Inflow/outflow pressure boundary conditions for smoothed particle hydrodynamics simulations of incompressible flows
Inflow/outflow pressure boundary conditions for smoothed particle hydrodynamics simulations of incompressible flows
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DOI：
10.1016/j.compfluid.2017.09.011
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发表时间：
2017-12
影响因子：
2.8
通讯作者：
Alessandra Monteleone;Massimiliano Monteforte;E. Napoli
中科院分区：
文献类型：
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作者：
Alessandra Monteleone;Massimiliano Monteforte;E. Napoli
开边界处理是光滑粒子流体动力学（SPH）方法中的一个重要问题，主要是在采用真实不可压缩（ISPH）方法时，本文提出了一种在计算域中设置压力边界条件的新方法。新技术允许以相同的方式处理流入和流出截面，有效地处理在入口处释放的新粒子和通过outlets.Several的3D数值试验，无论是在层流和湍流制度，离开域的失活的处理，进行了验证所提出的数值方案考虑稳定和振荡的压力边界条件。
Open Boundary treatment is a well-known issue in the Smoothed Particle Hydrodynamics (SPH) method, mainly when the truly Incompressible (ISPH) approach is employed.In the paper a novel method is proposed to set pressure boundary conditions in the computational domain inlets and outlets, without requiring the velocity profile assignment. The new technique allows to treat in the same way inflow and outflow sections, effectively dealing with the release of new particles at inlets and the deactivation of the ones leaving the domain through the outlets.Several 3D numerical tests, both in the laminar and turbulent regimes, are carried out to validate the proposed numerical scheme considering steady and oscillating pressure boundary conditions.