Skip to Main content Skip to Navigation
Journal articles

MHD modeling of rotating arc under restrike mode in ‘Kvaerner-type’ torch: part I. Dynamics at 1 bar pressure

Abstract : This paper focuses on the 3D MHD modeling of an arc plasma at industrial level; the torch is a 'Kvaerner-type' one, made of two concentric graphite electrodes and where spots are displaced with an external magnetic field. Different phenomenologies in arc movement were observed, ranging from a gliding arc on electrodes surfaces to hopping arc foots, agreeing with previous experimental works at atmospheric pressure. These dynamics have non-negligible consequences in the plasma process: the hopping mode induces more erosion due to a higher heat flux at the electrodes surfaces in comparison to the gliding arc; the latter mode results also in a strong gas swirling inside the torch, thus longer particles residence time is predicted.
Document type :
Journal articles
Complete list of metadata

https://hal-mines-paristech.archives-ouvertes.fr/hal-02406871
Contributor : Magalie Prudon <>
Submitted on : Thursday, December 12, 2019 - 11:54:24 AM
Last modification on : Monday, September 20, 2021 - 6:21:04 PM

Identifiers

Citation

Papa Gueye, Yann Cressault, Vandad-Julien Rohani, Laurent Fulcheri. MHD modeling of rotating arc under restrike mode in ‘Kvaerner-type’ torch: part I. Dynamics at 1 bar pressure. Journal of Physics D: Applied Physics, IOP Publishing, 2019, 52 (13), pp.135202. ⟨10.1088/1361-6463/aaff3c⟩. ⟨hal-02406871⟩

Share

Metrics

Record views

124