Results 11 to 20 of about 5,053 (208)

Nonlinear roll damping of a barge with and without liquid cargo in spherical tanks

open access: yesJournal of Ocean Engineering and Science, 2016
Damping plays a significant role on the maximum amplitude of a vessel's roll motion, in particular near the resonant frequency. It is a common practice to predict roll damping using a linear radiation–diffraction code and add that to a linearized viscous
Wenhua Zhao   +3 more
doaj   +1 more source

Opening the air‐chamber of an oscillating water column spar buoy wave energy converter to avoid parametric resonance

open access: yesIET Renewable Power Generation, 2021
The oscillating‐water‐column (OWC) spar‐buoy is a type of wave energy converter that may exhibit undesirable large roll and pitch amplitudes caused by a dynamic instability induced by parametric resonance.
Josh Davidson   +3 more
doaj   +1 more source

Numerical simulations of two-dimensional floating breakwaters in regular waves using fixed cartesian grid

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2014
The wave attenuation by floating breakwaters in high amplitude waves, which can lead to wave overtopping and breaking, is examined by numerical simulations.
Jeong Kwang-Leol, Lee Young-Gill
doaj   +3 more sources

Preliminary tests of a damaged ship for CFD validation

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2012
One of the most critical issues in naval architecture these days is the operational safety. Among many factors to be considered for higher safety level requirements, the hull stability in intact and damaged conditions is the first to ensure for both ...
Sungkyun Lee   +5 more
doaj   +1 more source

Warm inflation with non-comoving scalar field and radiation fluid

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We consider a warm inflationary scenario in which the two major fluid components of the early Universe, the scalar field and the radiation fluid, evolve with distinct four-velocities.
Tiberiu Harko, Haidar Sheikhahmadi
doaj   +1 more source

Influence of an Integral Heave Plate on the Dynamic Response of Floating Offshore Wind Turbine Under Operational and Storm Conditions

open access: yesEnergies, 2020
The hydrodynamic performance of the floating foundation for offshore wind turbines is essential to its stability and energy harvesting. A semi-submersible platform with an integral heave plate is proposed in order to reduce the vertical motion responses.
Yichen Jiang   +4 more
doaj   +1 more source

Stochastic Dynamic Response Analysis of a 10 MW Tension Leg Platform Floating Horizontal Axis Wind Turbine

open access: yesEnergies, 2018
The dynamic response of floating horizontal axis wind turbines (FHWATs) are affected by the viscous and inertia effects. In free decay motion, viscous drag reduces the amplitude of pitch and roll fluctuation, the quasi-static mooring system overestimates
Tao Luo   +3 more
doaj   +1 more source

A Coupled SVM-NODE Model for Efficient Prediction of Ship Roll Motion

open access: yesJournal of Marine Science and Engineering
Traditional analyses of ship roll damping and added moment of inertia rely on free roll decay and forced roll tests, but acquiring linear (small angles) and nonlinear (large angles) relationships demands extensive computational cases and parameter ...
Yaxiong Zheng   +3 more
doaj   +1 more source

A Fast Simulation Method for Damaged Ship Dynamics

open access: yesJournal of Marine Science and Engineering, 2019
Ship accidents that entail flooding may lead to disastrous consequences which could be avoided or mitigated based on the knowledge of damaged ship dynamics.
Maria Acanfora   +2 more
doaj   +1 more source

Response Characteristics of the DeepCwind Floating Wind Turbine Moored by a Single-Point Mooring System

open access: yesApplied Sciences, 2018
In recent years, the SPM (Single-Point Mooring) concept has been widely employed in several branches of the naval architecture and marine engineering field, such as FPSOs (Floating Production, Storage and Offloading units), offshore oil rigs, etc., but ...
Yingyi Liu   +5 more
doaj   +1 more source

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