Numerical Simulation of Liquid Sloshing with Different Filling Levels Using OpenFOAM and Experimental Validation
Numerical Simulation of Liquid Sloshing with Different Filling Levels Using OpenFOAM and Experimental Validation
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使用 OpenFOAM 进行不同填充水平液体晃动的数值模拟和实验验证
DOI：
10.3390/w10121752
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发表时间：
2018-11
期刊：
影响因子：
3.4
通讯作者：
Xue Mi-An
中科院分区：
文献类型：
--
作者：
Chen Yichao;Xue Mi-An
利用开源计算流体动力学工具箱OpenFOAM（Open Field Operation and Manipulation）对充液量、激励频率和振幅对液体晃动的影响进行了数值模拟，并通过实验数据进行了充分验证。结果表明，仅在非共振频率范围内，冲击动压力与外激励幅值成正比。压力-频率响应曲线表明，随着填充水平的变化，从“软弹簧”响应到“硬弹簧”响应的过渡过程。发现这种过渡过程受液位与罐长之比的控制，并可以获得临界值。波浪破碎影响了贮箱中晃荡波的周期，并最终改变了线性理论的共振频率。
A series of numerical simulations were performed to explore the influences of filling level, excitation frequency and amplitude on liquid sloshing by using the open source Computational Fluid Dynamics toolbox OpenFOAM (Open Field Operation and Manipulation), which was fully validated by the experimental data. The results show that the dynamic impact pressure is proportional to the external excitation amplitude only in non-resonance frequency ranges. Pressure-frequency response curves demonstrate a transition process from a ‘soft-spring’ response to a ‘hard-spring’ response following the changes of the filling level. Such a transition process is found to be dominated by the ratio of the filling level to tank length and the critical value can be obtained. It is also found that wave breaking influences the period of sloshing wave in tanks and ultimately alters the resonance frequency from the linear theory.
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