... hydrodynamic aspect coefficient equation otc 6438 van den boom flexible riser riser section fluid force simulation displacement cylinder formulation offshore technology conference inertia upstream oil & gas drag force oscillation frequency riser OTC 6438 Hydrodynamic...

...) OTC 5531 (8) (7) + 1/2 ~j(T-2~T) +5/2 X.(T) - 2x (T-~T) -J -j 2 +~ it.(THT) 2 -J T (T) = instantaneous length of segment j=~oj(l~) j or: The fluid forces acting on the submerged part of the line originate from line motions (fluid reac- tive forces) and water particle motions due to waves...

...aTC 5099 Measured Fluid Forces on an Accelerated/Decelerated Circular Cylinder by A.A. Bird, consultant, and L.F. Mockros, Northwestern U. Copyright 1986 Offshore Technology Conference This paper was presented at the 18th Annual OTC in Houston, Texas; May 5-8, 1986. The material is subject...

... upstream oil & gas test cylinder drag force transverse oscillation fluid force riser amplitude transverse direction subsea system equation uniform flow coefficient cd cylinder oscillation cd value coefficient variation keulegan-carpenter number inline drag coefficient...

.... The coefficient of drag was determined from the simultaneous measurements of the horizontal water particle kinematics and the fluid force on the cylinder. The superposition of the velocity fields of a wave in still water and the measured current were used to predict the total velocity field used by the Morison...

... ABSTRACT A quasi-linear frequency domain analysis of the coupled OTEC CW pipe and platform system has been developed. A finite element model of pipe structural dynamics is employed and the platform is modelled by contemporary ship or stable platform motion theory. Nonlinear fluid forces...