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
Model Tests | 3 |
B Bryndum V Jacobsen and D T Tsahalis 9 | 21 |
Scour Under Pipelines | 33 |
Copyright | |
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acoustic velocity analysis Arctic Engineering axial behaviour bending bottom boundary layer buckling cable calculated clamp Cobia compression corrosion crack cylinder deflection deformation developed dew point diameter drag drag coefficient effect elastic equation experimental field Figure finite element flow force coefficients free span frequency friction friction welding function hoop stress horizontal Hydraulic hydrodynamic hydrodynamic forces in-line installation irregular waves length lift coefficient lift force liquid load maximum measured mechanical method monitoring movement nodal analysis operating parameters phase pipe displacement pipe material pipeline predicted pressure procedure ratio response riser roughness SCADA scour sea bed sea floor seabed shown simulated slug soil steady current steel storm strain strain gauges stress structural submarine pipelines surface Technology temperature tion Turning Bands underwater values variation vertical vortex shedding water depth welding zone