Title :
Surface temperature mapping using liquid crystals applied to identifying the laminar-turbulent transition
Author :
Bize, D. ; Lempereur, Ch ; Mathe, J.M. ; Mignosi, A. ; Séraudie, A. ; Serrot, G.
Author_Institution :
ONERA-CERT, Toulouse, France
fDate :
29 Sep-2 Oct 1997
Abstract :
The determination of the transonic position on a two dimensional model is an important subject of studies in the ONERA-CERT T2 cryogenic wind tunnel. The use of liquid crystals with a specific methodology of calibration, acquisition and image processing allowed one to go beyond the usual stage of qualitative imaging and to determine the temperature map on the surface of the model, the variation in time of this temperature and to know the precise location of the laminar/turbulent transition
Keywords :
calibration; cholesteric liquid crystals; cryogenics; laminar flow; laminar to turbulent transitions; transonic flow; wind tunnels; ONERA-CERT T2 cryogenic wind tunnel; acquisition; calibration; cholesteric liquid crystals; image processing; laminar-turbulent transition; surface temperature mapping; transonic position; two dimensional model; Calibration; Coatings; Cryogenics; Liquid crystal displays; Liquid crystals; Temperature distribution; Temperature measurement; Temperature sensors; Testing; Time measurement;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1997. ICIASF '97 Record., International Congress on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-7803-4167-8
DOI :
10.1109/ICIASF.1997.644665
