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Numerical simulation of liquid sloshing in low-filling tank by MPS

ZHANG Yu-xin,WAN De-cheng (State Key Laboratory of Ocean Engineering,School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University,Shanghai 200240,China)  
Liquid sloshing is a kind of nonlinear free-surface flows.In low-filling tank,sloshing shows strong nonlinearity due to the large space for liquid motion.The free surface will happen to be deformed greatly,merged and broken.Simulation of such complicated flows is a challenging task.In this paper,the liquid sloshing in low-filling tank is simulated based on Moving Particle Semi-Implicit(MPS) method.Results show that the liquid impacts the ceiling of the tank,and splashes,when the oscillation frequency is equal to the natural frequency.A large impact pressure on the side wall is observed.At a lower oscillation frequency,the wave in the tank is broken,and turns over.A lower impact pressure on the side wall is measured.Numerical results illustrate that the MPS method can predict the impact behavior induced by liquid sloshing.The calculated pressure is in good agreement with experimental data.The presented MPS method is proved to have good flexibility in dealing with the complex free surface flows with broken and merged waves.
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