Počet záznamů: 1

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

  1. 1.
    0365671 - UFP-V 2012 RIV GB eng J - Článek v odborném periodiku
    Jeništa, Jiří - Takana, H. - Nishiyama, H. - Bartlová, M. - Aubrecht, V. - Křenek, Petr - Hrabovský, Milan - Kavka, Tetyana - Sember, Viktor - Mašláni, Alan
    Integrated parametric study of a hybrid-stabilized argon–water arc under subsonic, transonic and supersonic plasma flow regimes.
    Journal of Physics D-Applied Physics. Roč. 44, č. 43 (2011), s. 435204-435204 ISSN 0022-3727
    Grant CEP: GA ČR GAP205/11/2070
    Výzkumný záměr: CEZ:AV0Z20430508
    Klíčová slova: hybrid-stabilized electric arc * mass flow rate * net emission coefficients * partial characteristics * Mach number * shock diamonds
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    Impakt faktor: 2.544, rok: 2011
    http://iopscience.iop.org/0022-3727/44/43/435204/pdf/0022-3727_44_43_435204.pdf http://iopscience.iop.org/0022-3727/44/43/435204/pdf/0022-3727_44_43_435204.pdf

    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 300–600A with 22.5–40 standard litres per minute (slm) of argon reveal transition from a transonic plasma flow for 400A to a supersonic one for 600A 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 2mm downstream of the nozzle exit show good agreement with the profiles determined from the combination
    Trvalý link: http://hdl.handle.net/11104/0200857