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为满足大气压气体放电热等离子体先进材料加工的要求,研究了当等离子体发生器出口处存在旋流流动时,旋流效应对有反向载气注入条件下等离子体反应器内传热与流动特性的影响。在所研究的参数范围内的计算结果表明:旋流对等离子体的轴向运动有抑制作用,且有助于强化等离子体射流与反向载气的混合,从而影响反应器内的传热与流动特性以及发生器出口与反向载气喷管出口之间所形成的滞止平面的位置;而且随着旋流数的增加,旋流对等离子体轴向运动的抑制作用也会增强。
In order to meet the requirements of processing advanced materials for atmospheric plasma discharge thermal plasma, the effect of cyclone on the heat transfer and flow in a plasma reactor with reverse carrier gas injection Effect of characteristics. The calculated results in the range of parameters studied show that the swirl flow can restrain the axial movement of the plasma and help to strengthen the mixing of the plasma jet with the reverse carrier gas and thus affect the heat transfer in the reactor Flow characteristics and the stagnation plane formed between the outlet of the generator and the outlet of the reverse carrier gas nozzle. With the increase of the number of swirl, the inhibition of the axial movement of the plasma by the swirl flow will also be enhanced.