Title :
Investigation of anode and cathode jets influence on electric arc properties with current up to 500 kA
Author :
Rutberg, Ph.G. ; Bogomaz, A.A. ; Budin, A.V. ; Kolikov, V.A. ; Pinchuk, E. ; Pozubenkov, A.A.
Author_Institution :
Inst. of Probs. of Electrophys., Acad. of Sci., St. Petersburg, Russia
Abstract :
Summary form only given, as follows. Arcs with discharge current amplitude up to 500 kA were investigated in hydrogen and air at initial pressure from 0.1 MPa up to 40 MPa. It was found that anode and cathode jets influence both on the discharge channel properties and heat transfer between the arc and the surrounding gas: 1. High temperatures at the jet base can influence on the rate of discharge channel expansion by photoionization of metal vapor of ignition wire. 2. Formation of shock-compression zones because of jet interaction with the electrodes and themselves results in increase of voltage drop on the arc. 3. Powerful vortex motion of gas near the discharge chamber walls appears due to the jets and it intensifies heat transfer between the arc and the surrounding gas.
Keywords :
anodes; arcs (electric); cathodes; heat transfer; photoionisation; plasma flow; plasma jets; plasma shock waves; plasma transport processes; vortices; 0.1 to 40 MPa; 500 kA; anode jets; cathode jets; discharge chamber walls; discharge channel expansion; discharge channel properties; electric arc properties; electrodes; heat transfer; ignition wire metal vapor; jet interaction; photoionization; shock-compression zones; voltage drop; vortex motion; Anodes; Cathodes; Electrodes; Heat transfer; Hydrogen; Ignition; Ionization; Temperature; Voltage; Wire;
Conference_Titel :
Pulsed Power Plasma Science, 2001. IEEE Conference Record - Abstracts
Conference_Location :
Las Vegas, NV, USA
Print_ISBN :
0-7803-7141-0
DOI :
10.1109/PPPS.2001.960959
