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Keywords: RAO
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Proceedings Papers

Proc. ASME. OMAE2023, Volume 8: Ocean Renewable Energy, V008T09A082, June 11–16, 2023
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2023-106657
... to the differences between predictions and experiments are attributed to tank reflections, standing waves that can occur in long, narrow wave tanks, as well as the thin plate assumption employed in the analytical approach. OSWEC analytical hydrodynamic coefficients RAO foundation forces Proceedings...
Proceedings Papers

Proc. ASME. IOWTC2022, ASME 2022 4th International Offshore Wind Technical Conference, V001T01A017, December 7–8, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IOWTC2022-97410
..., the design aims to stiffly follow water elevation by using shallow floats designed to prevent heave amplification. Regular and irregular motions of the system are studied for various mass distributions to identify deviations from the intended wave following motion. wave following RAO Ansys AQWA...
Proceedings Papers

Proc. ASME. OMAE2022, Volume 7: CFD and FSI, V007T08A037, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-78652
... of the numerical results between the cases with different speeds are performed with the statistical assessment. The fast Fourier transform (FFT) analysis is conducted and the ship motion characteristics in frequency are analyzed. In addition, the response amplitude operators (RAO) for the heave and pitch motions...
Proceedings Papers

Proc. ASME. OMAE2021, Volume 5: Ocean Space Utilization, V005T05A011, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-62122
... diameter CWP. The Response Amplitude Operator (RAO) is calculated by solving the equation of motion and statistics responses in 3 hours are compared with a numerical simulation by OrcaFlex. As the result of the comparison, we observed that the present formula is applicable in the early stage...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 6B: Ocean Engineering, V06BT06A011, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18343
... Abstract Sea-keeping model tests of ships based on transient waves have been widely applied over the past several decades. In order to obtain response amplitude operators (RAOs) of a ship, most of the post-processing of the experimental data uses the fast Fourier transform (FFT) to obtain...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 9: Ocean Renewable Energy, V009T09A050, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18353
... and pitch under multiple scenarios are calculated in time-domain. The results describing the FOWT motions in the form of response amplitude operators (RAOs) and spectral densities are presented and discussed in detail. The results indicate that the loss of the mooring system firstly leads to longdistance...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A053, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18377
... the SCRs and pipelines to be used for a deep draft semi-submersible for the Lingshui 17-2 project. It then presents the S-lay installation vessel HYSY201 and S-lay configuration. The hydrodynamic motion analysis for a Response Amplitude Operator (RAO) was computered for HYSY201 in different environmental...
Topics: Pipelines
Proceedings Papers

Proc. ASME. OMAE2019, Volume 7B: Ocean Engineering, V07BT06A021, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96334
.... Despite the linearized assumption, it is expected that the damping coefficients from wave tests provide a more realistic representation of the roll dynamics than those from typical decay tests. viscous damping seakeeping decay tests RAO irregular waves ESTIMATION OF ROLL DAMPING COEFFICIENTS...
Topics: Damping, FPSO, Waves
Proceedings Papers

Proc. ASME. OMAE2009, Volume 1: Offshore Technology, 1-8, May 31–June 5, 2009
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2009-79024
...) is generally quite small compared to the total damping in the system. Hence, additional damping needs to be added for solving roll motion equation. Roll damping RAO damping factor critical damping Proceedings of the ASME 28th International Conference on Ocean, Offshore and Arctic Engineering...