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Mostrando ítems 11-20 de 31
Experimental Characterization of a Low-Current Cutting Torch.
(2004)
An experimental characterization of a low-current (30-40 A) cutting torch is presented. To avoid contamination
of the plasma arc by removed anode material, a rotating steel cylinder was used as the anode and the arc ...
Ambient Species Density and Gas Temperature Radial Profiles Derived from a Schlieren Technique in a Low Frequency Non-thermal Oxygen Plasma Jet.
(2017)
A quantitative interpretation of the schlieren technique applied to a non-thermal
atmospheric-pressure oxygen plasma jet driven at low-frequency (50 Hz) is reported. The
jet was operated in the turbulent regime with a ...
Modelling of the Plasma–Sheath Boundary Region in Wall-Stabilized Arc Plasmas: Unipolar Discharge Properties.
(2017)
A two-dimensional model of the non-equilibrium unipolar discharge occurring
in the plasma–sheath boundary region of a transferred-arc was developed. This model was
used to study the current transfer to the nozzle (1 mm ...
Modelling of an Atmospheric Pressure Nitrogen Glow Discharge Operating in High-Gas Temperature Regimes.
(2016)
A model of an atmospheric pressure nitrogen glow discharge in high-gas tem perature regimes is developed. The model considers a fairly complete set of chemical
reactions, including several processes with the participation ...
On the Gas Heating Mechanism for the Fast Anode Arc Reattachment in a Non-transferred Arc Plasma Torch Operating with Nitrogen Gas in the Restrike Mode.
(2015)
The present work provides a detailed kinetic analysis of the time-resolved
dynamics of the gas heating during the arc reattachment in nitrogen gas in order to
understand the main processes leading to such a fast reattachment. ...
On the use of the double floating probe method to infer the difference between the electron and the heavy particles temperatures in an atmospheric pressure, vortexstabilized nitrogen plasma jet.
(2014)
Sweeping double probe measurements in an atmospheric pressure direct current vortex-stabilized
plasma jet are reported (plasma conditions: 100 A discharge current, N2 gas flow rate of 25 Nl/min,
thoriated tungsten rod-type ...
Numerical investigation of the double-arcing phenomenon in a cutting arc torch.
(2014)
A numerical investigation of the double-arcing phenomenon in a cutting arc torch is reported.
The dynamics of the double-arcing were simulated by using a two-dimensional model of the gas
breakdown development in the ...
On the space-charge boundary layer inside the nozzle of a cutting torch.
(2009)
A numerical study of the space-charge sheath adjacent to the nozzle wall of a cutting torch is
presented. The hydrodynamic model corresponds to a collision-dominated sheath and does not
assume cold ions, so drift-diffusion-type ...
On the physical origin of the nozzle characteristic and its connection with the double-arcing phenomenon in a cutting torch.
(2009)
The nozzle current-voltage characteristic for a cutting arc is presented in this work. The
measurements are reported using a high energy density cutting arc torch with a nozzle bore radius
of 0.5 mm. The arc current was ...