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

Abstract

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

CLC Number:

V211.3

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

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