建立了CH4和空气的燃烧模型,计算并分析了在气体放电产生不同量的非平衡等离子体的情况下,电离产生的主要活性粒子(O和H)和活性基(OH)对燃烧温度及燃烧室出口流场的影响。计算结果表明等离子体助燃可以明显提高燃烧温度,改善燃烧室出口的温度场和速度场,并且能够提高燃烧效率,降低污染物排放。
The combustion model of methane and air was established. The flaming temperature and flow field of combustion outlet influenced by excited atoms (O and H) and active radical (OH) produced by gas discharge were calculated and analyzed. The calculative result of the model shows that plasma assisted combustion can greatly enhance flaming temperature, meliorate the temperature distributions and velocity distributions of the surface of outlet, increase combustion efficiency and decrease the discharge of pollutant.