Analysis of the wall heat flux of the hypersonic shock wave/boundary layer interaction using a novel decomposition formula

IF 2.2 3区工程技术 Q2 MECHANICS

Theoretical and Computational Fluid Dynamics Pub Date : 2024-07-16 DOI:10.1007/s00162-024-00711-3

Dong Sun, Xiaodong Liu, Chen Li, Qilong Guo, Xianxu Yuan, Pengxin Liu

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Abstract

The generation mechanism of wall heat flux is one of the fundamental problems in supersonic/hypersonic turbulent boundary layers. A novel heat decomposition formula under the curvilinear coordinate was proposed in this paper. The new formula has wider application scope and can be applied in the configurations with grid deformed. The new formula analyzes the wall heat flux of an interaction between a shock wave and a turbulent boundary layer over a compression corner. The results indicated good performance of the formula in the complex interaction region. The contributions of different energy transport processes were obtained. While the processes by the mean profiles such as molecular stresses and heat conduction, can be ignored, the contributions by the turbulent fluctuations, such as Reynolds stresses and turbulent transfer of heat flux, were greatly increased. Additionally, the pressure work is another factor that affects the wall heat flux. The pressure work in the wall-normal direction is concentrated close to the reattachment point, while the pressure work in the streamwise direction acts primarily in the shear layer and the reattachment point.

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利用新型分解公式分析高超音速冲击波/边界层相互作用的壁面热通量

壁面热通量的产生机理是超音速/超音速湍流边界层的基本问题之一。本文提出了一种新的曲线坐标下的热分解公式。新公式的应用范围更广，可应用于网格变形的构型。新公式分析了压缩角上冲击波与湍流边界层相互作用的壁面热通量。结果表明，该公式在复杂的相互作用区域具有良好的性能。计算得到了不同能量传输过程的贡献。虽然分子应力和热传导等平均剖面过程可以忽略，但雷诺应力和热通量的湍流传递等湍流波动过程的贡献却大大增加。此外，压力功也是影响壁面热通量的另一个因素。壁面法线方向的压力功集中在重新附着点附近，而流线方向的压力功主要作用于剪切层和重新附着点。

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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来源期刊

Theoretical and Computational Fluid Dynamics 物理-力学

CiteScore

5.80

自引率

2.90%

发文量

审稿时长

>12 weeks

期刊介绍： Theoretical and Computational Fluid Dynamics provides a forum for the cross fertilization of ideas, tools and techniques across all disciplines in which fluid flow plays a role. The focus is on aspects of fluid dynamics where theory and computation are used to provide insights and data upon which solid physical understanding is revealed. We seek research papers, invited review articles, brief communications, letters and comments addressing flow phenomena of relevance to aeronautical, geophysical, environmental, material, mechanical and life sciences. Papers of a purely algorithmic, experimental or engineering application nature, and papers without significant new physical insights, are outside the scope of this journal. For computational work, authors are responsible for ensuring that any artifacts of discretization and/or implementation are sufficiently controlled such that the numerical results unambiguously support the conclusions drawn. Where appropriate, and to the extent possible, such papers should either include or reference supporting documentation in the form of verification and validation studies.