Filtered Rayleigh Scattering for Instantaneous Measurements of Pressure and Temperature in Gaseous Flows Conference Paper uri icon

abstract

  • © 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved. A method is presented for measuring pressure and temperature in gaseous flows using Rayleigh scattered light originating from a narrowband 532-nm laser and detected through two iodine cell filters of different vapor pressures. A pair of filtered Rayleigh scattering (FRS) signals from the two cells measured simultaneously uniquely defines the desired parameters at an instant in time. A strategy is given for ensuring that the effect of velocity on the FRS signal is small and can be neglected. Predicted FRS signals are presented for a turbulent flow experiment that may be used for demonstrating the technique.

author list (cited authors)

  • Jenkins, T. P., George, J., Feng, D., & Miles, R. B.

citation count

  • 0

publication date

  • January 2019