三维VOF方法—PLIC3D算法研究  

A 3-Dimensional Volume of Fluid Method-PLIC3D

作　　者：胡影影[1] 朱克勤[2] 席葆树[2] 

机构地区：[1]同济大学力学系,上海200092 [2]清华大学力学系,北京100084

出　　处：《力学季刊》2003年第2期238-243,共6页Chinese Quarterly of Mechanics

摘　　要：本文研究的目的在于,使用分段线性PLIC(Piecewise Linear Interface Construction)方式构造界面,推导三维空间中的VOF(Volume of Fluid)算法PLIC3D,给出详尽的计算公式和过程。然后,用球形流体匀速运动作为分析PLIC3D算法的数值算例,比较了PLIC3D和分段常数PCIC(Piecewise Constant Interface Construction)构造法中DA3D(Donor-Acceptor in 3-Dimension)在三维空间计算界面的差别。结果显示PLIC3D优于DA3D,它能够更好地保持流体在平移运动中的形状,证实了PLIC方式的空间构造精度高于PCIC的结论。最后,利用PLIC3D计算自由面,模拟容器中流体泄漏问题,得到了其液面形状变化和速度场。With piecewise linear interface construction, PLIC3D (PLIC in 3-Dimension), a VOF (Volume of Fluid) method in 3-dimension, was studied. Its efficiency was proved by a benchmark, spheric ideal fluid moving with a constant speed; compared with the results from DA3D (Donor-Acceptor in 3-Dimension) by piecewise constant interface construction (PCIC), PLIC3D kepts interfaces smoother and more consistent. Higher accuracy of construction from PLIC than from PCIC was proved. A practical sample, tank dripping, whose free surfaces were traced by PLIC3D, was numerically studied, from which the surface profiles and velocity fields were obtained.

关 键 词：PLIC VOF 界面重构 自由面 

分 类 号：O353.4[理学—流体力学]