矩形液舱横荡流体载荷的Fluent数值模拟

Numerical Simulation of Sloshing Loads on Rectangular Tank Based on Fluent

采用CFD软件Fluent对二维矩形液舱不同舱内水深、不同激振频率时的横荡进行数值计算,并将数值结果与实验结果进行比较。结果表明,Fluent可以模拟自由面的翻卷和破碎运动现象,其对于距自由面较深点处流体载荷的计算结果与实验值相符合,但对于自由面附近点,尤其是舱顶上点处的砰击载荷,其计算结果与实验值差别较大。因此,对大幅晃荡的数值模拟仍需进一步研究。

The sway of a 2D rectangular tank with various depth and excitation frequency was simulated using the Fluent and the numerical results were compared to the experiment results.It shows Fluent can simulate the overturning and breaking phenomenon of free surface,the pressure amplitude of the position deep from the free surface obtained by Fluent agrees well with experiment.But the impact pressure near or above the waterline,especially on the top wall,have much difference with the experimental data.So the numerical simulation of large amplitude sloshing needs further investigation.