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Relations for the thermodynamic and transport properties in the testing environment of the Langley hypersonic CF4 tunnelThermodynamic and transport properties of gaseous CF4 that can be used in flow field computer codes and theoretical analyses for comparison of results with experimental data from the Langley Hypersonic CF4 Tunnel are presented. The thermodynamic relations which are based on thermally perfect but calorifically imperfect gas are adequate for the testing environment of the CF4 tunnel and are simpler to use than the imperfect gas relations required to define the complete expansion from the tunnel reservoir. Relations for the transport properties are based on the kinetic theory of gases in which published experimental data are used in the derivation of the relations. Extensive experimental data were located for viscosity and the derived relation should provide values for viscosity with errors of less than 1 percent. The experimental data for thermal conductivity were limited with significant disagreement between the various sources. The derived relation will probably provide values for the thermal conductivity with errors of no more than 5 percent which is within the accuracy of the experimental data.
Document ID
19820007486
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Sutton, K. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
October 1, 1981
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NASA-TM-83220
Accession Number
82N15359
Funding Number(s)
PROJECT: RTOP 506-51-13-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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