Browsing by Author "Mancinelli, Beatriz"
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Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet
Prevosto, Leandro; Kelly, Héctor; Mancinelli, Beatriz (2012-09-19)Langmuir probe measurements in an atmospheric pressure direct current (dc) plasma jet are reported. Sweeping probes were used. The experiment was carried out using a dc non–transferred arc torch with a rod–type cathode ... -
Numerical Modelling of a Cutting Arc Torch
Mancinelli, Beatriz; Minotti, Fernando O.; Prevosto, Leandro; Kelly, Héctor (Jan Awrejcewicz. INTECH, 2014-02-14)Plasma cutting is a process of metal cutting at atmospheric pressure by an arc plasma jet, where a transferred arc is generated between a cathode and a work-piece (the metal to be cut) acting as the anode . Small nozzle ... -
On the dynamics of cutting arc plasmas: the role of the power supply ripple
Prevosto, Leandro; Mancinelli, Beatriz; Kelly, Héctor (ADVANCED ELECTROMAGNETICS, 2012-08)The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma ... -
On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime
Prevosto, Leandro; Kelly, Héctor; Mancinelli, Beatriz; Chamorro, J.C; Cejas, Ezequiel (2015-02-06)Low-frequency (100 Hz), intermediate-current (50 to 200 mA) glow discharges were experimentally investigated in atmospheric pressure air between blunt copper electrodes. Voltage–current characteristics and images of the ... -
On the use of the Prandtl mixing length model in the cutting torch modeling.
Mancinelli, Beatriz; Minotti, Fernando O.; Kelly, Héctor (2011-05-25)The Prandtl mixing length model has been used to take into account the turbulent effects in a 30 A high-energy density cutting torch model. In particular, the model requires the introduction of only one adjustable coefficient ...