Open Access

ARTICLE

Coupled Effects of Incident Waves Forcing and Internal Tank Sloshing on the Dynamics of Twin Floating Bodies

Jialong Jiao¹, Mengyun Jiang¹, Hang Xie^2,3,*, Yuanming Chen¹

1 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510641, China
2 School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200000, China
3 School of Intelligent Manufacturing, Huanghuai University, Zhumadian, 463000, China

* Corresponding Author: Hang Xie. Email:

Fluid Dynamics & Materials Processing 2025, 21(9), 2075-2100. https://doi.org/10.32604/fdmp.2025.069064

Received 13 June 2025; Accepted 12 September 2025; Issue published 30 September 2025

Abstract

The growing demand for ocean space has generated significant interest in multi-body floating systems, where gap resonance in confined regions plays a critical role in ensuring the safety of offshore operations. This study develops a numerical tank model using the Smoothed Particle Hydrodynamics (SPH) method, implemented through the open-source code DualSPHysics, to investigate hydrodynamic resonance in a twin-floater system and to examine the influence of internal tank sloshing on its hydrodynamic characteristics. The hydrodynamic behavior of the gap flow between a fixed twin-floater system in the numerical tank is validated through systematic comparison with experimental data. Subsequently, the wave-induced motions and forces on a twin-floater system are compared with those on a single floater. Furthermore, the effects of internal tank sloshing on the hydrodynamic response of the twin-floater system are explored. A parametric study is conducted to analyze the influence of incident wave frequency on floater motion and tank sloshing dynamics. The results show that the presence of an internal tank can significantly reduce pitch motion and vertical forces on the floating body, while exerting minimal influence on heave motion and horizontal forces. The findings provide new insights into the hydrodynamic performance of twin-floater systems and their interaction with internal sloshing phenomena.

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Keywords

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