Publication detail

Integrated parametric study of a hybrid-stabilized argon - water arc under subsonic, transonic and supersonic plasma flow regimes

JENIŠTA, J. TAKANA, H. NISHIYAMA, H. BARTLOVÁ, M. AUBRECHT, V. KŘENEK, P. HRABOVSKÝ, M. KAVKA, T. SEMBER, V. MAŠLÁNI, A.

Original Title

Integrated parametric study of a hybrid-stabilized argon - water arc under subsonic, transonic and supersonic plasma flow regimes

Type

journal article in Web of Science

Language

English

Original Abstract

This paper presents a numerical investigation of characteristics and processes in the worldwide unique type of thermal plasma generator with combined stabilization of arc by argon flow and water vortex, the so-called hybrid-stabilized arc. The arc has been used for spraying of ceramic or metallic particles and for pyrolysis of biomass. The net emission coefficients as well as the partial characteristics methods for radiation losses from the argon - water arc are employed. Calculations for 300 - 600 A with 22.5-40 standard litres per minute (slm) of argon reveal transition from a transonic plasma flow for 400 A to a supersonic one for 600 A with a maximum Mach number of 1.6 near the exit nozzle of the plasma torch. A comparison with available experimental data near the exit nozzle shows very good agreement for the radial temperature profiles. Radial velocity profiles calculated 2 mm downstream of the nozzle exit show good agreement with the profiles determined from the combination of calculation and experiment (the so-called integrated approach). A recent evaluation of the Mach number from the experimental data for 500 and 600 A confirmed the existence of the supersonic flow regime

Keywords

termické plazma, hybridní plazmatron, vodní plazma

Authors

JENIŠTA, J.; TAKANA, H.; NISHIYAMA, H.; BARTLOVÁ, M.; AUBRECHT, V.; KŘENEK, P.; HRABOVSKÝ, M.; KAVKA, T.; SEMBER, V.; MAŠLÁNI, A.

RIV year

2011

Released

14. 10. 2011

Publisher

IOP PUBLISHING LTD

ISBN

0022-3727

Periodical

Journal of Physics D: Applied Physics

Year of study

44

Number

43

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

20

Pages count

20

URL

http://iopscience.iop.org/0022-3727/44/43/435204/

BibTex

@article{BUT74560,
  author="Jiří {Jeništa} and H. {Takana} and H. {Nishiyama} and Milada {Bartlová} and Vladimír {Aubrecht} and Petr {Křenek} and Milan {Hrabovský} and Tatiana {Kavka} and Vladimír {Sember} and Alan {Mašláni}",
  title="Integrated parametric study of a hybrid-stabilized argon - water arc under subsonic, transonic and supersonic plasma flow regimes",
  journal="Journal of Physics D: Applied Physics",
  year="2011",
  volume="44",
  number="43",
  pages="1--20",
  issn="0022-3727",
  url="http://iopscience.iop.org/0022-3727/44/43/435204/"
}