Results |
 
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Results |
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You can use the hyperlinks below to browse through the results comparisons for the subset of OC4 Phase I load cases considered. Official results from OC4 were obtained from the IEA (International Energy Agency) Wind website, or more specifically, the IEA Wind Task 30 results library. Results from Flexcom are presented alongside results from software tools used in OC4 Phase I. For clarity, Flexcom results are overlaid as the last data series in each graph with the data series shown in dashed red to be distinctive.
Load Case |
Description |
Wind |
Wave |
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Comparison of structural masses (jacket, transition piece, tower and RNA) and additional masses (marine growth, water in flooded legs and hydrodynamic added mass imposed by water surrounding the structure) |
No air |
No water |
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Eigenanalysis |
No air |
No water |
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Static simulation including gravity and buoyancy to MSL |
No air |
Still water |
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Periodic time-series solution |
Steady, uniform, no shear, Vhub = 8 m/s |
No water |
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Periodic time-series solution |
No air |
Regular Airy: H = 6 m, T = 10 s |
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Periodic time-series solution |
No air |
Regular stream function (Dean, 9th): H = 8 m, T = 10 s |
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OC4 P1 LC2.4a |
PDF, DEL, power spectra |
NTM (Kaimal): Vhub =Vr = 11.4 m/s, sx = 1.68 m/s, sy = 1.34 m/s, sz = 0.84 m/s, Lk;x = 340.20m, Lk;y = 113.40m, Lk;z = 27.72m, Lc = 340.20m, Wind shear: a = 0.14 |
No water |
OC4 P1 LC2.4b |
PDF, DEL, power spectra |
NTM (Kaimal): Vhub = 18 m/s, sx = 2.45 m/s, sy = 1.96 m/s, sz = 1.23 m/s, Lk;x = 340.20m, Lk;y = 113.40m, Lk;z = 27.72m, Lc = 340.20m, Wind shear: a = 0.14 |
No water |
OC4 P1 LC2.5 |
PDF, DEL, power spectra |
No air |
Irregular Airy: Hs = 6 m, Tp = 10 s, Pierson-Moskowitz wave spectrum |
OC4 P1 LC3.2 |
Periodic time-series solution |
Steady, uniform, no shear: Vhub = 8 m/s |
No water |
OC4 P1 LC3.4a |
PDF, DEL, power spectra |
NTM (Kaimal): Vhub =Vr = 11.4 m/s, sx = 1.68 m/s, sy = 1.34 m/s, sz = 0.84 m/s, Lk;x = 340.20m, Lk;y = 113.40m, Lk;z = 27.72m, Lc = 340.20m, Wind shear: a = 0.14 |
No water |
Periodic time-series solution |
No air |
Regular stream function (Dean, 9th): H = 8 m, T = 10 s |
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OC4 P1 LC4.5 |
PDF, DEL, power spectra |
No air |
Irregular Airy: Hs = 6 m, Tp = 10 s, Pierson-Moskowitz wave spectrum |
Periodic time-series solution |
Steady, uniform, no shear:, Vhub = 8 m/s |
Regular stream function (Dean, 9th): H = 8 m, T = 10 s |
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PDF, DEL, power spectra |
NTM (Kaimal): Vhub = 18 m/s, sx = 2.45 m/s, sy = 1.96 m/s, sz = 1.23 m/s, Lk;x = 340.20m, Lk;y = 113.40m, Lk;z = 27.72m, Lc = 340.20m, Wind shear: a = 0.14 |
Irregular Airy: Hs = 6 m, Tp = 10 s, Pierson-Moskowitz wave spectrum |