Turbulence measurements using FARRS in a supersonic axisymmetric jet

Richard E. Huffman, Gregory S. Elliott, Martin Boguszko

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This article details the simultaneous measurement density, pressure, temperature and the streamwise component of velocity in a supersonic free jet. The free jet is a Mach 1.2, pressure matched jet exhausted into atmospheric air. The non-intrusive measurement technique captures Rayleigh scattering from molecules created by a pulsed, frequency doubled Nd:YAG laser across a range of angles in the plane of the jet exhaust. The laser is frequency agile and is tuned to transmit on a sloping absorption region of molecular iodine. The arc of the scattered light is focused through anamorphic optics, split into two beams and captured on a single intensified CCD camera. One of the beams passes through a molecular iodine filter, while the other beam remains unaltered. The Doppler shift, as well as broadening characteristics of Rayleigh scattering, are exploited to determine flow properties and a single component of velocity from a single laser pulse. Information from multiple pulses are combined to determine mean as well as fluctuating turbulent quantities.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
Number of pages15
StatePublished - 2007
Event45th AIAA Aerospace Sciences Meeting 2007 - Reno, NV, United States
Duration: Jan 8 2007Jan 11 2007

Publication series

NameCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting


Other45th AIAA Aerospace Sciences Meeting 2007
Country/TerritoryUnited States
CityReno, NV

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering


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