The effects of lntcr-ckxttxxk insertion on the performance of a hollow--electrode plasma torch have been investigated by numerical analysis.Simulation results revealed that when inter-dcctrodes arc inserted,the arc vo...The effects of lntcr-ckxttxxk insertion on the performance of a hollow--electrode plasma torch have been investigated by numerical analysis.Simulation results revealed that when inter-dcctrodes arc inserted,the arc voltages and plasma powers increase due to the increase in the arc length.In addition,it was predicted that thermal efficiency can be improved with the increase in plasma power by injecting plasma gases through the gaps between inter-electrodes.These unique effects of inter-electrode insertion arc a result of the plasma temperatures adjusting themselves to increase arc voltages when the arc column is contracted radially by increasing gas-flow rate or decreasing inter-electrcxk diameter.展开更多
文摘The effects of lntcr-ckxttxxk insertion on the performance of a hollow--electrode plasma torch have been investigated by numerical analysis.Simulation results revealed that when inter-dcctrodes arc inserted,the arc voltages and plasma powers increase due to the increase in the arc length.In addition,it was predicted that thermal efficiency can be improved with the increase in plasma power by injecting plasma gases through the gaps between inter-electrodes.These unique effects of inter-electrode insertion arc a result of the plasma temperatures adjusting themselves to increase arc voltages when the arc column is contracted radially by increasing gas-flow rate or decreasing inter-electrcxk diameter.
