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Coupling between flexible ship and liquid sloshing using potential flow analysis

Lee, Youngbum, Tan, Mingyi, Temarel, Pandeli and Miao, Shihua (2010) Coupling between flexible ship and liquid sloshing using potential flow analysis In Proceedings of the 29th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers. 8 pp.

Record type: Conference or Workshop Item (Paper)

Abstract

The significant increase in demand for Liquefied Natural Gas (LNG) and the economic aspects of its transportation resulted in increases in the number and size of LNG carriers. One of the design issues for LNG carriers is the sloshing phenomenon because containment systems widely used nowadays have no internal structures. Furthermore, because the weights of ship and cargo are comparable and ship operators want more flexible operations allowing partial fillings in tanks, the coupling effect between ship motions and sloshing requires further investigation, including the effect of ship distortion.

The previous study on coupling between rigid body and sloshing shows good agreement between methods of prediction and measurements[1,2]. Hence, in this paper the potential flow approach adopted for the coupling effect between rigid body ship motion and sloshing is extended to flexible ship-partially filled tank system, using the de-singularised Rankine source method. In this case, the global deflection of the flexible ship is used for application of the body boundary condition on the partially filled tank. The aim of this paper is to investigate the influence of hull flexibility on the hydrodynamic forces and moments associated with liquid sloshing and vice versa, as well as the dynamic characteristics (e.g. resonance frequencies) of the whole system. As there are no experimental results available, the method is validated by comparing hydrodynamic forces from sloshing obtained using rigid and flexible body approaches. The coupling effect between flexible ship and sloshing in partially filled tanks is investigated for an idealized LNG Carrier in beam regular waves, considering different partial filling scenarios.

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More information

Published date: June 2010
Venue - Dates: 29th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2010), China, 2010-06-06 - 2010-06-11
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 169611
URI: http://eprints.soton.ac.uk/id/eprint/169611
ISBN: 9780791838730
PURE UUID: 5838c33e-f60e-41f4-92fb-38214cf83275
ORCID for Pandeli Temarel: ORCID iD orcid.org/0000-0003-2921-1242

Catalogue record

Date deposited: 11 Jan 2011 14:31
Last modified: 18 Jul 2017 12:18

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Contributors

Author: Youngbum Lee
Author: Mingyi Tan
Author: Pandeli Temarel ORCID iD
Author: Shihua Miao

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