... at service, a supervised machine learning method based on the gradient descent method is used to fit the QTF in short waves. The results of this approach are checked through the testing data, which is a set of 20% data chosen from the whole dataset randomly. And the applicability of this new method has been...

... ABSTRACT Steady wave longitudinal and lateral forces and yaw moment have significant influence on ship manoeuvrability in waves. The authors propose a method for predicting the steady wave forces and moment acting on ships manoeuvring in short waves using a modified formula for the wave...

... manoeuvrability pmm test wave effect sway force sea condition drift condition ship manoeuvring coefficient short wave static drift test wave condition ship numerical pmm approach Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10...

... engineering formula polar engineering conference coefficient ship calculation prediction drift force engineering conference reflection coefficient marine transportation short wave resistance proceedings experimental result gören diffraction effect international maritime...

... and velocity processes near the reef were analyzed and compared. In general, the wave attenuation mechanism of the artificial reef can be summarized as follows: the reef causes more dissipation than reflection to attenuate the waves; the reef reflects more short waves than long waves; long waves are mainly...

...Short Waves and the Wave Drag of a Ship Jiayi He1,2, Sheming Fan1, Jinbao Wang1, Francis Noblesse1,2, Chen-Jun Yang2, Wei Li2 1 Shanghai Key Laboratory of Ship Engineering, Marine Design & Research Institute of China, China 2 State Key Laboratory of Ocean Engineering, School of Naval Architecture...

... and weather routing. Also the correct estimation and understanding of the ship motions is crucial to ensure safe navigation of ships. energy conservation investigation calculation short wave engineering potential method cfd simulation upstream oil & gas offshore grid convergence test...

... in regular wave conditions. The transfer functions of the added resistance from the three different approaches are compared, and noticeably different results are observed around short wave region. The discrepancy is then analyzed systematically by comparing the local waves at different position along...

... tip motion spectra interaction standard deviation monopile operation long-crested wave wind energy frequency lifting operation renewable energy incident wave rao short wave simulation lifting system offshore technology conference wave length short-crested wave Abstract...

... lifting operation lifting system frequency wave condition wind energy simulation installation vessel platform design short wave operation monopile incident wave substructure subsea system renewable energy long wave offshore projects planning and execution eigenperiod wave kinematic...

... Abstract In this paper, various analytical and semi-empirical formulas for calculating the added resistance in short waves are critically revisited and the authors proceed with an improved formula introducing correction factors accounting for ship's block coefficient, waterline's flare angle...

... around the ship shows a clear correlation with the measured wave added resistance values. waterline oblique wave arrangement seaway oblique sea wave direction resistance ship hull ship wave bow form regular head ship model wave amplitude marine transportation short wave ship...

... appendage ship motion upstream oil & gas chip carrier short wave lpp 0 high pressure area wave height experimentally resistance coefficient head wave resistance regular head wave amplitude pressure distribution incident wave crest fn 0 A Role of Spray on the Added Resistance acting...

... unsteady RANS method. The computational results of added resistance and 2DOF motion (heave and pitch) responses are in good agreement with the experiments. ship water resistance short wave osaka university good agreement reservoir simulation equation incoming wave elevation pitch motion...

... is also extended to the analysis of added resistance in short wave range. To complement the results of added resistance in short wave, the established asymptotic calculation methods are examined. INTRODUCTION When a ship navigates in waves, the ship's forward speed decreases compared to that in calm...

... shallow water and, on top of this, a train of direct and transverse short waves of considerable height. Over the shoals, the long wakes produce high, near-bottom current velocities (Bauer et al., 2002), leading to substantial sediment resuspension and consequent increase dredging demand. Short waves...

... heights of short wave transformation on an actual port agree well with experimental results. Especially, wave diffractions behind the main breakwater are suitably reproduced because the partial reflected waves and the scattering waves with them are estimated by the porous layer boundary. Although...

... short wave mathematics coefficient equation incidence ice sheet directional reflection asymptotic behaviour boundary condition dixon thickness squire propagation wave propagation transmission ice-coupled wave normal incidence ice thickness transmission coefficient Wave...

...(1992;1994), Mciver, M, and Mciver, P(1990) respectively. Kojima(1990) employed second order stokes wave to study this problem and also made comparison with experiment results. short wave wave amplitude 3cm multi-type model plate-type breakwater plate submergence coefficient free surface...

... model offshore reflection wave attenuator fc 0 l-shaped plate wave energy dissipation oscillation natural period short wave transmitted wave experiment coefficient footing plate breakwater nakamura basic model reflection characteristic Proceedings of the Ninth (1999) International...