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
OFFSHORE MECHANICS | 3 |
Seabed Scour Under Pipelines | 33 |
Flow Around and Forces on a Pipeline Near a Scoured | 39 |
Copyright | |
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acoustic velocity analysis Arctic Engineering axial bending bottom clamp boundary layer buckling calculated clad pipes clamp elevation compression Conference on Offshore crack cylinder deflection deformation developed dew point diameter drag drag coefficient effect electrode equation experimental Figure finite element finite element analysis flow force coefficients free span frequency friction function hoop stress hydrodynamic hydrodynamic forces in-line installation leak detection leak detection system length lift coefficient lift force line pipes liquid load maximum measured Mechanics and Arctic method monitoring nodal analysis Offshore Mechanics operating parameters phase pipe displacement pipeline pore predicted present pressure procedure ratio regular waves response riser roughness SCADA scour sea bed sea floor seabed shown simulated soil steady current strain strain gauges stress structural submarine pipelines surface technique temperature thickness tion two-phase flow values variation vertical vortex shedding weld metal