Title :
Rayleigh imaging and flow tagging in ground test facilities
Author :
Miles, R. ; Lempert, W.R. ; Zhang, B. ; Forkey, J. ; Glesk, I.
Author_Institution :
Dept. of Mech. & Aerosp. Eng., Princeton Univ., NY, USA
Abstract :
The authors present preliminary results on the application of ultraviolet Rayleigh imaging and RELIEF flow tagging to a high Reynolds number, Mach 3 blow-down air facility at Princeton University´s Gas Dynamics Laboratory. RELIEF tagging was accomplished using stimulated Raman scattering to vibrationally excited oxygen molecules. Examples include instantaneous images of boundary-layer structure and shock-wave/boundary-layer interactions, as well as results of flow tagging velocity measurements in the free-stream and boundary-layer regions of this facility. The future implementation of filtered Rayleigh scattering is also discussed
Keywords :
Rayleigh scattering; aerospace test facilities; boundary layer turbulence; flow visualisation; oxygen; shock waves; stimulated Raman scattering; velocity measurement; Mach 3 blow-down air facility; O2 molecules; RELIEF flow tagging; UV; boundary-layer structure; filtered Rayleigh scattering; flow tagging; free-stream; ground test facilities; instantaneous images; laser applications; nonintrusive diagnostics; shock-wave/boundary-layer interactions; stimulated Raman scattering; ultraviolet Rayleigh imaging; velocity measurements; vibrationally excited molecules; Electric shock; Frequency; Laboratories; Large-scale systems; Laser noise; Laser theory; Rayleigh scattering; Tagging; Test facilities; Velocity measurement;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1991. ICIASF '91 Record., International Congress on
Conference_Location :
Rockville, MD
DOI :
10.1109/ICIASF.1991.186247
