Measurements of 3D slip velocities and plasma column lengths of a gliding arc discharge

Journal Article · Mon Jan 26 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4906928· OSTI ID:22415215

Zhu, Jiajian; Gao, Jinlong; Ehn, Andreas; Aldén, Marcus; Li, Zhongshan ^[1]; Moseev, Dmitry ^[2]; Kusano, Yukihiro ^[3]; Salewski, Mirko ^[4]; Alpers, Andreas; Gritzmann, Peter; Schwenk, Martin ^[5]

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1. Division of Combustion Physics, Lund University, P.O. Box 118, S-221 00 Lund (Sweden)
2. Max-Planck-Institut für Plasmaphysik, D-85748 Garching bei München (Germany)
3. Department of Wind Energy, Section for Composites and Materials Mechanics, Technical University of Denmark, Risø Campus, Frederiksborgvej 399, DK-4000 Roskilde (Denmark)
4. Department of Physics, Section for Plasma Physics and Fusion Energy, Technical University of Denmark, DK-2800 Kongens Lyngby (Denmark)
5. Zentrum Mathematik, Technische Universität München, D-85747 Garching bei München (Germany)

A non-thermal gliding arc discharge was generated at atmospheric pressure in an air flow. The dynamics of the plasma column and tracer particles were recorded using two synchronized high-speed cameras. Whereas the data analysis for such systems has previously been performed in 2D (analyzing the single camera image), we provide here a 3D data analysis that includes 3D reconstructions of the plasma column and 3D particle tracking velocimetry based on discrete tomography methods. The 3D analysis, in particular, the determination of the 3D slip velocity between the plasma column and the gas flow, gives more realistic insight into the convection cooling process. Additionally, with the determination of the 3D slip velocity and the 3D length of the plasma column, we give more accurate estimates for the drag force, the electric field strength, the power per unit length, and the radius of the conducting zone of the plasma column.

• OSTI ID: 22415215
• Journal Information: Applied Physics Letters, Vol. 106, Issue 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIR FLOW
ATMOSPHERIC PRESSURE
CAMERAS
DATA ANALYSIS
ELECTRIC ARCS
ELECTRIC FIELDS
PLASMA
SLIP VELOCITY
THREE-DIMENSIONAL CALCULATIONS
TOMOGRAPHY