The semi submersible floating wind turbine platform can be suitable for most offshore sea conditions and has good development prospects. However, in the design and construction process, it is necessary to consider the free attenuation motion response analysis of its foundation to determine its natural frequency. This article uses the ANSYS AQWA Workbench software as a research tool to study the motion response of the OC4 DeepCwind three pontoon floating fan foundation. A simulation was conducted on the free attenuation motion of a three pontoon floating foundation under the action of only ocean current drag force within 1800 seconds. The law of free attenuation motion on the heave degree of freedom of the floating foundation was explored, and the natural vibration frequency of the structure was calculated, providing a basis for the evaluation of its self storage safety and working stability.

Chen Runzhou. An AQWA Method for Determining the Natural Frequency of Offshore Floating Fans Based on Free Attenuation Analysis. International Journal of Frontiers in Engineering Technology (2023), Vol. 5, Issue 9: 58-66. https://doi.org/10.25236/IJFET.2023.050911.

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