Number of the records: 1
Radiation in water-vortex stabilized electric arc-comparsion among different models
- 1.
SYSNO ASEP 0101187 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Radiation in water-vortex stabilized electric arc-comparsion among different models Title Záření v obloukovém výboji se stabilizací vodním vírem – porovnání různých radiačních modelů Author(s) Jeništa, Jiří (UFP-V) RID, ORCID
Bartlová, M. (CZ)
Aubrecht, V. (CZ)Source Title High Temperature Materials and Processes - ISSN 1093-3611
Roč. 8, č. 2 (2004), s. 195-206Number of pages 12 s. Action E-MRS 2004 Spring Meeting(TPP8 Thermal Plasma Processes). Event date 24.05.2004-28.05.2004 VEvent location Strasburg Country FR - France Event type EUR Language eng - English Country US - United States Keywords arc, divergence of radiation flux, partial characteristics, radiation model, reabsorption Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GA202/02/1027 GA ČR - Czech Science Foundation (CSF) Annotation The present paper deals with numerical modelling of electric arc stabilized by water vortex. Two-dimensional axisymmetric model includes the arc discharge area between the cathode and the outlet nozzle of the water plasma torch. Thermal, electrical and fluid-dynamic characteristics as well as power losses of such arc has been studied for the range of currents 150-600 A and three different radiation models (net emission coefficient, net emission approach with reabsorption, partial characteristics). It was proved that the amount of energy losses transferred radially from the arc by conduction and radiation range between 70 and 35 % of the input power. Temperature and velocity fields within the discharge are close to each other for the partial characteristics model and for the net emission model with zero reabsorption of radiation. Calculations carried out by the partial characteristics method showed that reabsorption of radiation in arc fringes reaches about 26 % for the studied range of currents. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2005
Number of the records: 1