Open AccessEstimation of the Intensively Blasted Electric Arc Model Sensitivity to Selected Variables
Author(s) -
Josef Senk,
Ilona Lázníčková,
Ivana Jakubová,
Oldřich Coufal
Publication year - 2019
Publication title -
plasma physics and technology
Language(s) - English
Resource type - Journals
eISSN - 2336-2634
pISSN - 2336-2626
DOI - 10.14311/ppt.2019.1.47
Subject(s) - arc (geometry) , cathode , radius , anode , mechanics , electric arc , sensitivity (control systems) , materials science , current (fluid) , mathematics , electrode , electrical engineering , physics , thermodynamics , geometry , engineering , electronic engineering , computer science , computer security , quantum mechanics
Results of measurements carried out on the fabricated experimental modular-type arc heater serve as input data for the designed simplified model of the intensively blasted electric arc burning in argon inside the cylindrical arc heater's anode channel. The axial dependence of the arc temperature and radius is expressed using the exponent, the current density on the cathode tip and the arc temperature at the end of the near-cathode boundary layer. These quantities form the vector of state variables that is sought to minimize the value of the objective function expressing the deviations between measured and computed values. On a typical example, the paper demonstrates the sensitivity of the modelling to individual state variables.