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Dual effects of a freely floating body on sloshing: Suppression, amplification, and coupled response under harmonic excitation
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DOI：10.1016/j.oceaneng.2026.127509.png)
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Abstract
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• A novel freely floating body suppresses liquid sloshing in rectangular tanks, reducing wave height across a broad frequency range. • The floating body introduces two new fluid–structure coupled resonant modes. • Under resonant conditions, system damping increases by 4–7 times, improving energy dissipation via body motion. • The body shows distinct motion patterns under different resonant modes, with pitch direction varying with frequency. • Drift instability occurs at higher water depths and amplitudes, showing unidirectional or reciprocating drift behaviors.
Keywords:
Sloshing suppression
Floating body dynamics
Resonant frequency shift
Fluid-structure interaction
Dual-effect damping
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