Coupling between liquified gas and vessel's motion for partially filled tanks: effect on seakeeping
Author Gaillarde G., Ledoux A. and Lynch M.
Title Coupling between liquified gas and vessel's motion for partially filled tanks: effect on seakeeping
Conference/Journal RINA conference, Operation of Gas carrier, September 2004, London, UK
Month September
Year 2004

Abstract
Coupling affect design with the following features:
• For the floater: sloshing excitation
• For the FPSO/FSRU: max motion
• For the offloading system: operation feasibility
This implies that a design tool shall predict coupling effect with a “good enough” accuracy in order to gain in terms of design reliability.
A dedicated Joint Industry Project called SALT (“Seakeeping of structures Affected by Liquid Transient”) about the coupling effects has been set up by PRINCIPIA in the course of 2003. Three main tasks have been included in the scope of work:
• Model test on industrial configurations for seagoing gas carrier and moored FPSO
• Comparison between model test and DIODORE numerical results
• Deriving a methodology to use coupling model and to identify sloshing critical cases
The present paper summarises the two first step and then introduce the problematic of the last step.

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