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 27
... period equal to twice the half - wave period . The non - dimensional wave parameters are thus calculated as : On the basis of the arguments of the last para- graph the forces exerted on the pipe during the half period No. 2 in Fig . 9 ...
... period equal to twice the half - wave period . The non - dimensional wave parameters are thus calculated as : On the basis of the arguments of the last para- graph the forces exerted on the pipe during the half period No. 2 in Fig . 9 ...
Page 36
... period and the wake period . As shown in Fig.10 ( a ) at the early stage the gap between the pipe and the scour hole is small , and the downstream hill is rela- tively high . The jet is rushing sand particles away . There is no action ...
... period and the wake period . As shown in Fig.10 ( a ) at the early stage the gap between the pipe and the scour hole is small , and the downstream hill is rela- tively high . The jet is rushing sand particles away . There is no action ...
Page 150
... period it was considered that , if the air contains a tracer such as ethyl mercaptan , a leak equivalent to an orifice diameter of 1.3 mm could be detected and located . The sensitivity of pressure to temperature change is 14 Kpa per ...
... period it was considered that , if the air contains a tracer such as ethyl mercaptan , a leak equivalent to an orifice diameter of 1.3 mm could be detected and located . The sensitivity of pressure to temperature change is 14 Kpa per ...
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