Quantitative visualization of velocity and density fields in unseeded air flows Academic Article uri icon

abstract

  • New techniques which are capable of imaging instantaneous velocity and density fields in unseeded air flows are now becoming available. The images give an immediate, qualitative sense of flow properties such as shock wave location, boundary layer structure, turbulence intensity, velocity profiles, and vorticity. By digitizing the images and using various data reduction techniques, quantitative measures of flow properties can be extracted. In this paper two techniques are discussed: Flow tagging of air using the RELIEF method and density and velocity imaging by Filtered Rayleigh Scattering. With projected laser source development, these approaches can be extended to the measurement of instantaneous volumetric data in high-speed, unsteady flow fields. (A)

author list (cited authors)

  • Miles, R. B.

complete list of authors

  • Miles, RB

publication date

  • January 1991