Experimental data from ice basin tests with vertically sided cylindrical structures

Hendrikse, Hayo; Hammer, Tim C.; Berg, Marnix van den; Willems, Tom; Owen, Cody C.; Beek, Kees van der; Ebben, Nick J.J.; Puolakka, Otto; Polojärvi, Arttu

doi:10.1016/j.dib.2022.107877

Cited by 11 publications

(8 citation statements)

References 6 publications

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“…A detailed description of the test campaign and publicly available data are provided in [2]. In May and June of 2021, a total of 663 tests were conducted at the Aalto Ice Tank over a period of nine days in different types of ice.…”

Section: Experimental Campaignmentioning

confidence: 99%

“…259 tests have been qualified as successful, raw data and videos of which are publicly available [1]. Reasons for exclusion of data are related to physical limitations of the real-time hybrid test setup used, tests performed in traditional model ice not being considered representative, and issues with carriage speed control early on in the campaign [2]. The test setup used was a real-time hybrid setup combining numerical and physical components allowing to simulate the response of different types of structures to ice loading with a single setup (Figure 2).…”

Section: Experimental Campaignmentioning

confidence: 99%

“…The response of the structure was then imposed on the pile by the linear actuators. This loop had an inherent delay of about 4.5 ms which was compensated for using a forward prediction algorithm [2]. The setup was equipped with several measurement devices including accelerometers, load cells, strain gauges, magneto strictive displacement sensors and cameras.…”

Section: Experimental Campaignmentioning

confidence: 99%

“…This resulted in ice with a Young's modulus in the order of 10 GPa, average uniaxial compressive strength of 550 kPa and average bending strength of 450 kPa. These values were obtained using the standardized testing methods of the ITTC and are further elaborated upon in [2].…”

Section: Cold Model Ice and Traditional Model Icementioning

confidence: 99%

“…The first one was executed in May and June, 2021, which is the focus in this paper. Data from that campaign are publicly available [1] and described in detail in [2]. The second campaign is planned for April 2023.…”

Section: Introductionmentioning

confidence: 99%

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Ice Basin Tests for Ice-Induced Vibrations of Offshore Structures in the SHIVER Project

Hendrikse

Hammer

Owen

et al. 2022

Volume 6: Polar and Arctic Sciences and Technology

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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.

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Section: Experimental Campaignmentioning

confidence: 99%

Section: Experimental Campaignmentioning

confidence: 99%

Section: Experimental Campaignmentioning

confidence: 99%

Section: Cold Model Ice and Traditional Model Icementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ice Basin Tests for Ice-Induced Vibrations of Offshore Structures in the SHIVER Project

Hendrikse

Hammer

Owen

et al. 2022

Volume 6: Polar and Arctic Sciences and Technology

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Study on simulation of real‐time hybrid model test for offshore wind turbines

Wang

et al. 2023

Earthquake Engineering and Resilience

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As an emerging energy source with great potential, offshore wind power is supported by development policies in an increasing number of countries. However, the performance evaluation of floating offshore wind turbine (FOWT) structures is challenging due to the complexity of wind and wave loads and the difficulty in reproducing such loading conditions for downscaled FOWTs in laboratories. In physical model tests of FOWTs, the Froude's similarity law is adopted for the foundation, while the Reynolds similarity law is adopted for the blades, thus there is an issue with uncoordinated scaling laws. The FOWTs real‐time hybrid test uses loading device to simulate air loads, offering a new way to avoid scaling issues and reduce cost barriers. In this study, taking the 5 MW Braceless FOWT as the research object, a conceptual design of a real‐time hybrid model test system for Braceless offshore wind turbines is proposed. Six sets of working conditions are set for simulation to study the motion and force performances of the hybrid system. The performance requirements of the Braceless structure for the loading device in the real‐time hybrid test are quantified. Simulate different errors in the test to analyse the sensitivity of the response of the Braceless offshore wind turbine to various errors. The results show that the Braceless FOWT is relatively sensitive to motion and force errors. Due to the low‐frequency characteristics of offshore wind turbines and external load, the delay error has relatively little effect. The method results in this paper can provide theoretical support and design information support for the implementation of real‐time hybrid model tests in the future.

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Real-time hybrid model tests of floating offshore wind turbines: Status, challenges, and future trends

Shi,

Fu,

Ren

et al. 2023

Applied Ocean Research

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Experimental data from ice basin tests with vertically sided cylindrical structures

Cited by 11 publications

References 6 publications

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

Study on simulation of real‐time hybrid model test for offshore wind turbines

Real-time hybrid model tests of floating offshore wind turbines: Status, challenges, and future trends

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