Numerical Simulation of Free Surface Fluid Flows Through Porous Media by Using the Explicit MPS Method
Numerical Simulation of Free Surface Fluid Flows Through Porous Media by Using the Explicit MPS Method
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DOI：
10.1007/s11242-018-1178-z
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发表时间：
2018-11
影响因子：
2.7
通讯作者：
Xiaosong Sun;M. Sun;K. Takabatake;C. Pain;M. Sakai
中科院分区：
文献类型：
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作者：
Xiaosong Sun;M. Sun;K. Takabatake;C. Pain;M. Sakai
提出了一种扩展的显式移动粒子半隐式（MPS）方法，用于模拟多孔结构物体的自由表面流动。该模型是基于局部体积平均方程，多孔阻力给出了一个通用的封闭函数。它可以计算多孔介质中不可压缩流动的宏观行为。具体而言，本研究解决现有MPS模型在两个方面的数值困难，即宏观流体体积守恒和流体和多孔介质相互渗透的流体静力平衡。通过数值试验验证了模型的有效性和准确性，仿真结果与验证数据吻合较好。与现有的模型相比，它也表明，在这项研究中开发的数值技术是重要的，以获得一致的预测的流动行为。因此，本MPS方法被证明是适合于模拟与多孔结构相互作用的自由表面流。
An extension of the explicit moving particle semi-implicit (MPS) method is proposed for simulating free surface flow through a porous structure object. The model formulation is based on the local volume averaging equations, and the porous drag is given by a general closure function. It can compute the macroscopic behaviors of incompressible flows in porous media. Specifically, the present study addresses numerical difficulties of existing MPS models in two respects, namely the conservation of macroscopic fluid volume and the well-balanced hydrostatic equilibrium where the fluid and porous media interpenetrate. Numerical tests are performed to examine the validity and accuracy of the proposed model, from which good agreements are found between the simulation results and validation data. In comparison with existing models, it is also demonstrated that the numerical techniques developed in this study are important to obtain consistent predictions of flow behaviors. Therefore, the present MPS method is shown to be suitable for modeling free surface flows interacting with porous structures.