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
... direction is normal to axis , an extreme scour hole is found . NOMENCLATURE the pipe The following symbols are used ... direction and the pipe axis ( cf. Fig . 1 ) ) on the scour is rather limited . In previous studies the flow direction ...
... direction is normal to axis , an extreme scour hole is found . NOMENCLATURE the pipe The following symbols are used ... direction and the pipe axis ( cf. Fig . 1 ) ) on the scour is rather limited . In previous studies the flow direction ...
Page 36
... direction . Soon , the scour process under a pipeline can be considered as two - dimen- sional . The scour process ... direction as the flow direction , more sand particles are removed away and the scour hole becomes larger . Scour under ...
... direction . Soon , the scour process under a pipeline can be considered as two - dimen- sional . The scour process ... direction as the flow direction , more sand particles are removed away and the scour hole becomes larger . Scour under ...
Page 81
... direction at the seafloor may also be different from the wave direction . To calculate pipe movement , the storm wave is combined with the storm - driven current the wave direction . PIPELINE CUMULATIVE MOVEMENT CALCULATION PROCEDURES ...
... direction at the seafloor may also be different from the wave direction . To calculate pipe movement , the storm wave is combined with the storm - driven current the wave direction . PIPELINE CUMULATIVE MOVEMENT CALCULATION PROCEDURES ...
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