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Title: Effect of dielectric wall temperature on plasma plume in an argon atmospheric pressure discharge

In this letter, the effect of the dielectric wall temperature on the length and volume of an atmospheric pressure plasma jet (APPJ) is investigated using a single-electrode configuration driven with an AC power supply. To distinguish the APPJ status from the argon flow rate, the three modes, laminar, transition, and turbulent, are separated. When the dielectric wall is heated, the APPJ length and volume are enhanced. Also, the transition regions remarkably expand over a large range of flow rates. The results indicate that different factors contribute to the expansion of the transition region. The increase in the radial and axial velocities is the main cause of the expansion of the transition region to the low-velocity region. The expansion to the high-velocity region is dominantly induced by a change in the viscosity.
Authors:
; ; ;  [1] ; ;  [2]
  1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001 (China)
  2. Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150001 (China)
Publication Date:
OSTI Identifier:
22299641
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ARGON; ATMOSPHERIC PRESSURE; CONFIGURATION; DIELECTRIC MATERIALS; ELECTRODES; EXPANSION; FLOW RATE; LENGTH; PLASMA JETS; VELOCITY