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Keywords: heave
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Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-151
.... upstream oil & gas riser mean deformation healthy stage deformation platform steady stage riser tension subsea system mooring system frequency motion amplitude time domain dynamic response amplitude riser 1 loading heave balance position ocean engineering cable platform-mooring...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-059
... damping levels vary with sea states and the results obtained with experiments and simulations are compared, focusing on the heave, roll and pitch response spectrum and short-term statistics, it is shown that the frequency spectrum analysis method may underestimates the response and ignores the pitch-surge...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-172
... motions (including heave and roll/pitch) amplitude in the coupled load condition is a little larger than those observed from the pure wave cases. A quasi-lock-in phenomenon and nonnegligible mean displacement in heave is observed in the coupled load case, and vortex-induced force is supposed as the reason...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-459
..., and the fatigue hot spot damage can be obtained through the directly measured motion data. machine learning motion response heave network model artificial intelligence output data hot spot fatigue damage fatigue damage prediction neural network prediction sea state response spectrum calculation...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-529
... good agreement assimilation improved nsm self-organizing state-space model enkf time-domain 3-dof ship motion modeling state estimation heave Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-391
... situation, lock-in happens if VIM frequency is identical to sway frequency. In that case, lock-in of heave, pitch, yaw as well as sway, roll may occur due to coupled effect if the floating body is strongly connected with tendons. And, it may affect fatigue damage of tendons. The objective of this study...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1286
... to account for permafrost thawing effects, thus subsidence from permafrost thawing would cause additional strains which could lead to failures (example is the 2020 Norilsk diesel oil tank failure near Norilsk in Russia). upstream oil & gas pipeline unfrozen state piping design heave oil well...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1106
... physical model tests and numerical simulation techniques. The results show that in non-self-propelled conditions, the ship's heave increases with the increase of wave, while under the same wave action, there is little difference in heave and sink under different ship draft conditions. However, when...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3174
... al. (2019) used overset grids technique to predict the wave-induced forces on ships and the surf-riding/broaching phenomena in irregular stern quartering seas based on RANS method. upstream oil & gas simulation green water ship motion response time series engineering heave...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1173
... to inaccurate description of the dynamic and stochastic characteristics of responses. subsea system social responsibility fish cage wind energy sustainability rao heave drag force energy conservation renewable energy wamit wind turbine numerical model pitch rao surge drag coefficient...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-446
...) of the motion responses under freak and random waves. The energy parameters δ E of surge, heave and pitch under freak wave are1.07∼2.48, 1.05∼1.88, 0.54∼1.65 times of those under random wave. The duration for dozens wave periods of the motion response in low frequency under freak wave can be regarded...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-074
...-noise wave test arctic engineering mooring system model test smod coefficient simulation vlf seabed condition motion response calculation free decay test engineering water depth single module heave sway natural period subsea system wave test constant water depth type vlf Motion...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-035
... responses. The 1 st harmonic amplitude and corresponding phase for heave and pitch motions are analyzed in detail. Furthermore, the wave patterns are visualized to discuss the evolution of the bow wave. INTRODUCTION The regulations of ship Energy Efficiency Design Index (EEDI) (MEPC, 2008...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-005
.... The present numerical results are obtained using open-source CFD with waves generated via linear superposition of first order wave components, derived from empty tank data. Two geometries are considered and the effect of wave steepness on surge, heave and pitch motion, along with the load in the mooring...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-689
... to the motion of the structure. The potential theory is used for interpreting the wave exciting and inertial forces. roll motion mooring system wave frequency fe model heave resonance frequency bridge input wave frequency prototype model steady-state condition unit length experiment water...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-012
... interaction hemispherical cylinder numerical simulation float motion focus wave profile upstream oil & gas boundary amplitude experiment surge empty tank heave in-house code wave interaction wave profile cylinder experimental data simulation subsea system Focused Wave Interaction...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-404
... sustainable development todo semi-submersible platform sea state maxima response social responsibility wind energy pontoon mexico renewable energy heave wind turbine concept design fpso subsea system A Parametric Study of a Semi-submersible Platform for an Offshore Wind Turbine in Mexican...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-507
... and the performance of a planing hull in terms of seakindliness, safety and powering. Full scale heave and pitch transfer functions, derived from the proposed general integrated analysis, are compared to results obtained from model scale tests in regular head waves. A focal point in the consistency of the results...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-434
... that the peak of spectrums could be shifted to a higher frequency by increasing the rotor rotation velocity. In addition, the heave and pitch response amplitudes in time domain as well as heave, sway and surge motion in frequency domain could be changed with the changing of heading angle of wind. Huijs...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-499
... conditions. significant value artificial intelligence sea condition machine learning htf method amplitude lstm method neural network sea state deep learning heave time series four-level sea condition estimation calculation lstm model pitch motion follow eq ship motion deterministic...

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