Estimation of the Intensively Blasted Electric Arc Model Sensitivity to Selected Variables
Keywords:electric arc, arc heater, argon, modeling
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.
J. Senk, I. Laznickova, and I. Jakubova. Estimation of electric arc power loss using net emission coeﬃcient of argon. In Proceedings of EPE 2018. Brno Univ. of Technology, 2018. doi:10.1109/EPE.2018.8396015.
J. Senk, I. Jakubova, and I. Laznickova. Analysis of intensively blasted electric arc burning in the arc heater’s anode channel. Acta Polytechnica, 56(5):395–401, 2016. doi:10.14311/AP.2016.56.0395.
J. Senk, I. Jakubova, and I. Laznickova. Updated version of the simpliﬁed model of intensively blasted electric arc. Acta Polytechnica, 58(4):264–270, 2018. doi:10.14311/AP.2018.58.0264.
A. Farmer and G. Haddad. Material Functions and Equilibrium Composition of argon and Nitrogen Plasma. Csiro Division of Applied Physics, 1989.
O. Coufal. Composition and thermodynamic properties of thermal plasma up to 50 kk. J Phys D Appl. Phys, 40(11):3371–3385, 2007. doi:10.1088/0022-3727/40/11/018.
P. Kloc. Computed values of net emission coeﬃcient of argon. Private communication, 2018.
H. Schlichting. Grenzschicht Theorie. Verlag G. Braun, Karlsruhe, Germany, 1965.
J. Lowke. Predictions of arc temperature proﬁles using approximate emission coeﬃcients for radiation losses. J Quant Spectrosc Radiat Transfer, 14:111–122, 1974. doi:10.1016/0022-4073(74)90004-1.
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