Large-Eddy Simulation of Subsonic-Supersonic Flow and Heat Transfer in a Hybrid Gas-Water Stabilized Arc

13th High-Tech Plasma Processes Conference

Jenita, J.^1 ; Takana, H.^2 ; Nishiyama, H.^2 ; Bartlová, M.^3 ; Aubrecht, V.^3 ; Kenek, P.^1

Institute of Plasma Physics AS CR, V.v.i., Za Slovankou 3, Praha 8

182 00, Czech Republic^1

Institute of Fluid Science, Tohoku University, 2-1-1 Katahira Aoba-ku, Miyagi, Sendai

980-8577, Japan^2

Brno University of Technology, Technická 8, Brno

616 00, Czech Republic^3

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/550/1/012016/pdf
DOI  :  10.1088/1742-6596/550/1/012016

来源: IOP

【 摘 要 】

The paper presents numerical simulations of the turbulence effect in the discharge and near-outlet regions of the hybrid-stabilized argon-water electric arc. Calculations were carried out for the assumption of laminar and turbulent plasma flow models, respectively. Results of simulation for currents 300-600 A on a fine numerical grid show that the influence of turbulence is weak and the maximum difference for all the monitored physical quantities is less than 2% in the discharge region and less than 6% in the near-outlet region. Comparison with experimental temperature profiles exhibits good agreement.