Gas dynamics of the pulsed electric arc in the transversal magnetic field. (27th July 2020)

• Record Type: Journal Article
• Authors: Moralev, Ivan; Kazanskii, Pavel; Bityurin, Valentin; Bocharov, Alexey; Firsov, Alexander; Dolgov, Eugenii; Leonov, Sergey
• Is Part Of: Journal of physics. Volume 53:Number 42(2020)
• Publication Date: 2020-07-27
• Subjects: plasma actuators -- vortex generator -- MHD -- electric arc; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/ab9d5a
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: The arc discharge in magnetic field is one of the promising methods to intensify the kinematic transport in various systems. In this work, a detailed study of the flow arising in ambient air during the movement of a pulsed arc in external magnetic field was done. The study was performed using PIV and shadow flow visualization in parallel with the numerical modeling in a 2D MHD approach. The flow evolution during the electric current pulse was analyzed based on the vorticity generation equation. The flow relaxation after the current termination is considered, indicating a significant reduction of the gas velocity after the current termination due to rarefaction waves propagation. The typical flow structure remaining after the MHD interaction is a toroidal vortex with velocity magnitude up to 0.4 of the maximum arc movement velocity during the pulse.