Fluctuation-Coupling of Cathode Cavity Pressure and Arc Voltage in a dc Plasma Torch with a Long Inter-Electrode Channel at Reduced Pressure

2014 ◽  
Vol 31 (11) ◽  
pp. 115202
Author(s):  
Jin-Wen Cao ◽  
He-Ji Huang ◽  
Wen-Xia Pan
Keyword(s):  
Plasma Torch ◽  
Cavity Pressure ◽  
Dc Plasma ◽  
Reduced Pressure ◽  
Cathode Cavity ◽  
Arc Voltage

Energy balance for a DC plasma torch

1980 ◽  
Vol 58 (2) ◽  
pp. 171-176 ◽  
Author(s):  
Azhar Bokari ◽  
Maher Boulos
Keyword(s):  
Energy Balance ◽  
Plasma Torch ◽  
Dc Plasma

DC Plasma Torch Design and Performance

2017 ◽  
pp. 1-63
Author(s):  
Maher I. Boulos ◽  
Pierre Fauchais ◽  
Emil Pfender
Keyword(s):  
Plasma Torch ◽  
Dc Plasma ◽  
Torch Design ◽  
And Performance

scholarly journals Influence of the inlet gas velocity components on the survival of the vertex of gas in the plasma torch

2019 ◽  
Vol 14 (1) ◽  
pp. 1-10
Author(s):  
M. Gharaeinia ◽  
S. Saviz ◽  
A. H. Sari
Keyword(s):  
Plasma Torch ◽  
Gas Injection ◽  
Three Dimensional ◽  
Time Dependent ◽  
Axial Component ◽  
Plasma Structure ◽  
Gas Velocity ◽  
Dc Plasma ◽  
Cold Gases ◽  
Gas Viscosity

Abstract The vortex gas injection into plasma torch is considered as a method for reducing electrodes erosion. In order to investigate the effects of vortex gas injection on plasma structure, as well as the effect of gas viscosity on the rate of rotation, a three-dimensional nonequilibrium and time-dependent non-transferred DC plasma torch model has been simulated. Viewing the general characteristics of the plasma shows that the model works well. The results have shown that if the components of the inlet gas velocity are not properly selected, it is possible that the rotary effects of the gas are greatly depleted even before the gas reaches the cathode tip and plasma formation. In this case, only the change in the axial component of the gas causes changes in the structure of the plasma. Vortex reduction is also observed during the movement of cold gases. It is observed that the change in viscosity of gas has significant effects on the rate of the vortex.

scholarly journals Study of jet fluctuations in DC plasma torch using high speed camera

2010 ◽  
Vol 208 ◽  
pp. 012134 ◽  
Author(s):  
Nirupama Tiwari ◽  
S N Sahasrabudhe ◽  
N K Joshi ◽  
A K Das
Keyword(s):  
Plasma Torch ◽  
High Speed ◽  
High Speed Camera ◽  
Dc Plasma
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