Results 31 to 40 of about 2,250,364 (348)
Model Analysis and Modified Control Method of Ship-Mounted Stewart Platforms for Wave Compensation
IEEE 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
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Motion-correlated flow distortion and wave-induced biases in air-sea flux measurements from ships [PDF]
, 2015 Direct measurements of the turbulent air–sea fluxes of momentum, heat, moisture and gases are often made using sensors mounted on ships. Ship-based turbulent wind measurements are corrected for platform motion using well established techniques, but ...
Brooks, IM +6 more
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Intelligent control algorithm for ship dynamic positioning
Archives of Control Sciences, 2014 Ship motion in the sea is a complex nonlinear kinematics. The hydrodynamic coefficients of ship model are very difficult to accurately determine. Establishing accurate mathematical model of ship motion is difficult because of changing random factors in ...
Meng Wang +3 more
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A numerical investigation on the nominal wake of KVLCC2 model ship in regular head waves
International Journal of Naval Architecture and Ocean Engineering, 2020 Analysis: of the propulsion performance considering ship motion in waves is an important factor for the efficient operation of a ship. The interaction between the propeller and the free surface due to the ship motion in waves has a significant influence ...
Hyun-Woo Shin +4 more
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Observation of surface wave patterns modified by sub-surface shear currents [PDF]
, 2019 We report experimental observations of two canonical surface wave patterns --- ship waves and ring waves --- skewed by sub-surface shear, thus confirming effects predicted by recent theory.
Ellingsen, Simen Å. +2 more
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Searching for Critical Conditions During Lifeboat Launching – Simulations
Polish Maritime Research, 2017 The article describes numerical simulations of the process of lifeboat launching at the ship’s side. The research aimed at finding the values of ship motion parameters which appear to be most dangerous for people in the lowered lifeboat due to the ...
Dymarski Czesław +2 more
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Modelling of nonlinear wave-buoy dynamics using constrained variational methods [PDF]
, 2017 We consider a comprehensive mathematical and numerical strategy to couple water-wave motion with rigid ship dynamics using variational principles. We present a methodology that applies to three-dimensional potential flow water waves and ship dynamics ...
Bokhove, Onno +2 more
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Increase of Ship Fuel Consumption Due to the Added Resistance in Waves [PDF]
, 2017 Added resistance in waves is the second-order steady force dependant on the ship motions. It significantly affects ship operability and causes speed loss. Therefore the required power and fuel consumption of a ship advancing in a seaway increase.
Degiuli, Nastia +4 more
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Polish Maritime Research, 2014 The article presents a numerical model of object motion in six degrees of freedom (DoF) which is intended to be used to simulate 3D motion of a lifesaving module during its launching from a ship using a stern ramp in rough sea.
Dymarski Paweł, Dymarski Czesław
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Influence of initial heeling angle on ship roll motion response
Zhongguo Jianchuan Yanjiu, 2022 Objectives In this work, the influence of the initial heeling angle on the roll motion response of a ship in random beam wave is studied. MethodsSpecifically, the path integration method is applied to solve the Fokker-Planck equation, which governs the ...
Zewen ZHANG +4 more
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