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128675 - Calculation of restoring moment in ship roll motion through numerical simulation.pdf (5.97 MB)

Calculation of restoring moment in ship roll motion through numerical simulation

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conference contribution
posted on 2023-05-23, 13:43 authored by Kianejad, SS, Hossein EnshaeiHossein Enshaei, Jonathan DuffyJonathan Duffy, Ansarifard, N
Accurate calculation of restoring moment, virtual mass moment of inertia and damping moment increases accuracy of a ship’s dynamic stability simulation. The current methods of approximating the roll restoring moment are based on hydrostatic calculations. These methods overlook dynamic conditions and the effects of pressure distribution around the body. In the current study, a CFD approach is adopted based on a harmonic excited roll motion method to investigate roll motion characteristics and calculate the restoring moment in dynamic conditions. This investigation considers multiple degrees of freedom (DOF) at different Froude numbers, bare-hull and fully appended conditions. The results show that the restoring moment in dynamic condition is larger than static condition.

History

Publication title

Proceedings of the 13th International Conference on the Stability of Ships and Ocean Vehicles (STAB 2018)

Editors

N Umeda, T Katayama, A Maki

Pagination

429-442

Department/School

Australian Maritime College

Publisher

STAB 2018

Place of publication

Japan

Event title

13th International Conference on the Stability of Ships and Ocean Vehicles (STAB 2018)

Event Venue

Kobe, Japan

Date of Event (Start Date)

2018-09-16

Date of Event (End Date)

2018-09-21

Rights statement

Copyright 2018 the authors

Repository Status

  • Open

Socio-economic Objectives

International sea freight transport (excl. live animals, food products and liquefied gas); Expanding knowledge in engineering

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