode shapes and anti-symmetric modes. The flexible rotor is capable of capturing the target normalised displacement profile, at reduced structural mass, partially alleviating the mismatch in Lock number.
Original language | English |
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Title of host publication | AIAA SciTech Forum 2023 |
Number of pages | 20 |
ISBN (Electronic) | 978-1-62410-699-6 |
DOIs | |
Publication status | Published - 2023 |
Event | AIAA SCITECH 2023 Forum - National Harbor, MD & Online, Washington, United States Duration: 23 Jan 2023 → 27 Jan 2023 https://arc-aiaa-org.tudelft.idm.oclc.org/doi/book/10.2514/MSCITECH23 |
Publication series
Name | AIAA SciTech Forum and Exposition, 2023 |
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Conference
Conference | AIAA SCITECH 2023 Forum |
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Country/Territory | United States |
City | Washington |
Period | 23/01/23 → 27/01/23 |
Internet address |