NDLI: Effects of fluid flow on the characteristics of an atmospheric pressure low temperature plasma jet

Content Provider	IEEE Xplore Digital Library
Author	Karakas, E. Koklu, M. Begum, A. Laroussi, M.
Copyright Year	2009
Description	Author affiliation: Laser & Plasma Engineering Institute, USA (Karakas, E.; Begum, A.; Laroussi, M.) \|\| Department of Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA (Koklu, M.)
Abstract	Recently interest in low temperature atmospheric pressure plasma jets has increased due to their unique capabilities and novel applications [1], such as biomedicine. Prior experimental results showed that low temperature plasma jets are in fact trains of plasma bullets/packets traveling at supersonic velocities. This is especially interesting because the plasma bullets travel in a region free of any external electric field. Although Lu and Laroussi [2] explained this phenomenon by photoionization, how the bullets form and how they reach such high velocities are still not well-understood issues. Additionally, some properties of the plasma jets, such as the plasma plume length, homogeneity, bullet's shape etc., are directly affected by the fluid flow, the geometry of the electrodes, and the characteristics of the applied high voltage pulse. In this paper, the fluid dynamics and electrostatic simulations of the plasma pencil are performed by a commercially available, partial differential equation solver based on Finite Element Method. We found that if the fluid velocity value is more than 10 m/s, the plasma plume starts to fluctuate and becomes unstable. In addition, the length and homogeneity of the plasma plume are directly related to the applied high voltage (magnitude and pulse width) and the fluid velocity values. These numerical simulations contribute some insights for future theoretical explanations and allow us to determine the optimum operation conditions of the plasma pencil.
Starting Page	1
Ending Page	1
File Size	103839
Page Count	1
File Format	PDF
ISBN	9781424426171
ISSN	07309244
DOI	10.1109/PLASMA.2009.5227275
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma temperature Fluid flow Atmospheric-pressure plasmas Plasma properties Plasma applications Plasma simulation Voltage Ionization Shape Geometry
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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