高超声速飞行器表面横缝旋涡结构及气动热环境数值模拟

doi:10.7527/S1000-6893.2015.0090

流体力学与飞行力学

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高超声速飞行器表面横缝旋涡结构及气动热环境数值模拟

邱波^1,2, 张昊元², 国义军², 曾磊², 石友安², 桂业伟^1,2

1. 中国空气动力研究与发展中心空气动力学国家重点实验室, 绵阳 621000;
2. 中国空气动力研究与发展中心计算空气动力研究所, 绵阳 621000

收稿日期:2014-12-15 修回日期:2015-03-30 出版日期:2015-11-15 发布日期:2015-04-07
通讯作者: 国义军,Tel.:0816-2463316,E-mail:GYJ2236985@sina.com E-mail:GYJ2236985@sina.com
作者简介:邱波,男,硕士研究生。主要研究方向:高超声速飞行器气动热与热防护。Tel:0816-2463319,E-mail:qbuptoyou@126.com;国义军,男,研究员。主要研究方向:高超声速飞行器气动热与热防护。Tel:0816-2463316,E-mail:GYJ2236985@sina.com
基金资助:
国家自然科学基金(91216204);国家重点基础研究发展计划(2014CB744100)

Numerical investigation for vortexes and aerodynamic heating environment on transverse gap on hypersonic vehicle surface

QIU Bo^1,2, ZHANG Haoyuan², GUO Yijun², ZENG Lei², SHI Youan², GUI Yewei^1,2

1. State Key Laboratory of Aerodynamics, China Aerodynamic Research and Development Center, Mianyang 621000, China;
2. Computational Aerodynamics Institute, China Aerodynamic Research and Development Center, Mianyang 621000, China

Received:2014-12-15 Revised:2015-03-30 Online:2015-11-15 Published:2015-04-07
Supported by:
National Natural Science Foundation of China (91216204);National Key Basic Research and Development Program (2014CB744100)

摘要/Abstract

摘要：

针对高超声速飞行器表面横缝内部流动,通过求解可压缩Navier-Stokes方程,自主研发了一套能够较好模拟缝隙流动特性的CFD软件,利用该软件对横缝进行了数值模拟。研究表明,对于缝隙内黏性起主导作用的低速流动,通常需要密度足够充分的网格才能获得较好的计算结果。收敛后的壁面热流与文献实验热流吻合较好;缝隙内部旋涡个数近似与缝隙深宽比成比例,与文献中的有关结论完全一致。缝隙壁面热流分布受旋涡结构影响,会出现波浪式变化。因此,合理捕捉旋涡结构对于缝隙壁面热流的数值模拟有着重要意义,本文CFD软件对高超声速飞行器表面横缝的计算结果具有较高可信度。

关键词: 高超声速, 缝隙, 数值模拟, 旋涡, 热流分布

Abstract:

By solving the compressible Navier-Stokes equations, a CFD software is developed independently, which can well simulate the flow in the gap on the hypersonic vehicle surface. A numerical simulation research of transverse gap has been conducted with this software. The research shows that a preferable result comes from constructing grid with enough density to simulate the low-speed flow in the transverse gap. The convergent heat flux distribution is consistent with the experimental results in the previous literature; approximately, the number of the main vortexes in the gap is proportional to the depth-to-width ratio, which reaches agreement with findings in the literature as well. Affected by the vortexes, the heat flux distribution varies undulatingly. Therefore, capturing the vortexes reasonably has an important significance to the simulation of the heat flux and the results obtained from the CFD software are credible.

Key words: hypersonic, gap, numerical simulation, vortex, heat flux distribution

中图分类号:

V211.3

邱波, 张昊元, 国义军, 曾磊, 石友安, 桂业伟. 高超声速飞行器表面横缝旋涡结构及气动热环境数值模拟[J]. 航空学报, 2015, 36(11): 3515-3521.

QIU Bo, ZHANG Haoyuan, GUO Yijun, ZENG Lei, SHI Youan, GUI Yewei. Numerical investigation for vortexes and aerodynamic heating environment on transverse gap on hypersonic vehicle surface[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(11): 3515-3521.

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E-mail：hkxb@buaa.edu.cn

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高超声速飞行器表面横缝旋涡结构及气动热环境数值模拟

Numerical investigation for vortexes and aerodynamic heating environment on transverse gap on hypersonic vehicle surface

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