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CARS Temperature Measurements in Turbulent and Supersonic FacilitiesThis paper documents the development of the National Aeronautics and Space Administration s (NASA) Langley Research Center ( LaRC) Coherent Antistokes Raman Spectroscopy (CARS) systems for measurements of temperature in a turbulent subsonic or supersonic reacting hydrogen-air environment. Spectra data provides temperature data when compared to a precalculated library of nitrogen CARS spectra. Library validity was confirmed by comparing CARS temperatures derived through the library with three different techniques for determination of the temperature in hydrogen-air combustion and an electrically heated furnace. The CARS system has been used to survey temperature profiles in the simulated flow of a supersonic combustion ramjet (scramjet) model. Measurement results will be discussed.
Document ID
20040121149
Acquisition Source
Langley Research Center
Document Type
Other
Authors
Jarrett, O., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Antcliff, R. R.
(NASA Langley Research Center Hampton, VA, United States)
Smith, M. W.
(NASA Langley Research Center Hampton, VA, United States)
Cutler, A. D.
(NASA Langley Research Center Hampton, VA, United States)
Diskin, G. S.
(NASA Langley Research Center Hampton, VA, United States)
Northam, G. B.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 1991
Subject Category
Fluid Mechanics And Thermodynamics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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