Numerical simulations and experiments of an elastic circular collar of a floating fish farm are reported. The floater model without netting structure is moored with nearly horizontal moorings and tested in regular deep-water waves of different steepnesses and periods without current. Local overtopping of waves was observed in steep waves. The focus here is on the vertical accelerations along the floater in the different conditions. The experiments show that higher-order harmonics of the accelerations matter. A three-dimensional (3D) weak-scatter model with partly nonlinear effects as well as a 3D linear frequency-domain method based on potential flow are used. From their comparison against the measurements, strong 3D and frequency dependency effects as well as flexible floater motions matter. The weak-scatter model can only partly explain the nonlinearities present in the measured accelerations.
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February 2018
Research-Article
Wave-Induced Accelerations of a Fish-Farm Elastic Floater: Experimental and Numerical Studies
Peng Li,
Peng Li
Department of Marine Technology,
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway
e-mail: peng.li@ntnu.no
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway
e-mail: peng.li@ntnu.no
Search for other works by this author on:
Odd M. Faltinsen,
Odd M. Faltinsen
Department of Marine Technology,
Centre for Autonomous Marine Operations
and Systems (AMOS),
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway
e-mail: Odd.faltinsen@ntnu.no
Centre for Autonomous Marine Operations
and Systems (AMOS),
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway
e-mail: Odd.faltinsen@ntnu.no
Search for other works by this author on:
Marilena Greco
Marilena Greco
Department of Marine Technology,
Centre for Autonomous Marine Operations
and Systems (AMOS),
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway;
Centre for Autonomous Marine Operations
and Systems (AMOS),
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway;
Search for other works by this author on:
Peng Li
Department of Marine Technology,
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway
e-mail: peng.li@ntnu.no
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway
e-mail: peng.li@ntnu.no
Odd M. Faltinsen
Department of Marine Technology,
Centre for Autonomous Marine Operations
and Systems (AMOS),
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway
e-mail: Odd.faltinsen@ntnu.no
Centre for Autonomous Marine Operations
and Systems (AMOS),
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway
e-mail: Odd.faltinsen@ntnu.no
Marilena Greco
Department of Marine Technology,
Centre for Autonomous Marine Operations
and Systems (AMOS),
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway;
Centre for Autonomous Marine Operations
and Systems (AMOS),
Norwegian University of Science
and Technology (NTNU),
Trondheim NO-7491, Norway;
1Corresponding author.
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received June 2, 2016; final manuscript received July 19, 2017; published online September 20, 2017. Assoc. Editor: Wei Qiu.
J. Offshore Mech. Arct. Eng. Feb 2018, 140(1): 011201 (9 pages)
Published Online: September 20, 2017
Article history
Received:
June 2, 2016
Revised:
July 19, 2017
Citation
Li, P., Faltinsen, O. M., and Greco, M. (September 20, 2017). "Wave-Induced Accelerations of a Fish-Farm Elastic Floater: Experimental and Numerical Studies." ASME. J. Offshore Mech. Arct. Eng. February 2018; 140(1): 011201. https://doi.org/10.1115/1.4037488
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