Activities per year
Abstract
Wave excitation tests on a fixed sphere with the center at the still water level were carried out with three different physical wave basin setups. The tests were completed as a continued effort of the working group OES Wave Energy Converters Modelling Verification and Validation to increase confidence in numerical models of wave energy converters by generation of accurate benchmarks datasets for numerical model validation. An idealized testcase with wave excitation of a fixed sphere to be used with the benchmarks was formulated. The three investigated physical wave basin setups included: 1) a six degree-of-freedom load cell mounted to the top of the sphere, 2) a bending beam force transducer mounted to the top of the sphere, and 3) a system of six pretensioned wires mounted to the top and bottom of the sphere with force transducers attached to each wire. The aim of the present paper is to identify the best representation of the idealized testcase. To this end, the three experimental setups are inter-compared in terms of dynamic properties, sensitivity, and disturbances of the water phase from the presence of measurement equipment. Low inter-experiment variability was disclosed, i.e., 5-8% depending on wave-nonlinearity, indicating accurate representations of the idealized testcase across all setups. Setup 3 was found to be the more accurate representation and further work with this setup to release a public benchmark dataset was planned.
Original language | English |
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Title of host publication | Proceedings of the 15th European Wave and Tidal Energy Conference |
Publisher | European Wave and Tidal Energy Conference |
Publication date | Sept 2023 |
Article number | 170 |
DOIs | |
Publication status | Published - Sept 2023 |
Event | European Wave and Tidal Energy Conference - Bilbao, Spain Duration: 3 Sept 2023 → 7 Sept 2023 Conference number: 15 https://ewtec.org/ewtec-2023/ |
Conference
Conference | European Wave and Tidal Energy Conference |
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Number | 15 |
Country/Territory | Spain |
City | Bilbao |
Period | 03/09/2023 → 07/09/2023 |
Internet address |
Series | Proceedings of the European Wave and Tidal Energy Conference |
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Volume | 15 |
ISSN | 2706-6932 |
Keywords
- physical tests
- sphere
- wave energy converters
- fluid–structure interaction
- wave excitation force
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Wave Excitation Tests on a Fixed Sphere: Comparison of Physical Wave Basin Setups
Jacob Andersen (Lecturer)
7 Sept 2023Activity: Talks and presentations › Conference presentations
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European Wave and Tidal Energy Conference
Sarah Krogh Iversen (Participant)
4 Sept 2023 → 7 Sept 2023Activity: Attending an event › Conference organisation or participation
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European Wave and Tidal Energy Conference
Jacob Andersen (Participant), Claes Eskilsson (Participant), Francesco Ferri (Participant), Sarah Krogh Iversen (Participant) & Peter Frigaard (Participant)
3 Sept 2023 → 7 Sept 2023Activity: Attending an event › Conference organisation or participation
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Wave Excitation Forces on a Sphere: Description of a Physical Testcase
Kramer, M. B. & Andersen, J., Jan 2024, 3 ed. Department of the Built Environment, Aalborg University. (DCE Technical Reports; No. 308).Research output: Book/Report › Report › Research
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Hydrodynamic Modelling of Offshore Renewables: Experimental Benchmark Datasets and Numerical Simulation
Andersen, J., 2023, Aalborg Universitetsforlag. 239 p.Research output: PhD thesis
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Wave Excitation Forces on a Sphere: Description of an Idealized Testcase
Kramer, M. B., Andersen, J. & Nielsen, K., Jan 2023, 2 ed. Aalborg: Department of the Built Environment, Aalborg University. 13 p. (DCE Technical Reports; No. 307).Research output: Book/Report › Report › Research
Open AccessFile