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Journal of Projectiles, Rockets, Missiles and Guidance >

2016 , Vol. 36 >Issue 3: 65 - 68

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2016.03.018

ROCKETS TECHNOLOGY

Experimental Investigation on Shock Waves and Flow Structures in Pressure Unmatched Mixing Layer

  • ZHANG Dongdong ,
  • TAN Jianguo ,
  • LYU Liang
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  • Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China

Received date: 2015-05-10

  Online published: 2025-05-30

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Abstract

Nanoparticle-based planar laser scattering (NPLS)technique and pseudo-color processing technology were employed to investigate flow structures and interaction of shock waves and turbulent boundary layer.The images clearly displayed fine flow structures such as Kelvin-Helmholtz vortices, shock waves, turbulent boundary layer and separation bubble.The results show that the transition position of mixing layer advances and large scale structures become crushed due to the unmatched pressure.Meanwhile, the development direction is downside, which has lower pressure.Because of the interaction of shock waves and turbulent boundary layer, the boundary layer becomes thicker behind incidence point.Besides, the intensification of turbulence fluctuations is responsible for movement of incidence point.

Key words： supersonic flow; mixing layer; pressure unmatched; shock waves; vortical structures; turbulent boundary layer

Cite this article

ZHANG Dongdong , TAN Jianguo , LYU Liang . Experimental Investigation on Shock Waves and Flow Structures in Pressure Unmatched Mixing Layer[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2016 , 36(3) : 65 -68 . DOI: 10.15892/j.cnki.djzdxb.2016.03.018

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