![]() As the flow rate increases, the maximum velocity increases, while the temperature and current density decreases. As the arc gradually stabilizes to form an arc column, the maximum moves to the center of the arc column and gradually decreases along the radial direction. ![]() When arc breakdown, the arc temperature and current density have the maximum value at the electrode. The flow rate has a significant effect on the arc characteristic distribution, and the gas blowing makes the arc discharge appear “arc shape”. The results show that the gliding arc discharge presents a cyclic process of arc breakdown, elongation, disappearance, and re-breakdown. The effects of flow rate, electrode throat and voltage on the gliding arc velocity, temperature and current density distribution were studied. ![]() In this paper, a mathematical model of DC gliding arc plasma was established based on magneto-hydrodynamic theory (MHD), and the finite element software COMSOL was used to solve the coupling process of electromagnetic field, temperature field and velocity field.
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