Time domain assessment of nonlinear coupled ship motions and sloshing in free surface tanks

Ships at sea almost invariably carry liquids onboard, and liquids are contained in appropriate tanks. Being able to take into account the effects of liquids onboard when predicting ship motions is, therefore, of utmost importance for the safe operation of a vessel. In certain conditions, such predic...

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Bibliographic Details
Published in:Volume 1: Offshore Technology; Offshore Geotechnics
Main Authors: Cercos Pita, Jose Luis, Souto Iglesias, Antonio, BULIAN, GABRIELE
Other Authors: Various Authors, Cercos Pita, Jose Lui, Bulian, Gabriele
Format: Conference Object
Language:English
Published: American Society of Mechanical Engineers (ASME) 2015
Subjects:
ship motion
sloshing
roll
co-simulation
sph
blended codes
Arctic
Online Access:http://hdl.handle.net/11368/2862850
https://doi.org/10.1115/OMAE2015-42048
http://www.asmedl.org/journals/doc/ASMEDL-home/proc/
Description
Summary:Ships at sea almost invariably carry liquids onboard, and liquids are contained in appropriate tanks. Being able to take into account the effects of liquids onboard when predicting ship motions is, therefore, of utmost importance for the safe operation of a vessel. In certain conditions, such predictions also require taking into account nonlinearities in both ship motions and in the internal flow, and linear approaches are not sufficient. Within this context, the present paper describes a simulation approach where a blended 6-DOF nonlinear ship motions prediction solver handling the external fluid-ship interaction, is coupled with a Smoothed-Particle-Hydrodynamics (SPH) solver for simulating the internal flow tank dynamics. The solvers are described and an example application is reported.

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