A multi-region coupling scheme for compressible and incompressible flow solvers for two-phase flow in a numerical wave tank
A multi-region coupling scheme for compressible and incompressible flow solvers for two-phase flow in a numerical wave tank
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DOI：
10.1016/j.compfluid.2015.11.005
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发表时间：
2016-02
影响因子：
2.8
通讯作者：
P. M. Ferrer;D. Causon;L. Qian;C. Mingham;Zhihua Ma
中科院分区：
文献类型：
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作者：
P. M. Ferrer;D. Causon;L. Qian;C. Mingham;Zhihua Ma
提出了一种基于有限体积法的多区域耦合方法，并将其应用于两相流体动力自由表面流动问题。该方法结合了一个不可压缩和一个可压缩两相流求解器的特点，以获得一个耦合系统，这通常是上级单独求解。耦合策略是基于分区的方法，其中不同的求解器，预定义的计算域的不同区域，通过接口，即分离这些区域的区域交换信息。界面作为边界条件，将信息从一个区域传递到另一个区域，模仿有限体积单元到面插值过程。这导致高性能的计算耦合模拟，其功能可以进一步扩展，以建立一个通用的数值波浪池占不可压缩的流动区域以及压缩性和曝气效果。我们选择了一系列的初步基准来验证这个耦合过程，其中包括模拟的水力溃坝，规则波的传播和反射，对流的无粘涡，伪空化，水柱自由下降在一个封闭的坦克和一个垂直的墙壁上的冲击波。所得结果与精确解、实验及其它数值结果吻合较好。
We present a multi-region coupling procedure based on the finite-volume method and apply it to two-phase hydrodynamic free surface flow problems. The method combines the features of one incompressible and one compressible two-phase flow solvers to obtain a coupled system which is generally superior to either solver alone. The coupling strategy is based on a partitioned approach in which different solvers, pre-defined in different regions of the computational domain, exchange information through interfaces, i.e. areas separating these regions. The interfaces act as boundary conditions passing the information from one region to the other mimicking the finite-volume cell-to-face interpolation procedures. This results in high performance computing coupled simulations whose functionality can be further extended in order to build a generic numerical wave tank accounting for incompressible flow regions as well as compressibility and aeration effects. We select a series of preliminary benchmarks to verify this coupling procedure which includes the simulation of a hydrodynamic dam break, the propagation and reflection of regular waves, the convection of an inviscid vortex, pseudocavitation, a water column free drop in a closed tank and a plunging wave impact at a vertical wall. The obtained results agree well with exact solutions, laboratory experiments and other numerical data.