... the capabilities of the CFD solver for recovering the expected physics. The complementary full scale analysis underlines both (i) possible scale effects with regard to basin scale and (ii) free surface impact on the considered package hydrodynamics. Such observations underline the care with which such preliminary...

..., and prediction of green water impact on a FPSO. nante ecole centrale upstream oil & gas aerodynamic coefficient tunnel solver computation wind tunnel test fpso subsea system wind tunnel free surface virtual wind tunnel experiment offshore technology conference blockage effect mesh...

... with the free surface. A consequence is in small radiated wave elevations. In pitch: very low radiated wave field and vortex shedding is observed for small amplitude. But for largest amplitude vortex shedding increases drastically, interacting with free surface. Then an increase of the added mass derived from...

... upstream oil & gas offshore technology conference derivative interaction effect subsea system radiation coefficient coefficient integral equation shuttle mth body chen formulation forward speed interaction problem free surface fpso floating production system green function...

... waves in tanks. Field measurements generally agree better with simulations including all of the second order terms. A possible explanation could be that the long set-up and set-down waves, which are bound to the shorter free surface waves, are not absorbed in the wave basin. Figure 5 compares the crest...

... and the resolution of the free surface the near-field of the vessel or structure. The second area concerns the practical application of the developed flow solvers. In many offshore engineering applications, fluid-structure interaction is important, even at the level of rigid body motions of a single vessel...

... free surface panel show upstream oil & gas internal multiple inverse subsery reflection open issue reservoir characterization weglein feedback method multiple attenuation algorithm internal multiple attenuation wave theoretic approach attenuation seismic data offshore...

... that this is of secondary importance and the main cause of rig instability are the secondary flows in the water, which are generated as the gas rises to the free surface. In this paper numerical simulations of the two phase flows following a release of gas at the bottom of the sea, for one flow rate and two water...

... fracturing crack growth model crack depth fracture mechanics fatigue crack growth crack growth calculation calculation free surface weld toe specimen stress intensity factor geometry aTC 5352 The Calculation of Fatigue Crack Growth in Welded Tubular Joints Using Fracture Mechanics by D.R.V. van...

... platform forristall upstream oil & gas mean water line empirical model extrapolation free surface random directional wave simulation experiment rodenbusch water velocity artificial intelligence scatter plot elevation wavelet amplitude wavelet amplitude wave kinematic...

... neural network rao upstream oil & gas subsea system slwt amplitude orientation artificial intelligence equation tlp surge response wave theory free surface inertia force prediction evaluation wave period coefficient time-domain model surge response linear wave theory...

... vertical circular cylinder body surface circular cylinder linear theory prediction numerical procedure offshore structure subsea system compliant structure isaacson facet center free surface velocity component procedure upstream oil & gas body motion boundary condition cylinder free...

... measured upwards from the still water level. Also let t denote time and ? the free surface elevation above the still water level. The seabed is assumed horizontal along the plane z = -d. The fluid is assumed incompressible and inviscid, and the flow irrotational. (In the usual way, flow separation effects...

...-dimensional case centerline propeller free surface calculation cross section propeller race nozzle tug velocity field efficiency experiment thrust cylinder deviation denote experimental prediction OTC 3838 THEORETICAL AND EXPERIMENTAL PREDICTION OF PROPELLER INDUCED FORCE ON LARGE, TOWED...

... period semisubmersible platform tow speed hull segment encounter period dynamic tow motion upstream oil & gas coordinate system relative platform coefficient jacket platform prediction heave equation stability speed effect hydrodynamic force free surface OTC 3247 DYNAMIC TOW...

.... This paper will have particular application to the members of a jacket that are in the free surface zone. Ore to the wave notion those members will be in and out of the water. Cases of damages on this type of members have been reported from the North Sea. Similar problems can arise for the horizontal trusses...

..., that exists even when there is no free surface, as well as that of the scattering or diffraction of the incident wave. In fact, when the body spans a small fraction of wave length (less than a fifth say), the scattering term is negligible so that F = kpVU d It may thus be found that a diffraction...

... being carried out at elevation, S, above the bottom, where ~ (2) 2 21Tt. .2 1 C (3)L. ~ K. ~ h a = h+n(t) where h is the still water depth and net) is the instantaneous water surface elevation measured from the still water level. This vertical stretching is particularly significant near the free surface...

... determined added mass and damping coefficients for a floating sphere, and ellipsoidal bodies oscillating on the free surface have been considered by Kim 6 . In a later paper Kim 7 calculated the heave, surge, and pitch response for the same scherzo idol bodies to wave excitation. Barakat 8 also treated...

... Company. The platforms consist principally of a large, nearly hexagonal base composed of 19 cylinders, three of which are tapered above the base and extend from the top of the base through the free surface as indicated in Fig. 1. One of the platforms is constructed from 18 meter diameter cylinders ana...