Analysis of high speed non-equilibrium chemically reacting gas flows. Part II. A finite volume/finite element model and numerical studies

Christophe Harle; Graham F. Carey; Philip L. Varghese

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Analysis of high speed non-equilibrium chemically reacting gas flows. Part II. A finite volume/finite element model and numerical studies

机译：高速非平衡化学反应气流的分析。第二部分有限体积/有限元模型和数值研究

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In this part, a new hybrid numerical model for solving the two-dimensional axisymmetric Navier-Stokes equations for a multi-species reacting gas out of thermal and chemical equilibrium is constructed. The formulation is based on a mixed finite volume/finite element formulation for unstructured meshes. The convective flux is treated with an approximate Osher-Riemann solver, and the other fluxes are treated using P1 finite elements. New aspects of the extension of the Osher-Riemann solver are presented here. This scheme was used for the benchmark model comparison in Part I, and is applied here to hypersonic (Mach 25) flow past a two-dimensional ellipse and a hemispherically blunted body at sea level.

机译：在这一部分中，建立了一个新的混合数值模型，用于求解二维多轴反应热和化学平衡气体之外的轴对称Navier-Stokes方程。该公式基于非结构网格的有限体积/有限元混合公式。对流通量使用近似Osher-Riemann求解器进行处理，而其他通量则使用P1有限元进行处理。此处介绍了Osher-Riemann求解器扩展的新方面。该方案在第一部分中用于基准模型比较，并在此处应用于流过二维椭圆形和海平面半球形钝体的高超音速（25马赫）流。

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来源
《International Journal for Numerical Methods in Fluids》 |2000年第6期|共19页
作者
Christophe Harle; Graham F. Carey; Philip L. Varghese;
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正文语种 eng
中图分类流体力学;
关键词
gas flow; flux; hybrid numerical model; non-equilibrium;

机译：气流磁通混合数值模型非平衡;

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机译：高速非平衡化学反应气流的分析。第二部分有限体积/有限元模型和数值研究
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Analysis of high speed non-equilibrium chemically reacting gas flows. Part II. A finite volume/finite element model and numerical studies

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