Numerical Simulation of Hypersonic Flow over a Blunt Wedge in Response to Impulse Wave

DOI

10.2991/ammee-17.2017.44How to use a DOI?

Keywords

Direct Numerical Simulation; impulse wave; hypersonic flow; boundary layer.

Abstract

The hypersonic flow over a blunt wedge under freestream impulse wave is analyzed by direct numerical simulation and the nonlinear evolution of disturbance wave modes in the boundary layers is discussed. Results show that, under impulse wave, the thermodynamic mechanism and shear flow structure in the boundary layer is sharply changed, and the effect of the reflection wave between bow shock and wall on shear flow structure is larger than that of freestream impulse wave. Both the disturbance waves with frequency less than fundamental mode and the harmonic modes in hypersonic boundary layer are induced under impulse wave. Flow recompression plays a significant role in the evolution of disturbance waves in the boundary layer. Low frequency disturbances are the dominant mode in the nose boundary layer. With the evolution of disturbance waves along streamwise, the boundary layer will be dominated by the second harmonic mode (x>2.3), and all disturbance modes decrease along streamwise except the second order harmonic mode (x>4.5).

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiaojun Tang
AU  - Fenglong Yang
AU  - Tianli Hui
AU  - Wentao Yu
AU  - Pengbo Yin
PY  - 2017/06
DA  - 2017/06
TI  - Numerical Simulation of Hypersonic Flow over a Blunt Wedge in Response to Impulse Wave
BT  - Proceedings of the Advances in Materials, Machinery, Electrical Engineering (AMMEE 2017)
PB  - Atlantis Press
SP  - 212
EP  - 219
SN  - 2352-5401
UR  - https://doi.org/10.2991/ammee-17.2017.44
DO  - 10.2991/ammee-17.2017.44
ID  - Tang2017/06
ER  -