... is the main cause of speed loss in waves, is calculated by the near-field method, namely, the direct pressure integration method. In order to validate the developed coupling method, the computed drift force and turning trajectory with the presence of an incident wave are compared with existing experimental...

... of the closed-loop system, a stability proof in the Lyapunov sense is carried out. The theoretical results were validated in numerical simulations using Matlab. These results show that the methodology presented in this work is highly satisfactory for the control gain selection in the trajectory tracking control...

... of velocity, roll, and trajectories. To validate the numerical simulation results, the maneuvers experiments of full appendages ship model with real propeller was carried out in maneuvering tank. Difference between CFD and experiments are mostly within 20% for both maneuvers. The numerical study matched well...

... drifter trajectories were compared with the numerical modelling results in Moreton Bay, Australia. Good correlation with an R2 of 0.73 between drifter data and modelled results was achieved indicating that the same set of model evaluations can be used to compute the particles spreading in further...

... ABSTRACT: The algorithm of autonomous underwater vehicles /AUVs/ trajectories planning for mapping of oceanographic data is considered in the paper. The problem of this research consists in adaptive data sampling by single AUV or group of vehicles for further high-precision mapping...

.... Based on a 2-D hydrodynamic model of Min River Estuary, an oil spill numerical model by using MIKE is developed, taking into account the variables of wind, the spilling position and the occurrence moment. The results show that the sweeping range and the trajectory of the spilled oil are closely related...

... autonomous underwater vehicle ap cycle beacon underwater vehicle algorithm trajectory proceedings auv position Research of Single Mobile Acoustic Beacon Motion Algorithm for Accurate AUV Navigation Fedor S. Dubrovin Laboratory of Unmanned Underwater Vehicles, Engineering School, Far Eastern Federal...

... ABSTRACT: In the given work the method of synthesis of the control law of vectored thruster AUV movement is offered. This control law allowing to provide its exact moving on the desirable trajectory in the conditions of limited capacity of its thruster complex. The given control system...

... and experimental fitted equations. The concentration trajectory, the jet structure including the horseshoe vortex, the counter-rotating vortex pair(CVP) and the decay of the concentration are discussed here. INTRODUCTION The study of a round vertical jet in cross flow is related to the design of coastal...

... -6.48 Heading (deg) 0.0 180.0 0.0 -90.0 15.0 Speed (kt) 13.5 13.5 13.5 13.5 13.5 Col. Avoid. System On Off On On Off Figure Number 13 14 127 40 20 0 20 40 0 20 40 60 x / L y / L Ship 1 Ship 2 (a) Trajectories of the 2 ships 0 500 1000 1500 40 20 0 20 40 : ship 1 : ship 2 (deg) time (sec) (b) Time...

.... This may be predicted on the basis of observed iceberg trajectories, or from a consideration of current and wave forces acting on an iceberg at a given location. For the case of a large structure subjected to impacts by small icebergs, the influence of the structure on the wave-current flow field...

... equation vector rov system trajectory coefficient dynamic analysis dynamic tension newmark method Proceedmgs of the FIrst PacIfIc/Asia Offshore Mechamcs SymposIum Seoul, Korea, 24-28 June, 1990 ' COPYright © 1990 by The InternatIOnal Society of Offshore and Polar Engineers ON THE DYNAMIC ANALYSIS...