With increased activities in natural gas transportation and offshore exploration in the past decades, assessment of sloshing in liquefied natural gas (LNG) tanks has become an important practical issue. In this paper, we focus on the deterministic calculation of the coupled sloshing and ship motions in regular wave conditions. An in-house numerical code is used to solve the seakeeping problem coupled with the sloshing dynamics. The numerical method adopts a weakly nonlinear approach using impulse response functions for the seakeeping problem. Nonlinear Froude-Krylov and hydrostatic forces are directly evaluated in the time domain. A three-dimensional finite difference method is applied to solve the sloshing problem. The numerical method is validated by comparing with experimental results in the literature. The developed numerical method is used to analyze the nonlinear effects of wave heights.
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ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
June 17–22, 2018
Madrid, Spain
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5130-2
PROCEEDINGS PAPER
Nonlinear Effects of Wave Heights on Coupled Sloshing and Seakeeping Responses
Xin Wang,
Xin Wang
Newcastle University, Newcastle Upon Tyne, UK
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Makoto Arai,
Makoto Arai
Yokohama National University, Yokohama, Japan
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Gustavo Karuka
Gustavo Karuka
Yokohama National University, Yokohama, Japan
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Xin Wang
Newcastle University, Newcastle Upon Tyne, UK
Makoto Arai
Yokohama National University, Yokohama, Japan
Gustavo Karuka
Yokohama National University, Yokohama, Japan
Paper No:
OMAE2018-78232, V009T13A024; 9 pages
Published Online:
September 25, 2018
Citation
Wang, X, Arai, M, & Karuka, G. "Nonlinear Effects of Wave Heights on Coupled Sloshing and Seakeeping Responses." Proceedings of the ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. Volume 9: Offshore Geotechnics; Honoring Symposium for Professor Bernard Molin on Marine and Offshore Hydrodynamics. Madrid, Spain. June 17–22, 2018. V009T13A024. ASME. https://doi.org/10.1115/OMAE2018-78232
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