Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 14American Society of Mechanical Engineers, 1995 - Arctic regions |
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Page 149
... damping term in equation 12 consists of two components ; the applied damping , BA , which is provided by the turbine , and the secondary damping , B2 , caused by the motion of the column . The secondary damping consists of two further ...
... damping term in equation 12 consists of two components ; the applied damping , BA , which is provided by the turbine , and the secondary damping , B2 , caused by the motion of the column . The secondary damping consists of two further ...
Page 371
... damping , and a spring stiffness . Power Spectrum Density ( m / s ) / Hz , RMS . 0.1 0.01 0.001 0.0001 0.00001 wwwwww www 0.000001 0.1 0.2 0.3 0.4 0.5 Frequency ( Hz ) 0.6 0.7 0.8 0.9 1.0 Figure 2 : Typical frequency spectrum measured ...
... damping , and a spring stiffness . Power Spectrum Density ( m / s ) / Hz , RMS . 0.1 0.01 0.001 0.0001 0.00001 wwwwww www 0.000001 0.1 0.2 0.3 0.4 0.5 Frequency ( Hz ) 0.6 0.7 0.8 0.9 1.0 Figure 2 : Typical frequency spectrum measured ...
Page 447
... damping coefficients ( cf. Fig.3-6 ) . It is also found that wave drift damping dominates viscous damping except the neigh- borhood of ka = 0.8 . Examined in more detail , simulated values are slightly larger than the experimental ...
... damping coefficients ( cf. Fig.3-6 ) . It is also found that wave drift damping dominates viscous damping except the neigh- borhood of ka = 0.8 . Examined in more detail , simulated values are slightly larger than the experimental ...
Contents
OCEAN WAVES | 1 |
Aarsnes | 55 |
VOLUME IA OFFSHORE TECHNOLOGY | 65 |
Copyright | |
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acceleration analysis AXIWAVE biplane blade boundary layer calculated circular cylinder comparison compliant towers components computed corresponding crest criteria damping direction distribution drag drag coefficient dynamic effects Engineering equation estimated experimental Figure filter flow fluid force coefficients Fourier free surface frequency fuzzy given hindcast horizontal velocity hydrodynamic impact force in-line incident wave irregular Islay KC number kinematics lift force linear load Loop Current maximum measured method Morison Myrhaug NewWave non-linear obtained ocean waves Offshore Structures orifice oscillating parameters planetary boundary layer plate platform predicted pressure rad/s random wave ratio regular waves Scatter Parameter sea wave second-order shear stress ship shown simulation spectra surface elevation term tests turbine turbulence values velocity potential vertical Volume I-A Walsh function water depth wave elevation wave energy wave height wave kinematics wave power wave profile wave spectrum wave theory wave train wind