## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1990 - Offshore structures |

### From inside the book

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Page 22

Figure 9(a) shows

frequency. The target frequency spectrum is included to indicate the distribution

of wave energy with frequency. The mean wave direction is resolved to within 2

deg ...

Figure 9(a) shows

**measured**and target mean wave direction as a function offrequency. The target frequency spectrum is included to indicate the distribution

of wave energy with frequency. The mean wave direction is resolved to within 2

deg ...

Page 583

SWATH 1 Model in head seas (Fn=0.13) °

0123456789 10 Non-dim. Enc. Frequency Fig 28. SWATHI Model in head seas (

Fh=0.26) io-i M 0.8 I e o.< 0.0 °

SWATH 1 Model in head seas (Fn=0.13) °

**Measured**Potential Inc. Viscous0123456789 10 Non-dim. Enc. Frequency Fig 28. SWATHI Model in head seas (

Fh=0.26) io-i M 0.8 I e o.< 0.0 °

**Measured**Potential Inc. Viscous i □ i □ i 'T 01 ...Page 584

Frequency Rg 40. SWATH2 Model in head seas (Pn=0.26) 10 OJ 0.4 0.0 Inc.

Viscous I □ i □ i □ i ' r 0123456769 10 Non-dim. Enc. Frequency Fig 43.

SWATH2 Model in ...

**Measured**Potential Inc. Viscous i i i □ i 0123*56789 10 Non-dim. Enc.Frequency Rg 40. SWATH2 Model in head seas (Pn=0.26) 10 OJ 0.4 0.0 Inc.

Viscous I □ i □ i □ i ' r 0123456769 10 Non-dim. Enc. Frequency Fig 43.

SWATH2 Model in ...

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added mass amplitude analysis array calculated circular cylinder component crest damping coefficient direction displacement distribution domain drag coefficient drag force drillship dynamic effect element equation estimated flexible riser floating flow fluid force coefficients forces acting foroe forward speed free surface heave horizontal hydrodynamic hydrodynamic forces incident wave integral irregular Kc number lift force linear load low-frequency low-frequency oscillation matrix maximum measured method mooring line motion nonlinear obtained Offshore Mechanics Offshore Structures Offshore Technology Conference oscillation oscillatory parameters pile plate prediction pressure problem ratio Rayleigh distribution regular waves response Reynolds number Sarpkaya seastates second-order semisubmersible ship shown in Figure simulation solution spectra spectrum surge tension transfer function transverse vector velocity potential vertical viscous vortex vortex shedding vortices water depth wave amplitude wave excitation wave force wave frequency wave height wave number wave period wave power