Numerical Simulation and Impact Studies of Hypersonic Unsteady Flow Under the Action of Pulse Disturbance Wave

MENG Xiang-nan; WANG Zhen-qing; TANG Xiao-jun; Lü Hong-qing

doi:10.3879/j.issn.1000-0887.2013.02.003

Volume 34 Issue 2

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MENG Xiang-nan, WANG Zhen-qing, TANG Xiao-jun, Lü Hong-qing. Numerical Simulation and Impact Studies of Hypersonic Unsteady Flow Under the Action of Pulse Disturbance Wave[J]. Applied Mathematics and Mechanics, 2013, 34(2): 127-138. doi: 10.3879/j.issn.1000-0887.2013.02.003

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Numerical Simulation and Impact Studies of Hypersonic Unsteady Flow Under the Action of Pulse Disturbance Wave

doi: 10.3879/j.issn.1000-0887.2013.02.003

College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, P.R.China

Received Date: 2012-12-31
Rev Recd Date: 2013-01-07
Publish Date: 2013-02-15

Abstract

Abstract

Direct numerical simulation of pulse disturbance in hypersonic flow over a blunt cone by using high-order accuracy finite difference method was performed. The interaction between fast acoustic wave and hypersonic flow field was studied; the evolution and development process of disturbance wave in the boundary layer was analyzed by Fourier frequency spectral analysis (FFSA). Results show that the disturbance into the flow field interacted with the shock wave and boundary layer, which makes bow shock bent obviously and disturbance enlarged, with obvious demarcations between the disturbance near the wall and in the outer boundary layer. The perturbation amplitudes on the nose are much larger than on the other locations. At the stage of the development of disturbance in the boundary layer, some perturbation modes continue to grow, some are filtered and seldom grow, even decay, and also some decay firstly and then grow. In general, the low frequency perturbation modes are dominated within a nose radius, with the disturbance development from upstream to downstream, the high frequency components increase quickly and low frequency components almost are restrained to grow.
- hypersonic flow,
- boundary-layer,
- pulse perturbation,
- fast acoustic wave,
- Fourier frequency spectral analysis

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References(20)

References

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