Investigation of the Arc-Anode Attachment Area by Utilizing a High-Speed Camera
Keywords:plasma, arc, anode, attachment, camera, waveGrant Agency of the Czech Republic under the project GA15-19444S
AbstractThe arc-anode attachment in the DC plasma arc influences power distribution in the plasma, a lifespan of anode and flow structure of plasma jet. A movement of the attachment and the surrounding plasma was directly observed by using a high-speed camera (max. 1,080,000 fps). The observations were compared with cathode-anode voltage measurements (sample rate 80 MHz). We have directly measured the average velocity of the attachments and hydrodynamic waves above them, as well as the characteristic dwell times and dwell frequencies of the attachments.
Brezina V. New plasma spraying torch with combined gas-liquid stabilization of arc. In Proc. of the 15th Int. Symp. on Plasma Chem., Orleans, France, 3:1021–1026, 2001.
Kavka T., Matejicek J., Ctibor P., Maslani A., and Hrabovsky M. Plasma spraying of copper by hybrid water-gas dc arc plasma torch. J. Therm. Spray Technol., 20:760–774, 2011.
Hlina M., Hrabovsky M., Kavka T., and Konrad M. Production of high quality syngas from argon/water plasma gasiﬁcation of biomass and waste. Waste management, 34:63–66, 2014.
Kavka T., Chumak O., Sonsky J., Heinrich M., Stehrer T., and Pauser H. Experimental study of anode processes in plasma arc cutting. J. Phys. D: Appl. Phys., 46(0652502):11, 2013.
Boselli M., Colombo V., Ghedini E., Gherardi M., and Sanibondi P. Two-dimensional time-dependent modelling of fume formation in a pulsed gas metal arc welding process. J. Phys. D: Appl. Phys., 46(224009):11, 2013.
Eckert E. R. G., Pfender E., and Wutzke S. A. Study of electric arc behavior with superimposed ﬂow. AIAA Journal, 5:707–713, 1967.
Zhukov M. F. Applied dynamics of thermal plasma. Second printing. Izdatel’stvo Nauka, Novosibirsk, Russia, 1975.
Hrabovsky M. Destruction of liquid organic compounds in hydrogen-oxygen thermal plasma jet. Progress in Plasma Processing of Materials, 1:1–8, 1997.
Hrabovsky M., Konrad M., Kopecky V., Hlina J., Benes J., and Vesely E. Motion of anode attachment and ﬂuctuations of plasma jet in dc arc plasma torch. High Temp. Mater. Processes, 1:167–168, 1997.
Chumak O. M. Experimental observations of arc-anode attachment in steam-argon-air environment. Journal of Physics: Conference Series, 406(012009), 2012.
Wutzke S. A. Conditions Governing the Symptomatic Behaviour of an Electric Arc in a Superimposed Flow Field. Ph.D. Thesis, University of Minnesota, 1967.
Russ S. Anode arc attachment control using boundary layer bleed holes. Proc. of the 1993 NTSC, Anaheim, CA, pages 97–103, 1993.
Kopecky V. and Hrabovsky M. Determination of ﬂow velocity from analysis of hydrodynamic oscillations of thermal plasma jet. High Temp. Mater. Processes, 7:23–28, 2009.
Kopecky V. Dependence of frequency and phase velocity of plasma jet hydrodynamic instability on sound velocity. Czech. J. Phys., 54:C1056–C1061, 2004.
Hrabovsky M. Investigation of rayleigh instability in thermal plasma jet generated by plasma torch with external anode. Proc. of the15th Int. Symp. on Plasma Chem., Orleans, Gremi, CNRS University of Oreans, pages 861–866, 2001.
Kopecky V. and Hrabovsky M. Resonant excitation of boundary layer instability of dc arc plasma jet by current modulation. Plasma Chem. Plasma Process., 31:827–838, 2011.
Kavka T. Full-Papers CD 18th Int. Symp. on Plasma Chem., in Kyoto, Japan, ISBN 978-4-9903773-4-2, 2007.
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