Ice Basin Tests For Ice-Induced Vibrations Of Offshore Structures In The Shiver Project

Ice Basin Tests For Ice-Induced Vibrations Of Offshore Structures In The Shiver Project

Hendrikse, H. (TU Delft Offshore Engineering)
Hammer, T.C. (TU Delft Offshore Engineering)
Owen, C.C. (TU Delft Offshore Engineering)
van den Berg, M.A. (TU Delft Offshore Engineering)
van Beek, C. (TU Delft EMSD CE&G)
Polojärvi, Arttu (Aalto University)
Puolakka, Otto (Aalto University)
Willems, Tom (Siemens Gamesa Renewable Energy)

2022

With the recent surge in development of offshore wind in the Baltic Sea, Bohai Sea and other ice-prone regions, a need has arisen for new basin tests to qualify the interaction between offshore wind turbines and sea ice. To this end, a series of model tests was performed at the Aalto ice basin as part of the SHIVER project. The tests were aimed at modeling the dynamic interaction between flexible, vertically-sided structures and ice failing in crushing. A real-time hybrid test setup was used which combines numerical and physical components to model the structure. This novel test setup enabled the testing of a wide range of structure types, including existing full-scale structures for which ice-induced vibrations have been documented, and a series of single-degree-of-freedom oscillators to obtain a better understanding of the fundamental processes during dynamic ice-structure interaction. The tests were primarily focused on the dynamic behavior of support structures for offshore wind turbines under ice crushing loads. First results of the campaign show that the combination of the use of cold model ice and not scaling time and deflection of the structure can yield representative ice-structure interaction in the basin. This is demonstrated with experiments during which a scaled model of the Norströmsgrund lighthouse and Molikpaq caisson were used. The offshore wind turbine tests resulted in multi-modal interaction which can be shown to be relevant for the design of the support structure. The dataset has been made publicly available for further analysis.

Offshore wind
ice-structure interaction
scaling
frequency lock-in
intermittent crushing

http://resolver.tudelft.nl/uuid:9e66d674-d290-424b-8479-1e85a0ffbf37

https://doi.org/10.1115/OMAE2022-78507

The American Society of Mechanical Engineers (ASME), Hamburg, Germany

2023-04-13

978-0-7918-8591-8

Polar and Arctic Sciences and Technology

ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022, 2022-06-05 → 2022-06-10, Congress Center Hamburg, Hamburg, Germany

Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE, 6

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

conference paper

© 2022 H. Hendrikse, T.C. Hammer, C.C. Owen, M.A. van den Berg, C. van Beek, Arttu Polojärvi, Otto Puolakka, Tom Willems