Entrainment of cold gas into thermal plasma jets View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1991-12

AUTHORS

E. Pfender, J. Fincke, R. Spores

ABSTRACT

There is increasing evidence that the entrainment of cold gas surrounding a turbulent plasma jet is more of an engulfment type process rather than simple diffusion. A variety of diagnostic techniques have been employed to determine the development of turbulence in a plasma jet and to measure concentration and temperatures of the cold gas entrained into atmospheric-pressure argon plasma jets in ambient argon or air. The results indicate that the transition to turbulence causes a rapid drop of the axial jet velocity due to entrainment of the cold gas surrounding the plasma jet. Dissipation of the cold engulfed gas bubbles by molecular diffusion is relatively slow if molecular gases (for example air) are entrained, as indicated by conditional sampling and CARS measurements. Temperature measurements using emission spectroscopy and enthalpy probes show strong discrepancies in the jet fringes. More... »

PAGES

529-543

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf01447164

DOI

http://dx.doi.org/10.1007/bf01447164

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1009646620


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