... the orbital velocity difference in different water depths. This creates a large drag body as it travels through a larger area of water. How to develop a wave glider with low drag and high propulsion is the research focus. frequency wave amplitude surface vehicle wave encounter frequency europe...

... closer to the encounter frequency, resulting in linear springing. Meanwhile, nonlinear springing happens when the encounter frequency is several times as natural frequency. When slamming happens, the transient pressure on the ship hull may lead to local and global effects. According to the definition...

..., the flexibility of the hull has increased. As a result, the natural frequency decreases, and the wave encounter frequency increases during high-speed navigation. This will induce linear or nonlinear wave-induced vibration, which will seriously affect the fatigue life and navigation safety of the hull. It has...

... by a moving ship in a large encounter frequency will probably play an important role in the variation numerical tank. So, the current numerical method can be used in the of the computed result. Hence, in this paper, the computed result is simulation of a ship moving at a constant speed in waves. More details...

... frequency; Nv is the roll compartment is symmetrical about the longitudinal section in the center damping coefficient due to the viscous effect; Nw is wave damping plane of the hull. A vent pipe is arranged on the top of the compartment coefficient at encounter frequency; Frest is the restoring moment; Fext...

... wave direction motion response wave frequency density function wave force vertical acceleration encounter frequency Analysis of the Seakeeping Performance of Icebreaker Based on Maxsurf LI Xing-yu1,2,3, HE Yan-ping1,2,3*, CHEN Chao1,2,3 1. State Key Laboratory of Ocean Engineering, Shanghai...

... response to an approximate deterministic representation of an appropriately large and adequately rich(frequency-wise)load. roll angle ship frequency encounter frequency equation amplitude frequency response curve cruise ship parent ship preliminary design stage artificial intelligence wave...

... need not to be small for small encounter frequencies: lim 0 2 2 33 = (2) and lim 0 2 33 = (3) Table 1. Hydrodynamic coefficients in heave and pitch equations of motion according to strip theory. Coeff. Common part Additional part in OST Additional part in MST 33 33 33 33 35 33 35...

... the target frequency (Hong et al., 2010). In dynamic analysis, resonance occurs when the frequency or its harmonics of an exciting load are equal or close to the natural frequencies n of the structure. Because a ship oscillates with the wave encounter frequency, the exciting frequencies for springing...

...) in structure regime and three-dimensional hydrodynamic model (3D panel model) in hydrodynamic regime. Springing-induced as well as wave-induced vertical, horizontal and torsional moments produced on the hull girders were calculated for a wide range of wave encounter frequencies. It is shown that for the ultra...

... frequencies giving a keel emergence are taken into account. air entrapment wave length encounter frequency ship emergence distribution parameter time prediction enhancement wave frequency frequency vertical relative velocity cgrao extremity amplitude fr 0 calculation intersection point...

... spectral density wave spectrum spectrum encounter frequency forward speed vessel computation wave frequency jonswap hs 5 encounter spectrum swan extreme motion frequency interpolation sea spectrum rao motion spectrum algorithm significant response Algorithm for Finding...

... ABSTRACT Large amplitude roll motion of a ship in heavy beam seas has been investigated experimentally, and a nonlinear feature of ship motions in high waves was demonstrated. It was pointed out that the drift motion induced by high waves changes the encounter frequency and shifts roll...

... frequency. Usually, the drifting velocity is much lower than the wave velocity in small beam waves, and this effect can be considered to be negligible. The present experiments, however, show that the drift motion induced by high waves changes the encounter frequency and shifts roll resonance to higher...

... because of its cost and difficulty of maintaining the data acquisition hardware. In the case of following seas, three true-wave frequencies contribute to the measured power spectrum at certain encounter frequencies, thus the relationship between encounter and true wave frequencies can be described...

... coefficient encounter frequency phase portrait container ship artificial intelligence time history equation Proceedings of the Tenth (2000) International Offshore and Polar Engineering Conference Seattle, USA, May 28-June 2, 2000 Copyright © 2000 by The International Society of Offshore and Polar...

... in the static "One-over-twenty" wave as his main design criteria. ship motion equation experimental data encounter frequency frequency formula oblique wave wave load shipbuilding sea load marine transportation inertial force nonlinear wave load shear force fr 0 strip theory time history...

... and the current on the parameters In regular waves, especially on their amplitude is shown in the paper, because tile drift wave force depends of the wave quadratic amplitude. A sea current in the waved sea changes the encounter frequency for which the drift wave force was calculated. For drift wave force caused...

... theory. The wave pressures and body's motion response yielde c' from 3-D diffraction-radiation computation are for unit wave amplitude with specified encounter frequencies. Consequently, the induced dynamic internal forces at a section calculated through above computation are also for unit wave amplitude...