Skip to main content
Log in

Instantaneous profiles and turbulence statistics of supersonic free shear layers by Raman excitation plus laser-induced electronic fluorescence (Relief) velocity tagging of oxygen

  • Originals
  • Published:
Experiments in Fluids Aims and scope Submit manuscript

Abstract

A new method of flow tagging based on the vibrational excitation of oxygen is applied to both supersonic and high-speed subsonic air flows to generate instantaneous velocity profiles and turbulence statistics across the free shear layer. By simultaneously tagging two lines, both transverse and streamwise velocity correlations are found. Rayleigh scattering can also be imaged, so this flow diagnostic technique has the capability of instantaneously recording density cross sections and velocity profiles.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Frey, R.; Lukasik, J.; Ducuing, J. 1972: Tunable Raman excitation and vibrational relaxation in diatomic molecules. Chem. Phys. Lett. 14, 514–517

    Article  Google Scholar 

  • Hinze, J. O. 1975: Turbulence. 2nd edn. p. 39. New York: McGraw-Hill

    Google Scholar 

  • Kychakoff, G.; Howe, R. D.; Hanson, R. K. 1984: Quantitative flow visualization technique for measurements in combustion gases. Appl. Opt. 23, 704–712

    Google Scholar 

  • Lu, L.; Smith, C. 1985: Image processing of hydrogen bubble flow visualization for determination of turbulence statistics and bursting characteristics. Exp. Fluids 3, 349–356

    Article  Google Scholar 

  • Miles, R.; Cohen, C.; Connors, J.; Howard, P.; Huang, S.; Markovitz, E.; Russell, G. 1987: Velocity measurements by vibrational tagging and fluorescent probing of oxygen. Opt. Lett. 12, 861–863

    Google Scholar 

  • Miles, R.; Connors, J.; Markovitz, E.; Roth, G. 1988: Coherent anti-Stokes Raman scattering (CARS) and Raman pumping lineshapes in high fields. In: Pulsed single-frequency lasers: technology and applications (eds. Rahn, L.; Bischel, W.) SPIE Vol. 912. Paper #912-26, 184

  • Zimmermann, M.; Miles, R. B. 1980: Hypersonic-helium-flow-field measurements with the resonant Doppler velocimeter. App. Phys. Lett. 37, 885–887

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Miles, R.B., Connors, J.J., Markovitz, E.C. et al. Instantaneous profiles and turbulence statistics of supersonic free shear layers by Raman excitation plus laser-induced electronic fluorescence (Relief) velocity tagging of oxygen. Experiments in Fluids 8, 17–24 (1989). https://doi.org/10.1007/BF00203060

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00203060

Keywords

Navigation