Numerical simulation of high-current vacuum arcs with an external axial magnetic field

Schade, E.; Shmelev, D. L.

doi:10.1109/tps.2003.818436

Cited by 198 publications

(133 citation statements)

References 23 publications

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“…Boundary condition of anode side for electron energy conservation equation is described by 11 2.5n e kv y T e + q ey = n e v y e · ͩ 2kT e e − sh ͪ.…”

Section: Boundary Conditions and Calculated Methodsmentioning

confidence: 99%

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Numerical simulation of high-current vacuum arc characteristics under combined action of axial magnetic field and external magnetic field from bus bar

et al. 2009

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In this paper, the two-dimensional high-current vacuum arc (HCVA) model under the combined action of axial magnetic field (AMF) and external magnetic field from bus bar (EMFBB) is established. Based on this model, the influence of AMF and EMFBB on HCVA characteristics can be simulated and analyzed. Simulation results show that the HCVA column will be deflected by the Lorentz force generated by EMFBB and higher arc current. Moreover, the deflection level will be increased with the increase in external EMFBB strength. For HCVA, due to the smaller axial velocity near cathode side, the deflection of plasma parameters (such as ion number density, ion temperature, electron temperature, plasma pressure, and so on) near cathode side is more significant than that near anode side. The current deflection near cathode side toward direction of Lorentz force is more significant than that near anode side.

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“…Boundary condition of anode side for electron energy conservation equation is described by 11 2.5n e kv y T e + q ey = n e v y e · ͩ 2kT e e − sh ͪ.…”

Section: Boundary Conditions and Calculated Methodsmentioning

confidence: 99%

“…About vacuum arc simulation, there are many simulation works, the typical works have been done by Keidar and co-workers, 9,10 Schade and co-workers, 11,12 and Wang et al 13,14 In Refs. 9 and 10, the diffuse arc and diffuse column arc under AMF are modeled and simulated.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of high-current vacuum arc characteristics under combined action of axial magnetic field and external magnetic field from bus bar

et al. 2009

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“…In this equation n e , u, D e , R e , µ e , and E represent number density, convection velocity of fluid, diffusion coefficient, reaction rate of electron production, electron mobility, and electric field, respectively. This equation is used by most researchers in plasma, as in [3,17].…”

Section: Physical Modelmentioning

confidence: 99%

“…The anode considered as a perfect sink for electrons [3]. A perfect sink is a boundary condition in which the total electron flux on the anode is equal to drift and thermal electron fluxes with no sources.…”

Section: Anode Boundary Conditionmentioning

confidence: 99%

Effect of transverse magnetic field on low pressure argon discharge

Hashemi¹,

Niayesh²,

Mohseni³

2016

Turk J Elec Eng & Comp Sci

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A numerical simulation was performed to investigate the effect of transverse magnetic fields on low pressure argon plasma. Discovering the variations in electric field, electric potential, power consumption in plasma, and dominant physical mechanisms after application of magnetic fields is the main output of this analysis. A simulation was performed using the finite element method. A 2-fluid model equipped with chemical reaction equations in argon plasma, heat transfer equation, and Poisson's equation was used to describe the plasma behavior. Two disk-shaped electrodes separated by 12 mm from each other were considered as a plasma chamber and an external transverse magnetic field applied. Simulation results show an upset in the electric field after application of a magnetic field. This perturbation is because of the change in particle velocities due to the magnetic field. Changes in electric potential distribution, power loss, and heat transfer procedure are the events described in this paper.

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“…In the recent computations, there were assumed more realistic boundary conditions for normal component of electron thermal flux and tangential electric field upon the PF electrodes [4]. The both physical conditions gave two coupled equations for the temperature and magnetic field gradients.…”

Section: Numerical Model and Computer Simulationsmentioning

confidence: 99%

Theoretical and experimental study of plasma dynamics in PF-1000 facility

et al. 2006

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The paper presents a physical model for numerical simulations, based on a set of the non-ideal MHD equations in the two-fluid approximation, which has been used for determination of the pinch evolution and its structure. To study the evolution of plasma within a PF-1000 discharge there was applied an optical frame camera with the exposure time of 1 ns. On the basis of plasma images and calculations it was possible to determine the dynamics of the plasma sheath (CS) evolution and plasma dimensions. The experimental observations within the large PF-1000 machine have been compared with numerical calculations of the plasma evolution, and a relatively good agreement has been obtained. : 52.30.Cv, 52.59.Hq PACS

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Numerical simulation of high-current vacuum arcs with an external axial magnetic field

Cited by 198 publications

References 23 publications

Numerical simulation of high-current vacuum arc characteristics under combined action of axial magnetic field and external magnetic field from bus bar

Numerical simulation of high-current vacuum arc characteristics under combined action of axial magnetic field and external magnetic field from bus bar

Effect of transverse magnetic field on low pressure argon discharge

Theoretical and experimental study of plasma dynamics in PF-1000 facility

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