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等离子体助燃过程是一个非平衡的,瞬时的,极不均匀的物理化学过程,活性粒子在等离子体助燃计算中是一个关键难题。文章建立H2/Air燃烧的化学动力学模型,计算与分析了在非平衡等离子体条件下,气体放电产生的活性粒子(O,H)和活性基(OH)在不同初始温度下对燃烧过程中参与燃烧的组分以及温度和压力的影响,为航空发动机燃烧室等离子体助燃实验研究和实际应用提供理论依据。数学模型的计算结果表明等离子体助燃可以提高反应效率,缩短延迟时间,增加燃烧温度,火焰传播速率,强烈影响H2/Air混合物燃烧效果。
The plasma combustion process is an unbalanced, transient and highly inhomogeneous physico-chemical process, and the active particles are a key problem in the plasma combustion calculation. In this paper, a chemical kinetic model of H2 / Air combustion is established, and the effects of gas discharge on active particles (O, H) and active radicals (OH) at different initial temperatures under non-equilibrium plasma conditions Participate in the combustion of the components and the impact of temperature and pressure to provide a theoretical basis for aircraft combustion chamber plasma combustion research and practical application. The results of mathematical model show that plasma combustion can improve the reaction efficiency, shorten the delay time, increase the combustion temperature and flame propagation rate and strongly influence the combustion effect of H2 / Air mixture.