Abstract
Violent sloshing induced by excitation with large amplitudes or resonant frequencies may result in structural damage of the liquid-tank or even the overturning of the liquid cargo transport system. Therefore, impermeable and permeable vertical baffles were investigated numerically to suppress sloshing. The numerical simulations were based on the finite element method and arbitrary Lagrangian–Eulerian (ALE) method. The numerical model was verified by the available experimental data, numerical results and linear theoretical results. Based on the study of the effects of impermeable baffle height, amplitude and frequency of excitation on sloshing, the effects of baffle permeability on sloshing were investigated. Importantly, a critical permeability coefficient that was most effective to suppress sloshing was found. In addition, the maximum flow velocities in the tank with a baffle of small permeability coefficient were smaller than those in the tank with an impermeable baffle. While, the maximum flow velocities under a baffle of large permeability coefficient were larger than those in the tank with an impermeable baffle. Vortices were observed in the whole region of the baffle, tank bottom, tank walls and the free surface in the tank with a permeable baffle.
Highlights
Sloshing is a concern in several fields, including marine science and engineering [1,2]
Violent sloshing induced by excitation with large amplitudes or resonant frequencies may result in the structural damage of the liquid-tank or even the overturning of the liquid cargo transport system
Trimulyono et al [8] performed a parametric analysis of smooth particle hydrodynamics (SPH) parameters in a numerical model of sloshing basing on a graphics processing unit (GPU) acceleration technique
Summary
Sloshing is a concern in several fields, including marine science and engineering [1,2]. Xue and Lin [15] and Xue et al [16,17] developed a three-dimensional numerical wave tank model to study sloshing dynamics and related problems In their model, a coupled virtual boundary force–volume of fluid (VBF–VOF) method was proposed to simulate the interaction between free surface wave and the perforated baffle. Abbaspourl and Hassanabad [27] simulated sloshing in a tank filled with porous material and found that porous media was very effective in generating rapid damping to suppress sloshing. He et al [28] simulated and analyzed the effect of the porosity girder on sloshing by comparing the time histories of free surface elevations.
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