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
... LIFT 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 ) ...
... LIFT 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
... Lift coefficient ( time - dependent ) : Inertia coefficient : Soil gradation number : Relative density of soil spectrum : Period , regular waves : Vertical force on stationary pipe been : Vertical ( lift ) force on moving pipe ...
... Lift coefficient ( time - dependent ) : Inertia coefficient : Soil gradation number : Relative density of soil spectrum : Period , regular waves : Vertical force on stationary pipe been : Vertical ( lift ) force on moving pipe ...
Page 163
... force peaks are narrower than the measured , for both the AGA and PIPESTAB ... lift forces measured and predicted by a ) AGA , b ) MOD - AGA models , for ... lift forces , Table 3 , by 15 - 20 % for K_ = 50 , M_ = 0 and 20-25 % for K = 50 ...
... force peaks are narrower than the measured , for both the AGA and PIPESTAB ... lift forces measured and predicted by a ) AGA , b ) MOD - AGA models , for ... lift forces , Table 3 , by 15 - 20 % for K_ = 50 , M_ = 0 and 20-25 % for K = 50 ...
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