... investigated by using commercial software OrcaFlex (Zhang, 2015), and the experimental results of Huang et al (1987) were further verified. stability analysis subsea system engineering marine transportation matrix simulation oscillation tanker frequency motion time domain simulation wave 180...

... methods. In the frequency domain calculations, wave frequency motion, low frequency motion, static heel and setdown, and wave crest amplification are all considered. The low frequency motions due to wave and wind are estimated with analytical methods, respectively. The wave crest amplification factor...

... of the proposing task space based weathervaning control algorithm for DP vessels under significant changes of environmental condition on the ocean. frequency motion subsea system nonlinear frequency upstream oil & gas task space equation control algorithm lyapunov stability theory space...

... equation thruster controller fpso frequency motion upstream oil & gas matrix experiment control algorithm dp vessel numerical simulation simulation A Robust Dynamic Positioning Control Algorithm and Its Validation through Experiment and Numerical Simulation 1,2Young-Shik Kim, 1Yun-Ho Kim...

.... wave groupiness wave envelope spectrum moored ship surge motion frequency random wave motion spectrum marine transportation equation simulation gfh 0 spectrum frequency motion wave group groupiness engineering mooring system natural frequency wave force subsea system motion response...

... carrier midstream oil & gas simulation program reaction force wave exciting force drift force freight & logistics services characteristic curve fender turret test result operation fender reaction force frequency motion floater liquified natural gas coefficient subsea system lng...

... the restoring force of all the system. dynamic equation multi-rigid analysis method model test mooring system fpso system floating production system longitudinal numerical simulation upstream oil & gas shallow water motion performance fpso yoke system frequency motion motion equation...

... that methodologies based on uncoupled analysis don't consider the interaction between the nonlinear dynamic behaviour of the hull and the mooring lines and risers, ignoring important effects such as interaction between the low frequency motions of the floating unit and the current load on lines and risers...

... technique frequency motion upstream oil & gas model test time step Investigation on Hydrodynamic Performance of a Turret Moored FPSO by Using Hybrid Model Test Technique Huoming Zhang,, Jianmin YanG, Longfei Xiao The State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University...

... is then used to highlight the limitation of model testing, especially with regards to mooring leg truncation and turbulent current. mooring system numerical analysis line 2 wave frequency motion model test stiffness slow drift motion limitation coefficient fpso response contribution...

...-frequency motion of the surface vessel, the FIR digital filter is introduced to a PID-based controller. It can be shown numerically that the high frequency component of the ship's motion can be effectively filtered out by using the FIR low pass filter. KEY WORDS: Deep-sea mining buffer, Thrust control, Mode...

... formulation riser upstream oil & gas frequency configuration wave frequency deformation coupling effect floater behaviour frequency motion hydrodynamic load floater stiffness dynamic analysis subsea system equation floater motion water depth dynamic behaviour Proceedings of the Eighth...

... are verified through the model tests and the effects of low frequency motion filters are investigated. INTRODUCTION As deep sea operations grow up, it is expected that the use of DPS increases. Furthermore, it is required that the DPS is capable of more sophisticated and complicated missions...

.... cargo handling experiment instrument allowable ship motion moored ship motion field measurement harbour frequency motion high frequency motion arrangement cargo application ship motion multi camera tracker accuracy field observation Proceedings of the Seventh (1997) International...

... these motions with the line specimens. upstream oil & gas carriage oscillator subsea system mooring system oscillation direction specimen drift frequency drag coefficient frequency frequency motion oscillation line hydrodynamic inline lin university college london london hf motion...

... frequency range (see Fig.12). platform thruster sway transfer function subsea system wave frequency range oblique incident wave equation amplitude mooring system model experiment frequency motion artificial intelligence slow drift oscillation upstream oil & gas controller surge...

... of the tests the range was determined, in which the line dynamic characteristics can be approximated by means of static characteristics. It was shown that for calculations of low frequency motions and loads in lines for the moored small geological vessel, the static characteristics of the line can be used...

... been used as one of standard models for comparative study in FPS 2000 workshop(1989, Norway). The results show that there is a big difference in slow motion amplitude depending on the presence of the wave frequency motion in the calculation of viscous drag. This fact implies that the fast motions also...

... drift forces. the moored vessel performs low-frequency motions of velocity that have influence on drift force. This velocity also affects the slowly-varying drift forces. The joint action of the sea current and the slow motions on the wave drift force is considered in the form of linear coefficients...

... motion phase angle low frequency motion frequency tanker amplitude equal frequency Proceedings of the Second (1992) International Offshore and Polar Engineering Conference San Francisco, USA, 14-19 June 1992 Copyright © 1992 by The International Society of Offshore and Polar Engineers ISBN 1...