Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 72
... scour hole in the seabed are transformed into straight lines . As an example , the coordinate system around three cylinders is shown in Fig . 2 . B Αβ CYLINDER CYLINDER CYLINDER α α Fig . 1 n.Vn Fig . 2 t.Vt Local coordinate system ...
... scour hole in the seabed are transformed into straight lines . As an example , the coordinate system around three cylinders is shown in Fig . 2 . B Αβ CYLINDER CYLINDER CYLINDER α α Fig . 1 n.Vn Fig . 2 t.Vt Local coordinate system ...
Page 334
... Scour are reported on several platforms , but has never exceeded the design values . The design values of jackets at 70m water depth have been 2-3m . Build - up of sediments and mud around jacket legs has been reported several times ...
... Scour are reported on several platforms , but has never exceeded the design values . The design values of jackets at 70m water depth have been 2-3m . Build - up of sediments and mud around jacket legs has been reported several times ...
Page 356
... scour . Repeating annual bathymetry surveys therefore do not substantially contribute to our knowledge of the edge of the Ekofisk and West Ekofisk bowls . Bathymetric surveys are also used to check the seabed for irregularities which ...
... scour . Repeating annual bathymetry surveys therefore do not substantially contribute to our knowledge of the edge of the Ekofisk and West Ekofisk bowls . Bathymetric surveys are also used to check the seabed for irregularities which ...
Contents
VORTEX SHEDDING AND VIBRATION | 187 |
OCEAN WAVES AND CURRENT | 209 |
COMPUTATIONAL METHODS | 247 |
Copyright | |
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added mass amplitude analysis approximately average body boundary condition cable calculated circular cylinder components computed correlation density diffraction displacement distribution drag coefficient dynamic effects Ekofisk Engineering experimental field Figure finite element floating flow fluid free surface frequency domain function Green function horizontal hydrodynamic hydrodynamic forces incident wave integral equation irregular waves length lift force linear load low-frequency matrix maximum measured method mode mode shapes mooring motion natural frequency nonlinear obtained Ocean Offshore Structures OMAE open boundary oscillation parameters phase velocity platform predicted present pressure problem random waves ratio response Reynolds number riser Sarpkaya seabed second-order ship simulation small forward solitary wave solution spectral spectrum stiffness surge tank tanker tension tether theory transverse values vector velocity potential vertical vessel vibration vortex vortices water depth wave drift damping wave forces wave height wave profile