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Computer Program for Calculation of a Gas Temperature Profile by Infrared Emission: Absorption SpectroscopyA computer program to calculate the temperature profile of a flame or hot gas was presented in detail. Emphasis was on profiles found in jet engine or rocket engine exhaust streams containing H2O or CO2 radiating gases. The temperature profile was assumed axisymmetric with an assumed functional form controlled by two variable parameters. The parameters were calculated using measurements of gas radiation at two wavelengths in the infrared. The program also gave some information on the pressure profile. A method of selection of wavelengths was given that is likely to lead to an accurate determination of the parameters. The program is written in FORTRAN IV language and runs in less than 60 seconds on a Univac 1100 computer.
Document ID
19780007100
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Buchele, D. R. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
December 1, 1977
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA-TM-73848
E-9436
Accession Number
78N15043
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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