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Coherent Anti-Stokes Raman Spectroscopic Measurement of Air Entrainment in Argon Plasma Jets

Published online by Cambridge University Press:  21 February 2011

J. R. Fincke ,
R. Rodriguez  and
C. G. Pentecost
J. R. Fincke
Affiliation:
Idaho National Engineering Laboratory EG&G Idaho, Inc., Idaho Falls, ID
R. Rodriguez
Affiliation:
Idaho National Engineering Laboratory EG&G Idaho, Inc., Idaho Falls, ID
C. G. Pentecost
Affiliation:
Idaho National Engineering Laboratory EG&G Idaho, Inc., Idaho Falls, ID
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Abstract

The concentration and temperature of air entrained into an argon plasma jet have been measured using coherent anti-Stokes Raman spectroscopy (CARS). The flow field is characterized by a short region of well behaved laminar flow near the nozzle exit followed by an abrupt transition to turbulence. Once the transition to turbulence occurs, air is rapidly entrained into the jet core. The location of the transition region is determined by the rapid cooling of the jet and the resulting increase in Reynolds number.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 190: Symposium M – Plasma Processing and Synthesis of Materials III , 1990 , 184
Copyright
Copyright © Materials Research Society 1991

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References

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