Numerical solution of Navier-Stokes-Korteweg systems by Local Discontinuous Galerkin methods in multiple space dimensions

Numerical solution of Navier-Stokes-Korteweg systems by Local Discontinuous Galerkin methods in multiple space dimensions
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多维空间局部间断伽辽金法对 Navier-Stokes-Korteweg 系统的数值求解

DOI:
10.1016/j.amc.2015.09.080
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发表时间:
2016
期刊:
Appl. Math. Comput.
影响因子:
--
通讯作者:
Kroner
Kroner
中科院分区:
--
文献类型:
--
作者:
Kremser;Kroner

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具有相变的可压缩液-气流动可以用Navier-Stokes-Korteweg型体系来描述。他们通过采用微分或非局部积分算子形式的非线性高级项扩展了Navier-Stokes方程。基于局部不连续伽辽金方法,提出了等温流动在多空间维度上的数值逼近方法。它依赖于非保守公式的特定离散化。为了提高整体方案的性能,采用了两种技术:(i)基于密度梯度指标的局部空间自适应性和(ii)基于域分解的并行性。最后进行了二维和三维的数值实验。它们表明了所提出方法的可靠性和有效性,并证明了模型对几种重要相变现象的适用性。
Compressible liquid–vapor flow with phase transitions can be described by systems of Navier–Stokes–Korteweg type. They extend the Navier–Stokes equations by nonlinear higher-grade terms which take the form of either differential or nonlocal integral operators. A numerical approximation method on the basis of the Local Discontinuous Galerkin method in multiple space dimensions is suggested for isothermal flows. It relies on a specific discretization of a non-conservative formulation. To enhance the performance of the overall scheme two techniques are used: (i) local spatial adaptivity based on gradient indicators for the density and (ii) parallelism based on domain decomposition.The paper concludes with numerical experiments in two and three space dimensions. They show the reliability and efficiency of the proposed approach as well as they demonstrate the applicability of the models for several important phase transition phenomena.
DOI: 10.1002/zamm.200410211
发表时间: 2005-12
期刊: ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik
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