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Verification of SubDyn and HydroDyn Results Summery Evan Gaertner
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Case 1: Monopile Distributed Buoyancy
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Case 2: Tripod Buoyancy Distributed Buoyancy: A) Horizontal (M ember 45) B) Vertical, Tapered ( Member 46) C) Angled ( Member 20) Tripod: Total Buoyancy F Bx [N] F By [N] F Bz [N] M Bx [Nm] M By [Nm] M Bz [Nm] HydroDyn-1.113E+022.930E-022.829E+06-1.346E+007.741E+024.194E-02 OTC: HydroDyn*007.330E+06 OTC: STAR-CCM+*007.460E+06 * Includes joint overlap
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Case 2: Tripod Distributed Buoyancy Horizontal Vertical, Tapered Angled
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Case 3: Jacket Total Buoyancy Jacket: Total Buoyancy F Bx [kN] F By [kN] F Bz [kN] M Bx [kNm] M By [kNm] M Bz [kNm] External00-1.96E+04000 Internal00-1.86E+04000 Total00-3.81E+04000 Total (H. Song No Overlap) 00 3.88E+03 HydroDyn
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Case 4: Monopile Morison Loads Current: Linear velocity distribution from 0 to 2 m/s at MSL
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Case 5: Monopile Morison Loads Regular Waves: T = 10s, H s = 6m
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Case 6: Monopile Morison Loads Irregular Waves: JONSWAP T = 10s, H s = 8m
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Case 7: Natural Frequencies Monopile Ansys [Hz] SubDyn [Hz] Difference 10.2900.288-0.80% 20.2900.288-0.80% 32.3652.361-0.17% 42.3652.361-0.17% 56.1266.1340.12% 66.1266.1340.12% 77.1117.106-0.07% 811.48711.414-0.64% 911.68711.7310.37% 1011.68711.7310.37% 1119.05119.4502.10% 1219.05119.4502.10% 1323.03423.3941.56% 1426.82327.2401.56% 1527.38529.9419.33% 1627.38529.9419.33% 1734.88136.1233.56% 1836.02341.24414.49% 1936.02341.24414.49% 2045.21146.6493.18% Tripod Ansys [Hz] SubDyn [Hz] Difference 10.3210.3230.62% 20.3210.3230.62% 32.6492.7503.82% 42.6492.7503.82% 53.8834.0454.17% 63.8834.0454.17% 73.8974.0604.16% 83.9154.0784.17% 93.9154.0784.17% 103.9354.0994.17% 114.3094.4934.26% 124.6024.7994.29% 134.6024.7994.30% 145.5895.7192.33% 156.0046.2624.30% 166.0046.2624.30% 176.1936.4474.11% 186.9417.2304.17% 196.9417.2314.18% 207.3247.6374.27% Jacket Ansys [Hz] SubDyn [Hz] Difference 12.6762.650-0.98% 22.6762.650-0.98% 34.8264.813-0.27% 45.2815.205-1.44% 57.4847.337-1.97% 67.4847.337-1.97% 78.2858.128-1.89% 88.5828.5850.04% 99.0189.0300.13% 109.5759.5830.08% 119.5759.5830.08% 1210.20110.2130.12% 1310.94710.9720.23% 1411.31711.137-1.59% 1511.68011.7050.21% 1611.68411.7050.18% 1711.76811.7940.22% 1811.92911.881-0.40% 1911.92911.881-0.40% 2011.98312.0050.18% To Transition PieceTo Tower Top
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Natural Frequencies, Tripod Tripod OldNew Ansys [Hz] SubDyn [Hz] Difference SubDyn [Hz] Difference 10.3210.3230.62%0.3230.62% 20.3210.3230.62%0.3230.62% 32.6492.7503.82%2.7503.82% 42.6492.7503.82%2.7503.82% 53.8834.0454.17%4.0454.17% 63.8834.0454.17%4.0454.17% 73.8974.0604.16%4.0604.16% 83.9154.0784.17%4.0784.17% 93.9154.0784.17%4.0784.17% 103.9354.0994.17%4.0994.17% 114.3094.4934.26%4.4934.26% 124.6024.7994.29%4.7994.29% 134.6024.7994.30%4.7994.30% 145.5895.7192.33%5.7192.33% 156.0046.2624.30%6.2624.30% 166.0046.2624.30%6.2624.30% 176.1936.4474.11%6.4474.11% 186.9417.2304.17%7.2304.17% 196.9417.2314.18%7.2314.18% 207.3247.6374.27%7.6374.27%
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Case 8: Reaction Loads Ansys [N] SubDyn [N] Difference Monopile 8.5610E+068.5577E+060.04% Tripod 1.4972E+071.4729E+071.62% Jacket 5.7942E+065.6957E+061.70% Under Self Weight
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OC4 Paper: Jacket Masses Figure 2: HydroDyn Mass (t) RNA350 Tower Jacket671.6243
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OC4 Paper: Jacket Masses Figure 3: HydroDyn Mass (t) Hydrodynamic added mass to MSL-3,883.8 Water mass in free flooded legs to MSL183 Growth mass189.84
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