... of coupled motion as well as the coupled motion states of the trimaran equipped with the T-foil were analyzed in oblique head waves. The influence of the T-foil on coupled motions of the trimaran was investigated and the effect of different wave amplitudes as well as the forward speed of the trimaran...

... social responsibility climate change forward speed numerical calculation vertical acceleration wave direction beam wave statistical analysis united states government sustainable development irregular wave head wave rao acceleration response motion time sery experimental method spectral...

... china government frequency formula recess-type moonpool asia government drillship motion response surge rao upstream oil & gas moonpool natural frequency resonance sloshing-mode natural frequency sloshing-mode resonance drilling equipment moonpool configuration forward speed...

... and the URANS (unsteady Reynolds-averaged Navier–Stokes) simulations are conducted to predict the roll motion of ONR Tumblehome with the scale ratio 1:40.53 in irregular beam waves without forward speed. The simulation results are compared with EFD (experimental fluid dynamics) data provided by China Ship...

... ABSTRACT This paper describes the development of a computer program based on the 3D panel-based Green Function Method (GFM) to evaluate the ship motions and loads Response Amplitude Operator (RAO) at moderate forward speed. In this approach, the zero speed Green function is used to determine...

... wave frequency upstream oil & gas wavelength parametric roll occur ocean engineering prediction grid variation ship boundary condition parametric roll amplitude forward speed validation study Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering...

... a reliable method for predicting roll damping, this paper uses the unsteady RANS equations combined with the VOF method. A numerical method for simulating harmonic forced roll motion with different forward speeds is established by using overset grid approach. The accuracy of the method is verified...

... quickly reduce the cutting torque and power. Although increasing the cutting depth, hob rotation rate and reducing the ship forward speed can effectively improve the dredging efficiency of the draghead, it is worth noting that these factors are limited by the equipment and operation of the suction dredger...

... Abstract So far, a two-time scale model has been adopted as a time-efficient numerical scheme for the simulation of ship manoeuvrability in waves. However, most of the existing two-time scale models have been applied considering only the effects of ship forward speed in the evaluation of wave...

... headings by open sourced CFD code nonlinear characteristics; large wave steepness increases both pitch and OpenFOAM. This paper compared the difference of water surface and roll, but the effects are totally linearity; low forward speed aggravates wave breaking at oblique stern waves with other wave...

... and the influence of incident wave direction. INTRODUCTION Recent years have seen diverse demands on the prediction of the steady second order wave forces and moments exerting on floating marine structures with or without forward speed. The side drift force and the drift yaw moment (and to a lesser degree...

..., the frequency domain analysis of the hull is carried out, and then the vertical displacement of the swell compensator is studied, which changes with wave period, wave angle, forward speed and so on. The results can effectively predict the ship motion and reduce the risk of damage to the draghead and suction...

... model loaded with tank at zero speed, present numerical methods are validated. Under the head sea conditions with forward speed, the movement effects of ship with or without tank are compared and analyzed. Furthermore, the influence of tank sloshing under different working conditions and the wave...

.... Besides, the induced adverse effects including resonant fluid motions caused by forward speed, and added resistance for a drilling vessel due to the existence of the moonpool are also discussed in detail based on the unsteady RANS-based numerical simulations. The result shows that there is serious vortex...

... equation subsea system replenishment rectangular barge side upstream oil & gas lateral force ship parallel course side vessel engineering coefficient ship motion wigley hull frigate single ship computation supply ship forward speed offshore installation hydrodynamic...

...) used a 3-D Rankine panel method to evaluate the heave and pitch hydrodynamic coefficients, exciting forces and motions of ship models in head waves over a wide range of frequencies with various ship speeds. Gregory (1994) studied diffraction problems of a Wigley hull with/without forward speed in both...

... three available independent input elements which are the forward speed, the rotation angle of yaw rudder and horizontal rudder to achieve the 6-DOF motion of the UUV. Therefore, the manipulation and motion control system of the UUV is called under-actuated. (x,u) Surge (z,w) Heave (y,v...

... data. forward speed wedge drop test model test numerical model matrix nonlinear time history ship frequency force sensor calculation drop test simulation time domain experimental result reservoir simulation sensor backbone equation vbm artificial intelligence numerical...

... nonlinear backbone artificial intelligence hydroelastic response elastic backbone internal load torsion container ship marine transportation forward speed frequency structural model freight & logistics services model test numerical model hull knot Comparisons of Experimental...

... by using STF. Based on numerical results, it could also be concluded that the forward speed effect on the free surface is significant, while the viscous effect is unimportant for the motions. wpc forward speed experiment strip theory fn 0 stf heave response fast sea transportation...