基于FPM的液舱晃荡研究

Research on sloshing of liquid tank based on FPM

随着液舱晃荡运动机理的研究深入,舱内液体运动响应和自由液面波形精细模拟成为研究的重点。本文应用无网格方法中的FPM(Finite Point Method)来对液舱晃荡中的动边界及自由液面大变形等问题进行数值求解和图像模拟。以二维液舱晃荡为例,校核运动边界与内部流体粒子点间的运动响应,得到FPM对于边界所受砰击力和内部兴波波高的计算结果以及自由液面模拟图像。将计算结果进行无因次化处理,通过与试验结果进行比对,验证了FPM在液舱晃荡问题中应用的可行性和准确性,也为FPM解决三维复杂液舱晃荡问题中提供铺垫。

With the development of research on sloshing of liquid tank, the motion response and the free surface wave simulation have been focused. In this paper, FPM （Finite Point Method） has been applied into numerical calculation of sloshing in the moving boundary and simulation of free surface deformation. Taking the two -dimensional sloshing tank as an example, interactional response between moving boundary and internal fluid particle points has been checked. Slamming force on boundary, internal wave height and image of free surface have been attained. Taking the computational results into dimensionless, the comparison with the experimental results verify the feasibility and accuracy of application of FPM in the liquid sloshing, and pave the way for FPM to solve the complex 3D liquid sloshing.