Search Results - "Nemchinsky, V."

Advances in Plasma Arc Cutting Technology: The Experimental Part of an Integrated Approach by Colombo, V., Concetti, A., Ghedini, E., Rotundo, F., Sanibondi, P., Boselli, M., Dallavalle, S., Gherardi, M., Nemchinsky, V., Vancini, M.

“…The experimental part of an integrated approach to design and optimization of plasma arc cutting devices will be presented; in particular results obtained…”
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Cathode erosion rate in high-pressure arcs: influence of swirling gas flow by Nemchinsky, V.

“…Cathode erosion in a 400-A arc burning in oxygen at 4-atm pressure was measured at different gas dynamic conditions near the cathode. The flow pattern near the…”
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Simple algorithm to calculate T-F electron emission current density by Nemchinsky, V.

“…The Gauss-Chebyshev quadrature formula is suggested to calculate the transparency of the potential barrier at the metal-vacuum boundary. It is shown that in…”
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Thermoelectric figure of merit of metal–semiconductor barrier structure based on energy relaxation length by Moyzhes, B., Nemchinsky, V.

“…The thermoelectric figure of merit is calculated for a compound material comprising thin semiconductor and wider metallic layers. The layers are perpendicular…”
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Arc Discharge Anode Reattachment: Simple Model by Nemchinsky, Valerian

“…Anode attachment of a nontransferred dc arc moves along the anode nozzle. Under the influence of the gas flow, it moves downstream thus elongating the arc…”
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Erosion of Thermionic Cathodes in Welding and Plasma Arc Cutting Systems by Nemchinsky, Valerian

“…Thermionic arc cathodes are the cathodes where thermionic emission is the main electron emission mechanism. They are used in welding (Tungsten pure or doped…”
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On Conductivity of Cold Gas Layer Separating Arc Column and Nozzle in Nontransferred Plasma Arc (Anode Reattachment Process in Plasma Spray Systems) by Nemchinsky, Valerian

“…The nozzle serves as an anode in systems for plasma arc spraying. In these systems, the anode attachment moves downstream along the nozzle under the influence…”
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Two modes of anode operation in arc with ablating anode by Nemchinsky, V., Raitses, Y.

“…The arc discharge with ablating carbon anode is widely used for synthesis of nanomaterials. At a given current, the anode ablation rate depends on the anode…”
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Self-Consistent Numerical Simulation of Carbon Arc for Nanoparticle Synthesis by Khrabry, A., Khodak, A., Kaganovich, I., Vekselman, V., Nemchinsky, V.

“…Self-consistent model of atmospheric pressure carbon arc discharge in helium atmosphere was developed in the framework of the nanoparticle synthesis project 1…”
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The role of thermocapillary instability in heat transfer in a liquid metal pool by Nemchinsky, Valerian A.

“…During the treatment of metal with concentrated heat sources (plasma and laser welding, cutting etc.), high temperature gradients are created within the liquid…”
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Influence of current ripple on the tungsten cathode erosion by Mitrofanov, N. K., Zabello, K. K., Nemchinsky, V. A., Shkol’nik, S. M.

“…The erosion of a thermionic tungsten cathode is studied. Arc burning conditions under which gas–vapor erosion causes cathode mass losses are determined. It is…”
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Evaporation recoil force during plasma arc spraying by Nemchinsky, V.

“…Summary form only given. A particle's surface is not heated uniformly during plasma arc spraying: that side of the surface, which faces the torch, is hotter…”
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Two modes of cathode spot operation at high-current high pressure arc by Nemchinsky, V.

“…Summary form only given. According to the currently most accepted model, current density at the refractory cathode of a high current arc is directly…”
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Investigation of a short argon arc with hot anode. Part I: numerical simulations of non-equilibrium effects in the near-electrode regions by Khrabry, A, Kaganovich, I, Nemchinsky, V, Khodak, A

“…Phys. Plasmas 25, 013521 (2018) Atmospheric pressure arcs have recently found application in the production of nanoparticles. Distinguishing features of such…”
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Investigation of the Short Argon Arc with Hot Anode, Part II: Analytical Model by Khrabry, A, Kaganovich, I. D, Nemchinsky, V, Khodak, A

“…Phys. Plasmas 25, 013522 (2018) Short atmospheric pressure argon arc is studied numerically and analytically. In a short arc with inter-electrode gap of…”
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