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Keywords: frequency
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Proceedings Papers

Paper presented at the The Thirteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 14–17, 2018
Paper Number: ISOPE-P-18-121
... conditions are checked, and computation results are compared with experimental data. It was checked which frequency range is critical by reviewing the motions of dual crane vessels, and near the yaw motion resonance point of the pipe-type structure has the worst effect on crane vessel s motion. KEY WORDS...
Proceedings Papers

Paper presented at the The Thirteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 14–17, 2018
Paper Number: ISOPE-P-18-053
... elevation undular upstream oil & gas valve-pump system amplitude solitary wave characteristic surface profile reservoir characterization wavemaker surge wave frequency laboratory tsunami basin successive solitary wave gauge superimposition Generation of Undular Bores in Laboratory...
Proceedings Papers

Paper presented at the The Thirteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 14–17, 2018
Paper Number: ISOPE-P-18-100
... regime oscillation zhao frequency downstream square cylinder circular cylinder displacement upstream square cylinder synchronization cylinder response amplitude transverse displacement vibration square cylinder vortex-induced vibration reynolds number synchronization mode...
Proceedings Papers

Paper presented at the The Thirteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 14–17, 2018
Paper Number: ISOPE-P-18-089
... oscillations and reduce the pressure amplitude in a tank. Higher-order frequency components of the hydrodynamic pressure in the tank gradually vanishes as the foam thickness increases. Considering the economy in practice, the thickness of the foam layer should be as small as possible, as long as the sloshing...
Proceedings Papers

Paper presented at the The Thirteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 14–17, 2018
Paper Number: ISOPE-P-18-092
... of different diffusive terms in sloshing problems. Bouscasse et al. (2014) studied the sloshing phenomenon in shallow water with experiment and numerical method of SPH. Delormeet al. (2009) studied the pressure field at the wall with SPH method. numerical model frequency upstream oil & gas tank...
Proceedings Papers

Paper presented at the The Thirteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 14–17, 2018
Paper Number: ISOPE-P-18-133
... requested. energy conservation upstream oil & gas frequency cfd simulation surge response free surface model scale time window resistance head sea superposition time series model test grid transfer function irregular wave ship froude number spectrum reservoir simulation...
Proceedings Papers

Paper presented at the The Thirteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 14–17, 2018
Paper Number: ISOPE-P-18-073
.... ITTC double-parameter wave spectrum is chosen for the study, and the wave spectrum is spilt based on equal-frequency method. The self-developed MPI based in-house code is used for the study. The computations are carried out by a PC cluster. In this study, the finite difference method is used...
Proceedings Papers

Paper presented at the The Thirteenth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 14–17, 2018
Paper Number: ISOPE-P-18-062
... lateral surfaces of the cylinder, exciting time-dependent hydrodynamic forces on the cylinder and hence the vibration. Lock-on phenomenon occurs when the vortex shedding frequency matches the natural frequency of the structure, resulting in larger amplitude response. More hydrokinetic energy is extracted...
Proceedings Papers

Paper presented at the The Twelfth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 4–7, 2016
Paper Number: ISOPE-P-16-112
... as the representative dimension of the system to calculate the reduced velocity, the lock-in regime is narrower that of a single cylinder. Introduction Vortex-induced vibration of a circular cylinder has been studied extensively due to its engineering significance. It is well known that the vortex shedding frequency...
Proceedings Papers

Paper presented at the The Twelfth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 4–7, 2016
Paper Number: ISOPE-P-16-121
... of dolphins kick by numerical simulation, which used the FLUENT software solver and UDF dynamic mesh to simulate the dolphin during it is swimming. Three types of peak-to-peak tail motion amplitudes and frequencies are chosen to simulate. The simulation results of the thrust generated by dolphin fluke motion...
Proceedings Papers

