Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 5American Society of Mechanical Engineers, 1988 - Arctic regions |
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Page 13
... force coef- ficients from the Fourier analysis , the measured for- ces were normalized by pDU2 , U being the wave ... lift coefficients ( CD , CM CL ) ( CHn ' * Hn ' Cvn vn 2 ) 3 ) Fourier coefficients and associated phase angles Extreme ...
... force coef- ficients from the Fourier analysis , the measured for- ces were normalized by pDU2 , U being the wave ... lift coefficients ( CD , CM CL ) ( CHn ' * Hn ' Cvn vn 2 ) 3 ) Fourier coefficients and associated phase angles Extreme ...
Page 20
... force , and large lift forces may occur in half periods with small velocities when the preceding half periods are ... force is good , and larger values for the lift force are found in the model tests . The maximum lift force coefficients ...
... force , and large lift forces may occur in half periods with small velocities when the preceding half periods are ... force is good , and larger values for the lift force are found in the model tests . The maximum lift force coefficients ...
Page 44
... lift force : The larger the strength of the vortices shed , the larger the fluctuating lift force . Since the vortices shed from the pipe become stronger and stronger as the scour progresses , the fluctu- ating lift force should ...
... lift force : The larger the strength of the vortices shed , the larger the fluctuating lift force . Since the vortices shed from the pipe become stronger and stronger as the scour progresses , the fluctu- ating lift force should ...
Contents
OFFSHORE MECHANICS | 3 |
Seabed Scour Under Pipelines | 33 |
Flow Around and Forces on a Pipeline Near a Scoured | 39 |
Copyright | |
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acoustic velocity analysis Arctic Engineering axial bending bottom clamp boundary layer buckling calculated clad pipes clamp elevation compression Conference on Offshore crack cylinder deflection deformation developed dew point diameter drag drag coefficient effect electrode equation experimental Figure finite element finite element analysis flow force coefficients free span frequency friction function hoop stress hydrodynamic hydrodynamic forces in-line installation leak detection leak detection system length lift coefficient lift force line pipes liquid load maximum measured Mechanics and Arctic method monitoring nodal analysis Offshore Mechanics operating parameters phase pipe displacement pipeline pore predicted present pressure procedure ratio regular waves response riser roughness SCADA scour sea bed sea floor seabed shown simulated soil steady current strain strain gauges stress structural submarine pipelines surface technique temperature thickness tion two-phase flow values variation vertical vortex shedding weld metal