An investigation of local thermodynamic equilibrium in an argon plasma jet at atmospheric pressure

1989 ◽  
Vol 41 (5) ◽  
pp. 369-376 ◽  
Author(s):  
Vivek Bakshi ◽  
Robert J. Kearney
Keyword(s):  
Thermodynamic Equilibrium ◽  
Atmospheric Pressure ◽  
Local Thermodynamic Equilibrium ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Argon Plasma Jet

Influence of Additive Gas on Electrical and Optical Characteristics of Non-equilibrium Atmospheric Pressure Argon Plasma Jet

2011 ◽  
Vol 13 (5) ◽  
pp. 575-582 ◽  
Author(s):  
Xiaomeng Fei ◽  
Shin-ichi Kuroda ◽  
Yuki Kondo ◽  
Tamio Mori ◽  
Katsuhiko Hosoi
Keyword(s):  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Optical Characteristics ◽  
Argon Plasma Jet ◽  
Non Equilibrium

Mathematical Modeling of a Free Plasma Jet Discharging into Air and Comparison with Probe Measurements

1997 ◽  
Author(s):  
R. Bolot ◽  
M. Imbert ◽  
C. Coddet
Keyword(s):  
Local Thermodynamic Equilibrium ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Equilibrium Composition ◽  
Physical Phenomena ◽  
Plasma Spraying Process ◽  
Spraying Process ◽  
Free Plasma ◽  
Argon Plasma Jet ◽  
Probe Measurements

Abstract Plasma spraying process modeling is useful to understand physical phenomena and to decrease the number of experiments. In this paper, a study of the external plasma jet is proposed: the PHOENICS™ CFD code was used with a 2D axisymmetrical geometry and a standard K-ε turbulence model. In a first step, thermodynamic and transport properties were calculated from chemical equilibrium composition, thermodynamic derivatives and kinetic theory of gases. Local Thermodynamic Equilibrium (LTE) was assumed for both plasma and surrounding gases. The proposed numerical results were computed for comparison with temperature measurements realized by Brossa and Pfender in the case of an argon plasma jet discharging into air, using enthalpy probes. The predictions were found reasonably accurate. The influence of the surrounding gas nature was also verified as the validity of the parabolic assumption.

Optical Property of The Atmospheric Pressure Argon Plasma Jet Generated by Three Types of Electrodes

2018 ◽  
Vol 39 (4) ◽  
pp. 547-554
Author(s):  
唐蕾 TANG Lei ◽  
王永杰 WANG Yong-jie ◽  
袁春琪 YUAN Chun-qi ◽  
尹增谦 YIN Zeng-qian
Keyword(s):  
Optical Property ◽  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Argon Plasma Jet

Atmospheric pressure argon plasma jet using a cylindrical piezoelectric transformer

2009 ◽  
Vol 95 (21) ◽  
pp. 211501 ◽  
Author(s):  
Hyun Kim ◽  
Albrecht Brockhaus ◽  
Jürgen Engemann
Keyword(s):  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Plasma Jet ◽  
Piezoelectric Transformer ◽  
Argon Plasma Jet

Development and Characterization of a Portable Atmospheric-Pressure Argon Plasma Jet for Sterilization

2015 ◽  
Author(s):  
Zhi-Hua Lin ◽  
Jong-Shinn Wu ◽  
Chen-Yon Tobias Tschang ◽  
Chi-Feng Su ◽  
Tuoh Wu ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Atmospheric Pressure Plasma ◽  
Plasma Jet ◽  
Gas Temperature ◽  
E Coli ◽  
Bacteria Inactivation ◽  
Argon Plasma Jet ◽  
Absorption Power

In this study, we would like to develop a portable round argon atmospheric-pressure plasma jet (APPJ) which can be applied for general use of bacteria inactivation. The APPJ was characterized electrically and optically, which include measurements of absorption power, gas temperature and optical properties of plasma generated species. Measured OH* number density at 5 mm downstream was estimated to be 5.8 × 1015 cm−3 and the electron density and electron temperature were estimated to be 2.4 × 1015 cm−3 and 0.34 eV, respectively, in the discharge region. This APPJ was demonstrated to effectively inactivate E. coli within seconds of treatment, which shows its great potential in the future use of general bacteria inactivation and sterilization.

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