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

fYear

1997

fDate

29 Sep-2 Oct 1997

Firstpage

66

Lastpage

76

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICIASF.1997.644665

Filename

644665