摘要
提出一种新颖有效的网格移动算法,使用任意拉格朗日-欧拉(ALE)有限元方法对球形贮箱中三维液体大幅晃动问题进行数值模拟。对接触线网格及自由液面网格指定其运动轨道,对湿壁面网格采用代数更新算法,对域内网格采用Laplace方程对网格速度进行平滑。同时采用基于特征线的时间分裂(CBS)格式来处理对流效应引起的数值振荡。数值计算结果与已有试验数据进行了对比,两者吻合良好,证明了网格移动算法与计算格式的可行性与准确性。
Three dimensional large-amplitude liquid sloshing in the spherical containers is numerically simulated using arbitrary Lagrangian Eulerian （ALE） finite element method. A novel mesh moving algorithm is proposed to update the mesh. The mesh nodes on the free surface and contact line are restricted to move along the prescribed orbits, the nodes on the wet wall are moved by an algebraic mesh moving algorithm, and the interior nodal velocities are determined by solving the Laplace equation. Meanwhile the characteristic based split （ CBS ） scheme is adopted to deal with the numerical oscillations arising from the convection term. The numerical results agree well with the published experimental data, which shows that the proposed algorithm is feasible and effective.
作者
岳宝增
唐勇
YUE Bao-zeng TANG Yong(School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China)
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2016年第12期1405-1410,共6页
Journal of Astronautics
基金
国家自然科学基金(11472041
11532002)
