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 77
... field records and the finite element results is less than three percent on curvature . The values given for field curvature have been calculated from three successive transponder locations and are subject to the inherent uncertainties of ...
... field records and the finite element results is less than three percent on curvature . The values given for field curvature have been calculated from three successive transponder locations and are subject to the inherent uncertainties of ...
Page 78
... Field / FEM B C Field FEM Field FEM D Field FEM PIPE END # 1 X Y 16.0 12 157.5 113 13 15 114 68 15 42 44 68 24 25 # 2 X Y 49.0 44 150.8 126 46 44 45 58 60 125 87 84 54 55 TARGET AREA # 3 133 PULL - IN CABLE XX Y 83.7 80 141.1 132 81 78 ...
... Field / FEM B C Field FEM Field FEM D Field FEM PIPE END # 1 X Y 16.0 12 157.5 113 13 15 114 68 15 42 44 68 24 25 # 2 X Y 49.0 44 150.8 126 46 44 45 58 60 125 87 84 54 55 TARGET AREA # 3 133 PULL - IN CABLE XX Y 83.7 80 141.1 132 81 78 ...
Page 112
... FIELD a Consider , Fig.1 , waves passing over fluid layer with mean depth hi , under which is a homogeneous and isotropic porous seabed with depth h2 . Beneath this porous medium is an incompressible and impermeable boundary . A ...
... FIELD a Consider , Fig.1 , waves passing over fluid layer with mean depth hi , under which is a homogeneous and isotropic porous seabed with depth h2 . Beneath this porous medium is an incompressible and impermeable boundary . A ...
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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analysis applied Arctic areas assumed axial bending bottom boundary calculated caused coefficient combined compared Conference considered corrosion crack cylinder depth determined developed diameter direction displacement drag effect element Engineering equation example experimental experiments field Figure flow free span frequency function given ground hydrodynamic increase influence installation International layer leak detection length lift force limit liquid load material maximum mean measured Mechanics metal method monitoring movement normal obtained Offshore operating parameters performed period phase pipe pipeline position predicted present pressure problem procedure properties range ratio regular waves relative resistance response riser roughness sand scour seabed shown shows simulated soil solution steel strain stress structural surface Table technique temperature thickness tion values variation velocity wall wave welding