Study on the Wave Resonance Characteristics in the Narrow Gap of Multiple Floating Structures
Wave resonance occurs in the narrow gap of multiple floating structures(MFSs)under specific wave frequencies.In this paper,a direct numerical simulation(DNS)study on the wave resonance of MFSs is conducted based on OpenFOAM,and relevant physical model tests are carried out.Underwater particle image velocimetry(PIV)results under the wave resonance condition are used to validate the DNS model.The effects of wave parameters(wave height and wave number)and structural parameters(corner shape and gap width)on the wave resonant response in the gap of the two floating boxes are investigated through examples analysis.The fluid energy evolution and the force on two floating boxes are also discussed.The results show that the dimensionless resonant wave height Hg-max/H of two ROUC floating boxes is twice as high as that of REC structures.The resonance frequency changes significantly with the gap width.Finally,the differences in the characteristics of the complex fluid field for different corner shapes of two floating boxes are illustrated under the wave resonant condition,and subsequently,a scheme for suppressing the wave resonance in the gap of the two floating offshore structures is suggested,which provides a scientific reference for the optimal design of MFSs.
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