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Nonlinear convective effects on moving boundary AC plasma arcs

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2 Author(s)
Han-Ming Wu ; Comput. Fluid Dynamics Lab., Texas Univ., Austin, TX, USA ; Carey, G.F.

The energy equation for an AC plasma arc is cast into a general form, requiring the specification of only two parameters. Based on previous work for a tube model, the AC arc problem with moving boundary is modeled using an adaptive time-step integration scheme. It is found that convection in lower-frequency plasma arcs plays a more important role than for high-frequency arcs. The power factor decreases more significantly for the low-frequency arcs because the convective effect makes the departure of the voltage wave from a sinusoidal wave more significant in this case

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Plasma Science, IEEE Transactions on  (Volume:20 ,  Issue: 6 )