Paper presented at the The Twelfth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 4–7, 2016
Paper Number: ISOPE-P-16-137
... found that over a certain yaw angle range, the normalized vortex shedding frequency, i.e. Strouhal number ( where is the vortex shedding frequency, is the diameter of the cylinder and is the flow velocity component normal to the cylinder axis) and the drag coefficient ( where is the drag...
Proceedings Papers

Paper presented at the The Twelfth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 4–7, 2016
Paper Number: ISOPE-P-16-151
..., displacement response of pipeline in TDZ are given in this paper. The factors of environmental loadings are discussed. Simulation results show that when dynamic load with different frequency is applied on the pipeline, its dynamic response changes a lot. The natural frequencies of TDZ is changed...
Proceedings Papers

Paper presented at the The Twelfth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 4–7, 2016
Paper Number: ISOPE-P-16-025
... natural frequency of the liquid in the elastic tank slightly differs from that in the rigid tank of the same internal size. The model tanks are exited in 1-D harmonic longitudinal motion. Three relative fill levels ( h / L ) of 0.167, 0.333 and 0.500 are considered. The comparisons of the steady-state...
Proceedings Papers

Paper presented at the The Twelfth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 4–7, 2016
Paper Number: ISOPE-P-16-095
... as a technique of expressing the coordinate systems. calculation single vessel openfoam velocity vector fraction variable frequency equation egular ave sing openfoam free water surface experimental result numerical imulation kinematic viscosity reservoir simulation ydrodynamic ehaviour...
Proceedings Papers

Paper presented at the The Twelfth ISOPE Pacific/Asia Offshore Mechanics Symposium, October 4–7, 2016
Paper Number: ISOPE-P-16-081
... Abstract In the offshore environment, aerodynamic and hydrodynamic loads induced by wind, wave and current are directly or indirectly applied to the foundations for offshore wind turbines (OWTs). To avoid resonance, the first frequency of the OWT system must keep away from the frequencies...
Proceedings Papers

Paper presented at the The Eleventh ISOPE Pacific/Asia Offshore Mechanics Symposium, October 12–14, 2014
Paper Number: ISOPE-P-14-080
... body draft narrow gap fluid resonance potential flow model resonant wave height variation laboratory test coefficient dissipation oscillation num frequency wave height experimental data reflection coefficient dependence resonant frequency resonance fluid modeling equation...
Proceedings Papers

Paper presented at the The Eleventh ISOPE Pacific/Asia Offshore Mechanics Symposium, October 12–14, 2014
Paper Number: ISOPE-P-14-026
... production monitoring production control morgunov yu experiment acoustic monitoring east japan sea shelf zone water area ogasawara hardware experimental study propagation time transceiver frequency current velocity flow metering reservoir surveillance analysis center Remote Acoustic...
Proceedings Papers

Paper presented at the The Eleventh ISOPE Pacific/Asia Offshore Mechanics Symposium, October 12–14, 2014
Paper Number: ISOPE-P-14-056
... channel penetration depth gas pipeline anchor risk and uncertainty assessment longgu channel natural frequency risk management offshore pipeline impact energy submarine pipeline ship probability risk assessment midstream oil & gas frequency aground ocean engineering cnpc research...
Proceedings Papers

Paper presented at the The Eleventh ISOPE Pacific/Asia Offshore Mechanics Symposium, October 12–14, 2014
Paper Number: ISOPE-P-14-009
... formula non-dimensional average wave envelope spectrum empirical formula radial sand ridge frequency envelope spectra envelope spectrum Analysis of Wave Envelope Spectrum in Coastal Waters of Radial Sand Ridges Danjun Yu, Weibing Feng, Bin Yang College of Harbor, Coastal, and Offshore...
Proceedings Papers

Paper presented at the The Eleventh ISOPE Pacific/Asia Offshore Mechanics Symposium, October 12–14, 2014
Paper Number: ISOPE-P-14-070
.... frequency corresponding wind speed return period wave height probability distribution copula function gumbel distribution marginal distribution university wind speed joint distribution artificial intelligence upstream oil & gas machine learning annual maximum wave height distribution...

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