Results 151 to 160 of about 268 (171)

On the Nonlinear Ship Roll Damping Components

1994
Scale model experiments of roll decay in calm water and forced roll in a regular beam sea have been conducted on several ship typologies. A methodology for the estimation of the roll equation parameters, based on nonlinear least squares fitting to the experimental data has been developed and implemented in a computer code.
Cardo A., Coppola C., CONTENTO, GIORGIO, FRANCESCUTTO, ALBERTO, Penna R.   +4 more
openaire   +1 more source

Nonlinear Ship Rolling: Identification of Damping Model

1991
The problem of the correct formulation of a roll damping model and of an efficient evaluation of the damping coefficients are examined in a critical analysis. It results that, whereas numerical hydrodynamics does not forecast satisfactorily results valid for large amplitude rolling, experiments are more reliable but their analysis also presents some ...
FRANCESCUTTO, ALBERTO, NABERGOJ, RADOSLAV, Hsiu T. C.   +2 more
openaire   +1 more source

Comprehensive Roll Damping Assessment and Motion Analysis for a Benchmark Container Ship

Gemi ve Deniz Teknolojisi
The primary purpose of this study is to investigate the damping characteristics of the ship’s roll motion. The second goal is to explore the damping effects on the solution of roll motion, considering the ship’s forward speed, wave frequency, and initial roll amplitude.
Rabia YENİLMEZ, Ferdi ÇAKICI
openaire   +3 more sources

A RANS Based Method for the Estimation of Ship Roll Damping With Forward Speed

23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 3, 2004
For the prediction of ship roll motion, viscous effects must be taken into account. Several methods, experimental and theoretical, have previously been used to calculate hydrodynamic forces in roll motion. Theoretical methods applied so far to this problem have been based mainly on potential flow models, which cannot account for viscous effects ...
Kumar B. Salui, Vladimir Shigunov, Dracos Vassalos   +2 more
openaire   +1 more source

Gyroscope and activated anti-rolling tank equations in ship roll damping

2017
Each Ship Can Transfer Safely in certain Zone According to Its Stability and Regime of Sea State. Therefore, if Ship Have to Pass in Specific Condition that Sea State is Jumpy, Should be Provide One or More Anti Rolling Methods to Survive. The Purpose of this Article is Reduction and Control of Rolling Motion to Reach Proper Hydrostatic Stability with ...
Shadkam, S., Gholami, E.
openaire   +1 more source

The effect of forward speed on ship roll damping

1983
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1983. ; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING ; Includes bibliographical references. ; by Douglas Bruce Colbourne. ; M.S.
openaire   +1 more source

Study of damping effect of the floodwater on a damaged ship roll motion

2015
Roll decay of a ship in flooded condition was studied experimentally and numerically. Two different flooded compartment layouts were used. Floodwater motions in the compartments were simulated numerically by applying lumped mass with a moving free surface method. Water exchange through the non-watertight bulkheads in compartment was modeled by applying
Mikkola, Tommi, Matusiak, Jerzy, Manderbacka, Teemu   +3 more
openaire   +4 more sources

Advances on numerical and experimental investigation of ship roll damping

Journal of Hydrodynamics, 2023
Patrick Sumislawski, Moustafa Abdel-Maksoud   +1 more
openaire   +1 more source

Machine learning-based wavelet method for estimating the parameters in ship roll damping models using Legendre polynomials

Ships and Offshore Structures, 2023
Hariharan G
exaly  

Formulation of ship roll damping models from free-decay data

Ocean Engineering, 2023
Dong Zhang, Wei Liu
exaly