... that experiment and numerical calculations agreed relatively well at zero speed cases and the overall tendency was similar at forward speed, but in term of accuracy the numerical calculation at forward speed was insufficient. Therefore, the prediction of wave-induced motions and loads was still restricted...

... on the ship motions at four forward speeds and two drafts is discussed. To validate the numerical results, moonpool resonance frequencies are compared with Molin s (2001) theoretical and Fukuda s (1977) empirical formulas. Numerical results show good agreement with theoretical and empirical formulas...

... 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 Scientific Research Center. The roll decay simulation in calm water is carried out first...

... 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...

... 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 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...

... 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...

... 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...

.... 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...

..., 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...

... gas monetization wavelength hull turbulence model lng numerical method calculation forward speed upstream oil & gas ship external flow field ship motion liquified natural gas frequency simulation boundary condition ship model tank sea condition time domain motion waveform...

.... Radiation and diffraction problems are solved with linearity theorem. And for forward speed problem, both double body (DB) flow and uniform stream (US) linearized computations are carried out. Added mass, damping coefficients, hydrodynamic forces and motions responses of side by side vessels are computed...

...) 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...

.... controller comparison test motion model rudder directional rudder forward speed converge control parameter uuv level rudder automatic operating controller simulation coefficient novel fast terminal fast terminal control system disturbance environment ftsmc terminal A Novel Terminal...

... 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...

... simulation hybrid method coefficient artificial intelligence reservoir simulation forward speed exterior domain xiaowang tong free surface time-domain hybrid method wei sun body surface equation Numerical Simulation of Hydrodynamic Forces by Time-Domain Hybrid Method Wei Sun, Huilong Ren...

... 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...