Open AccessThe Impact of Sloshing Liquids on Ship Stability for Various Dimensions of Partly Filled Tanks
Author(s) -
P. Krata
Publication year - 2013
Publication title -
transnav the international journal on marine navigation and safety of sea transportation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.253
H-Index - 5
eISSN - 2083-6481
pISSN - 2083-6473
DOI - 10.12716/1001.07.04.02
Subject(s) - slosh dynamics , stability (learning theory) , moment (physics) , longitudinal static stability , marine engineering , computational fluid dynamics , transverse plane , mechanics , engineering , structural engineering , computer science , aerospace engineering , physics , classical mechanics , machine learning , aerodynamics
Liquid sloshing phenomenon taking place in partly filled ships’ tanks directly affects the stability of a vessel. However, only static calculations are carried out onboard ships nowadays and static transfer of liquid weight is taken into account in the course of routine stability calculation. The paper is focused on a dynamic heeling moment due to liquid sloshing in tanks onboard ships. A number of numerical simulations of liquid sloshing taking place in a moving tank is carried out. The wide range of ship’s tanks is taken into account. The conducted CFD simulations are experimentally verified. Finally, the method of an assessment of the liquid sloshing impact on ship transverse stability is worked out. The key point of the method is a dynamic coefficient describing relation of the researched dynamic heeling moment and the quasi-static one in terms of dynamic stability of a vessel which is related to the weather criterion of ship stability assessment.
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