An Extended Discontinuous Galerkin Framework for Multiphase Flows

An Extended Discontinuous Galerkin Framework for Multiphase Flows
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DOI:
10.1007/978-3-319-56602-3_3
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发表时间:
2017
期刊:
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影响因子:
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通讯作者:
T. Utz;Christina Kallendorf;F. Kummer;B. Müller;M. Oberlack
T. Utz;Christina Kallendorf;F. Kummer;B. Müller;M. Oberlack
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其他
文献类型:
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作者:
T. Utz;Christina Kallendorf;F. Kummer;B. Müller;M. Oberlack

文献摘要

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我们提出了一个处理高阶不连续伽辽金(DG)环境下切割细胞的框架。为了描述流体相之间的边界,我们使用水平集公式。当界面切割计算单元时,我们使用与标准单元相同的DG方法离散得到的子单元。这需要一个合适的正交程序。在此框架内,我们给出了两相Navier-Stokes方程的求解器、水平集的重新初始化过程和曲面上输运过程的求解器。
We present a framework for handling cut cells in a high order discontinuous Galerkin (DG) context. To describe the boundary between fluid phases, we use a level-set formulation. When the interface cuts a computational cell, we discretize the resulting sub-cells with the same DG method as used on standard cells. This requires a suitable quadrature procedure. Within this framework, we present a solver for the two-phase Navier-Stokes equation, a reinitialization procedure for the level-set and a solver for transport-processes on the surface.