基于正则化气体动力方程系统开发新的均质混合物求解器

IF 1.7 4区工程技术 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

International Journal for Numerical Methods in Fluids Pub Date : 2024-09-06 DOI:10.1002/fld.5333

Andrey Epikhin, Ivan But

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引用次数: 0

摘要

本文介绍了一种基于准气体动力学方程的多组分气体混合物建模改进方法。所提出的数值算法是在开源 OpenFOAM 平台上作为反应 QGDFoam 求解器实现的。在验证过程中考虑了以下问题：黎曼问题、后向阶跃问题、冲击波与重气泡和轻气泡的相互作用、空气中不稳定的未充分膨胀氢气喷射流。确定了所提数值算法的稳定性和收敛参数。模拟结果与分析解和实验数据一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Development of a new solver for homogenous mixture based on regularized gas dynamic equation system

The paper presents an improved approach for modeling multicomponent gas mixtures based on quasi‐gasdynamic equations. The proposed numerical algorithm is implemented as a reactingQGDFoam solver based on the open‐source OpenFOAM platform. The following problems have been considered for validation: the Riemann problems, the backward facing step problem, the interaction of a shock wave with a heavy and a light gas bubble, the unsteady underexpanded hydrogen jet flow in an air. The stability and convergence parameters of the proposed numerical algorithm are determined. The simulation results are found to be in agreement with analytical solutions and experimental data.

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来源期刊

International Journal for Numerical Methods in Fluids 物理-计算机：跨学科应用

CiteScore

3.70

自引率

5.60%

发文量

111

审稿时长

8 months

期刊介绍： The International Journal for Numerical Methods in Fluids publishes refereed papers describing significant developments in computational methods that are applicable to scientific and engineering problems in fluid mechanics, fluid dynamics, micro and bio fluidics, and fluid-structure interaction. Numerical methods for solving ancillary equations, such as transport and advection and diffusion, are also relevant. The Editors encourage contributions in the areas of multi-physics, multi-disciplinary and multi-scale problems involving fluid subsystems, verification and validation, uncertainty quantification, and model reduction. Numerical examples that illustrate the described methods or their accuracy are in general expected. Discussions of papers already in print are also considered. However, papers dealing strictly with applications of existing methods or dealing with areas of research that are not deemed to be cutting edge by the Editors will not be considered for review. The journal publishes full-length papers, which should normally be less than 25 journal pages in length. Two-part papers are discouraged unless considered necessary by the Editors.