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Numerical modelling of electrode plasma generation

Numerical modelling of electrode plasma generation
Numerical modelling of electrode plasma generation
Arc erosion due to material transfer in the plasma developed between low voltage switching devices during opening and closure is one of the major mechanisms leading to contact failure. Electrical contact failure can have relatively catastrophic consequences.

This work is primarily concerned with the arc phenomena associated with low voltage switching devices during the breaking of two current carrying electrical contacts. It is assumed that the electrode plasma is initiated by the application of electric potential between electrodes which gives rise to a strong electric field which draws electrons from the cathode. This then generates a non-linear responses in the gas, involving fluid and reactive effects. A numerical solution to the Navier-Stokes equations in a multi-species, nonequilibrium reacting, viscous nitrogen plasma flow under the electrical arcing condition is presented here. Here, a convection-diffusion-ionization operator splitting scheme is adopted. The Navier-Stokes equations are divided into separate partial differential equations that describe respectively the convective, diffusive, chemical and electromagnetic effects separately.

A further geometric operator splitting is applied, in which the various part of the equations are reduced to a sequence of one-dimensional problems along grid lines which are relatively easy to solve conceptually. This has the advantage of maintaining sharp resolution of discontinuities and monotonicity in the solutions
navier-stokes equations, arcs (electric), electrical contacts, plasma flow, plasma switches, plasma transport processes, wear
0780359828
164
IEEE
Ng, W.L.
ea7850e7-1fee-4651-8b1d-ebd21d47ec2e
Tutty, O.R.
c9ba0b98-4790-4a72-b5b7-09c1c6e20375
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Ng, W.L.
ea7850e7-1fee-4651-8b1d-ebd21d47ec2e
Tutty, O.R.
c9ba0b98-4790-4a72-b5b7-09c1c6e20375
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770

Ng, W.L., Tutty, O.R. and McBride, J.W. (2000) Numerical modelling of electrode plasma generation. In The 27th IEEE International Conference on Plasma Science. IEEE. p. 164 . (doi:10.1109/PLASMA.2000.854863).

Record type: Conference or Workshop Item (Paper)

Abstract

Arc erosion due to material transfer in the plasma developed between low voltage switching devices during opening and closure is one of the major mechanisms leading to contact failure. Electrical contact failure can have relatively catastrophic consequences.

This work is primarily concerned with the arc phenomena associated with low voltage switching devices during the breaking of two current carrying electrical contacts. It is assumed that the electrode plasma is initiated by the application of electric potential between electrodes which gives rise to a strong electric field which draws electrons from the cathode. This then generates a non-linear responses in the gas, involving fluid and reactive effects. A numerical solution to the Navier-Stokes equations in a multi-species, nonequilibrium reacting, viscous nitrogen plasma flow under the electrical arcing condition is presented here. Here, a convection-diffusion-ionization operator splitting scheme is adopted. The Navier-Stokes equations are divided into separate partial differential equations that describe respectively the convective, diffusive, chemical and electromagnetic effects separately.

A further geometric operator splitting is applied, in which the various part of the equations are reduced to a sequence of one-dimensional problems along grid lines which are relatively easy to solve conceptually. This has the advantage of maintaining sharp resolution of discontinuities and monotonicity in the solutions

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More information

Published date: 4 June 2000
Venue - Dates: conference; us; 2000-06-04, New Orleans, United States, 2000-06-04
Keywords: navier-stokes equations, arcs (electric), electrical contacts, plasma flow, plasma switches, plasma transport processes, wear
Organisations: Aerodynamics & Flight Mechanics

Identifiers

Local EPrints ID: 155865
URI: http://eprints.soton.ac.uk/id/eprint/155865
ISBN: 0780359828
PURE UUID: 238bd189-14c9-41ed-aa1f-9eb9b1dc38f8
ORCID for J.W. McBride: ORCID iD orcid.org/0000-0002-3024-0326

Catalogue record

Date deposited: 26 Jul 2010 09:15
Last modified: 14 Mar 2024 02:33

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Contributors

Author: W.L. Ng
Author: O.R. Tutty
Author: J.W. McBride ORCID iD

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