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 33
... normal to hole is found . the pipe ols are used in this paper : coefficient , C = ( P - P ) / Y U / 28 - of sand particles o between the lower edge of a om of scour hole in the spectral density distri- ocity ΔΗ Осо 786 σ = head loss ...
... normal to hole is found . the pipe ols are used in this paper : coefficient , C = ( P - P ) / Y U / 28 - of sand particles o between the lower edge of a om of scour hole in the spectral density distri- ocity ΔΗ Осо 786 σ = head loss ...
Page 36
... normal pipe que pipe ( α -30 ° ) . For a normal ges are quite clear . But when 0 , the scour rate in the early nd the final scour depth is are r = 30 ° , 45 ° , 60 ° and 90 ° x = 30 , when scour time t = 30 min , close to the pipe ...
... normal pipe que pipe ( α -30 ° ) . For a normal ges are quite clear . But when 0 , the scour rate in the early nd the final scour depth is are r = 30 ° , 45 ° , 60 ° and 90 ° x = 30 , when scour time t = 30 min , close to the pipe ...
Page 108
during Point Depth Load Normal after a frost rainy period dry period backfill after a after new ( 1 ) fr . 20t 7.63 8.31 5.59 ... normal conditions rear wheel of the 20 T vehicle C Zone C Experimental pipe 20 UPLIFTING FORCE AND MOMENT 108.
during Point Depth Load Normal after a frost rainy period dry period backfill after a after new ( 1 ) fr . 20t 7.63 8.31 5.59 ... normal conditions rear wheel of the 20 T vehicle C Zone C Experimental pipe 20 UPLIFTING FORCE AND MOMENT 108.
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