Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 5-6; Volume 8, Parts 5-6American Society of Mechanical Engineers, 1989 - Arctic regions |
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Page 100
... FORCE Fo ( t ) F , ( t ) a ( t ) ( t ) U ( t ) = u ( t ) + Uc F , ( t ) Concrete Coating Steel Pipe Ws Seabed R ( t ) N ( t ) W , Fo ( t ) - DRAG FORCE = 1 / 2P DC U ( t ) | U ( t ) | -SUBMERGED WEIGHT OF PIPE AND CONTENTS F , ( t ) ...
... FORCE Fo ( t ) F , ( t ) a ( t ) ( t ) U ( t ) = u ( t ) + Uc F , ( t ) Concrete Coating Steel Pipe Ws Seabed R ( t ) N ( t ) W , Fo ( t ) - DRAG FORCE = 1 / 2P DC U ( t ) | U ( t ) | -SUBMERGED WEIGHT OF PIPE AND CONTENTS F , ( t ) ...
Page 149
... force on moving pipe : Corrected vertical force on stationary pipe in ( 6 ) : Gravitational acceleration : Keulegan - Carpenter number = U_T / D su : Velocity scaling factor : Pipe velocity calibration error factor in ( 3 ) to ( 5 ) ...
... force on moving pipe : Corrected vertical force on stationary pipe in ( 6 ) : Gravitational acceleration : Keulegan - Carpenter number = U_T / D su : Velocity scaling factor : Pipe velocity calibration error factor in ( 3 ) to ( 5 ) ...
Page 95
... force obtained at the end of the umbilical has to be compensated by the ROV thrusters . The force obtained for the unbuoyed umbilical configuration at current speed of 0.4 m / s has also been plotted in the figure . The static force is ...
... force obtained at the end of the umbilical has to be compensated by the ROV thrusters . The force obtained for the unbuoyed umbilical configuration at current speed of 0.4 m / s has also been plotted in the figure . The static force is ...
Contents
PIPELINE DESIGN AND OPERATIONS | 1 |
PIPELINE INDUSTRY OUTLOOK 89 | 69 |
PIPELINE FORCES DYNAMICS AND STABILITY I | 95 |
Copyright | |
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amplitude analysis applied Arctic Engineering axial base metal bending Buckle length buckling bundle calculated coefficient compressor Conference on Offshore corrosion crack curvature deformation developed diameter displacement ductile effect Eighth International Conference electrodes equation explosive welding failure flaw flow rate gas turbine geometry heat horizontal hydrodynamic hydrodynamic forces hydrogen inertial installation laboratory length lift force line pipe liquid load maximum measured Mechanics and Arctic meters method monitoring natural burial Offshore Mechanics Offshore Technology Conference operation parameters predicted present pressure problem procedure ratio reheated reliability repair resistance response rockdumps sand SAW metal scour depth seabed shown in Figure simulation Snøhvit soft zone soil Sørøya sour gas span Statoil steel stress structural submarine pipelines submerged arc welding Sumer surface Table Technology temperature tion tool trench velocity vertical vibration viscometer viscosity vortex vortex shedding wave