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arXiv 2307.04580math.NAcs.NAphysics.flu-dyn
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基于人工可压缩性公式的不可压缩两相流隐式间断伽辽金(DG)求解器

An implicit DG solver for incompressible two-phase flows with an artificial compressibility formulation

Giuseppe Orlando

AI总结:

针对不可压缩两相流,提出基于人工可压缩性公式的隐式DG离散方法,结合CLS界面捕捉、TR-BDF2时间离散与AMR,经经典基准验证有效并分析了混合粘度的影响。

摘要:

我们提出一种基于人工可压缩性公式的不可压缩两相流隐式间断伽辽金(DG)离散方法。采用保守水平集(CLS)方法结合重新初始化程序捕捉移动界面;对Navier-Stokes方程和水平集方法的时间离散采用基于L稳定TR-BDF2方法的投影法;为提高两流体界面处的分辨率,使用自适应网格细化(AMR)。通过多个经典基准验证了所提方法的有效性,并对混合粘度不同选择的影响进行了具体分析。

英文摘要:

We propose an implicit Discontinuous Galerkin (DG) discretization for incompressible two-phase flows using an artificial compressibility formulation. The conservative level set (CLS) method is employed in combination with a reinitialization procedure to capture the moving interface. A projection method based on the L-stable TR-BDF2 method is adopted for the time discretization of the Navier-Stokes equations and of the level set method. Adaptive Mesh Refinement (AMR) is employed to enhance the resolution in correspondence of the interface between the two fluids. The effectiveness of the proposed approach is shown in a number of classical benchmarks. A specific analysis on the influence of different choices of the mixture viscosity is also carried out.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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