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| Taking into account the properties of the arc plasma and the electromagnetic, heat and radiative phenomena, commercial computational fluid dynamics software PHOENICS has been adapted and modified to develop the three-dimensional magneto-hydrodynamic (MHD) model of arc in a low voltage circuit breaker. The effects of the arc ignition location, venting size and gassing material on arc behavior are investigated. The analysis of the results show that the arc velocity accelerates with the increase of the distance between arc ignition location and of the venting size, and the existence of the gassing material benefits to improve the arc voltage and reduce the arc temperature. |
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| Keywords:arc model, venting, gassing material |
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