Results 11 to 20 of about 663,862 (352)

Prediction of wave-induced ship motions based on integrated neural network system and spatiotemporal wave-field data

open access: yesThe Physics of Fluids, 2023
This study introduces an artificial neural network system for ship motion prediction in seaways. To consider the physical characteristics of wave-induced ship motions, neural networks based on a Long Short-Term Memory (LSTM) encoder and decoder, and a ...
JaeHyeck Lee   +3 more
semanticscholar   +1 more source

RANS Prediction of Wave-Induced Ship Motions, and Steady Wave Forces and Moments in Regular Waves

open access: yesJournal of Marine Science and Engineering, 2021
The wave-induced motions, and steady wave forces and moments for the oil tanker KVLCC2 in regular head and oblique waves are numerically predicted by using the expanded RANS solver based on OpenFOAM.
Qingze Gao, Lifei Song, Jianxi Yao
semanticscholar   +1 more source

Stability and Tracking Control of Nonlinear Rigid-Body Ship Motions

open access: yesJournal of Marine Science and Engineering, 2022
The stability and tracking controls of a dynamic ship system are studied in this paper, in order to stabilize and track the desired path of a catamaran ship system.
Chatchawan Aumtab, T. Wanichanon
semanticscholar   +1 more source

Basic investigations on the realization of aimed fishing by pelagic otter trawls [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1985
The scientific-technical realisation of aimed fishing is an essential precondition for a considerable increase of the efficiency relation between the motions of ship, trawl winch, and trawl, respectively, in required. In the present paper methods for the
M. Meisel, M. Paschen, S. Wagner
doaj   +3 more sources

Prediction of Ship Motions in Irregular Waves Based on Response Amplitude Operators Evaluated Experimentally in Noise Waves

open access: yesPolish Maritime Research, 2021
The most common methods for predicting ship roll motions in a specified sea state are direct measurements of motions in a representative irregular wave realisation (time domain) or calculations of motions from response amplitude operators (RAOs) in the ...
Bielicki Sebastian
doaj   +1 more source

Numerical solution and sensitivity analysis of hydrodynamic force derivatives on maneuverability prediction

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectivesAiming at balancing the cost and accuracy of ship maneuvering motion prediction, a numerical calculation based prediction approach is presented, combined with the sensitivity analysis of hydrodynamic derivatives.
Hanbing SUN   +4 more
doaj   +1 more source

Effect of 6-DOF Oscillation of Ship Target on SAR Imaging

open access: yesRemote Sensing, 2021
Ship targets are high-value military and civilian targets with broad application prospects. However, the precise focusing of ships is still a difficult issue because of their complicated six-degree-of-freedom motions on the sea surface.
Binbin Zhou   +3 more
doaj   +1 more source

Numerical analysis of viscous effect on ship rolling motions based on CFD

open access: yesZhongguo Jianchuan Yanjiu, 2017
During the ship design procedure, the analysis of ship rolling motions is of great significance because the rolling motions have extraordinary effects on the sea-keeping, maneuverability and stability of a ship.
LUO Tian, WAN Decheng
doaj   +1 more source

Simulation-Based Analysis of Ship Motions in Short-Crested Irregular Seas [PDF]

open access: yesJournal of Eta Maritime Science, 2017
Demonstration of the seakeeping calculation results other than polar diagrams and Cartesian plots is important during the initial and detail design stages of naval platforms due to the necessity of numerical simulations (time series data) for the design ...
Kıvanç Ali ANIL   +2 more
doaj   +1 more source

Model Analysis and Modified Control Method of Ship-Mounted Stewart Platforms for Wave Compensation

open access: yesIEEE Access, 2021
Offshore installations e.g. marine transportation, oil platforms, etc. are strongly depended on sea conditions. To increase workable time of carrying out these operations, a Stewart platform is installed on a ship to serve as a motion compensation base ...
Yunfei Cai   +4 more
doaj   +1 more source

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