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Title: Heat flux characteristics in an atmospheric double arc argon plasma jet

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.2998579· OSTI ID:21175653
; ; ;  [1];  [2]
  1. Zhejiang University, Hangzhou 310027 (China)
  2. UMR 6614 CNRS CORIA, Saint Etienne du Rouvray 76801 (France)

In this study, the axial evolution of heat flux excited by a double arc argon plasma jet impinging on a flat plate is determined, while the nonstationary behavior of the heat flux is investigated by combined means of the fast Fourier transform, Wigner distribution, and short-time Fourier transform. Two frequency groups (<1 and 2-10 kHz) are identified in both the Fourier spectrum and the time-frequency distributions, which suggest that the nature of fluctuations in the heat flux is strongly associated with the dynamic behavior of the plasma arc and the engulfment of ambient air into different plasma jet regions.

OSTI ID:
21175653
Journal Information:
Applied Physics Letters, Vol. 93, Issue 15; Other Information: DOI: 10.1063/1.2998579; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
Country of Publication:
United States
Language:
English