A three-dimensional Cartesian cut-cell/volume-of-fluid method for two-phase flows with moving bodies
A three-dimensional Cartesian cut-cell/volume-of-fluid method for two-phase flows with moving bodies
复制标题
用于移动体两相流的三维笛卡尔切割单元/流体体积方法
DOI：
10.1016/j.jcp.2020.109536
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发表时间：
2020
影响因子：
4.1
通讯作者：
Xie Z
中科院分区：
文献类型：
--
作者：
Xie Z
本文提出了一种三维笛卡尔切割单元法，用于含运动物体的两相流的大涡模拟。该方法在固定的、非均匀的、交错的笛卡尔网格上，将流体体积法和运动物体算法相结合来捕捉空气-水界面。过滤的Navier-Stokes方程离散使用有限体积法与PISO算法的速度-压力耦合和动态Smagorinsky亚网格尺度模型来计算未解决的（亚网格）尺度的湍流大尺度上的效果。在本研究中，小切割细胞是未经修改的，由于使用隐式时间积分没有不稳定性发生在计算过程中。本两相流模型的多功能性和鲁棒性说明通过各种二维和三维流动问题与固定/移动的机构，如溃坝流与和没有一个正方形的圆柱体，一个移动的圆柱体在静止的流体，溃坝流的湿床与移动门，水的入口和存在的圆柱体，和陆侧产生的波。数值计算结果与相应的实验测量结果吻合较好。
A three-dimensional Cartesian cut-cell method for the large-eddy simulation of two-phase flows with moving bodies is presented in this study, which combines a volume-of-fluid method to capture the air-water interface and a moving body algorithm on a stationary, non-uniform, staggered, Cartesian grid. The filtered Navier–Stokes equations are discretised using the finite volume method with the PISO algorithm for velocity-pressure coupling and the dynamic Smagorinsky subgrid-scale model is employed to compute the effect of the unresolved (subgrid) scales of turbulence on the large scales. In the present study, the small cut-cells are unmodified and due to the use of an implicit time integration no instabilities occur during the computations. The versatility and robustness of the present two-phase flow model is illustrated via various two- and three-dimensional flow problems with fixed/moving bodies, such as dambreak flows with and without a square cylinder, a moving cylinder in a quiescent fluid, dambreak flow over a wet bed with a moving gate, water entry and exist of a circular cylinder, and landside-generated waves. Good agreement is obtained between the numerical results and the corresponding experimental measurements.
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DOI：
10.1137/0913035
发表时间：
1992-03-01
期刊：
SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING
影响因子：
--
作者：
VANDERVORST, HA
通讯作者：
VANDERVORST, HA
影响因子：
1.8
作者：
Pavlidis, Dimitrios;Gomes, Jefferson L. M. A.;Matar, Omar K.
通讯作者：
Matar, Omar K.
影响因子：
3.7
作者：
Liu, PLF;Wu, TR;Borrero, JC
通讯作者：
Borrero, JC
影响因子：
2.5
作者：
R. McSherry;K. Chua;T. Stoesser
通讯作者：
R. McSherry;K. Chua;T. Stoesser
计算气动声学的基于有限体积的高阶笛卡尔切割单元方法
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
M. Popescu;C. Tai;W. Shyy
通讯作者：
W. Shyy