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Dust Particle Charge-up in a Corona Discharge

April 18th, 2018 dust-particle-chargeup-plasma-corona

This example demonstrates charge-up of initially charge-free dust particles as they move through a pin-corona plasma. Two sets of particles move through the corona with different initial velocities. The dust particles are subject to Lorentz forcing in the electric field and their resulting trajectories are compared. The macroscopic particle dynamics is modeled in VizGrain and coupled to a background plasma solution modeled in VizGlow. The 2D planar pin geometry and mesh is shown in Figure […]


DC Non-Transferred Plasma Torch

October 1st, 2017 plasma-torch-simulation-vizglow

VizSpark is used to model a non-transferred direct current plasma torch in pure argon gas assuming axi-symmetry along the central axis.  A steady state thermal plasma with temperatures from 15-20,000 Kelvin forms a supersonic, under expanded jet in the ambient region with visible Mach diamonds. Plasma torches are devices that produce a steady thermal plasma jet.  There are many applications for plasma torches including arc cutting, wielding, plasma spraying and waste treatment. A plasma torch […]