... and wire tension according to wave 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...

... 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...

... cylinder. A typical phenomenon observed in the VIV of a circular cylinder is lock-in, characterized by the synchronization of vortex shedding frequency which synchronizes with the frequency of body oscillation (Williamson and Govardhan, 2004). Comprehensive investigations have been carried out in various...

... that the floating foam layer can efficiently damp the free surface 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...

... 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...

... 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...

.... 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...

... 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...

... 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...

... 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...

... 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...

..., 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...

... 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...

... 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...

... 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...

... test coefficient dissipation oscillation num frequency wave height experimental data reflection coefficient dependence resonant frequency resonance fluid modeling equation of state subsea system incident wave height energy dissipation Dissipative Effects of Resonant Waves...

... 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...

... 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...

... 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...

.... 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...