Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1992 - Arctic regions |
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Page 312
... flow , In - flow OOI o 10 20 30 40 Fig . 1. Schematic sketch of a cross - section of the five - riser bundle ; Dc / D = 1.6 , R / D = 2.95 . 100 Acceleration amplitude ( g ) ( b ) 0-1 Cross - flow In - flow - Uc OOI 10 30 40 20 U ( m ...
... flow , In - flow OOI o 10 20 30 40 Fig . 1. Schematic sketch of a cross - section of the five - riser bundle ; Dc / D = 1.6 , R / D = 2.95 . 100 Acceleration amplitude ( g ) ( b ) 0-1 Cross - flow In - flow - Uc OOI 10 30 40 20 U ( m ...
Page 312
... flow [ 8 ] and later in water - flow [ 9 ] . These results , summarised in the next section , showed that even for a sensibly rigid central riser , given the correct orientation of the oncoming current , fluidelastic instability is ...
... flow [ 8 ] and later in water - flow [ 9 ] . These results , summarised in the next section , showed that even for a sensibly rigid central riser , given the correct orientation of the oncoming current , fluidelastic instability is ...
Page 315
... flow -Cross - flow 0.5 0.0 -0.4 -0.2 0.0 Fig . 5 . 0.2 ( b ) Displacement ( D ) 0.4 Variation of ( a ) the measured CL and ( b ) CD with in- flow or cross - flow displacement for the peripheral riser ; 235 ° , Re = 3.2 x 104 . is less ...
... flow -Cross - flow 0.5 0.0 -0.4 -0.2 0.0 Fig . 5 . 0.2 ( b ) Displacement ( D ) 0.4 Variation of ( a ) the measured CL and ( b ) CD with in- flow or cross - flow displacement for the peripheral riser ; 235 ° , Re = 3.2 x 104 . is less ...
Contents
OCEAN WAVES AND CURRENT | 1 |
HYDRODYNAMIC FORCES | 69 |
17 | 90 |
Copyright | |
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added mass amplitude analysis axial behaviour boundary bubble buoy cable calculated Campos Basin coefficients compliant tower components configuration crane vessels cylinder damping model damping ratio developed direction displacement distribution domain drag coefficient drag force dynamic response effect Engineering equation estimated experimental Figure floating flow fluid heave motion hydrodynamic hydrodynamic damping installation interaction internal wave irregular waves Karunakaran length linear load matrix measured method modal mode model testing module natural frequency natural period nondimensional nonlinear obtained Ocean Offshore Structures operations oscillation parameters peak pipe pipeline platform pontoon potential predicted pressure ratio Rayleigh Rayleigh distribution resonant riser rotation second-order semisubmersible ship shown simulation spectra spectrum stiffness Stirling engine subsea surge tank technique tendon tension tethers transfer function values vector velocity velocity potential vertical vessel vibration water depth wave force wave height wave period