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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.
https://hal-mines-paristech.archives-ouvertes.fr/hal-02406871
Contributor : Magalie Prudon Connect in order to contact the contributor
Submitted on : Thursday, December 12, 2019 - 11:54:24 AM
Last modification on : Wednesday, November 17, 2021 - 12:32:41 PM
Contributor : Magalie Prudon Connect in order to contact the contributor
Submitted on : Thursday, December 12, 2019 - 11:54:24 AM
Last modification on : Wednesday, November 17, 2021 - 12:32:41 PM