中文摘要：

为深入研究镁金属微粒的燃烧特性,基于Arrhenius定律,建立了镁颗粒非快速反应速率的一维球对称准稳态燃烧模型。模拟了直径为120mm的镁颗粒在大气环境中的燃烧过程。获得了燃烧场温度、反应物组分分布以及颗粒燃烧反应时间。结果表明：采用非快速燃烧反应模型计算得到的反应区最高温度为3568K,镁颗粒完全燃烧时间为21.9ms。这与文献实验值吻合较好。反应物组分氧气和镁蒸气可扩散到反应区外部,与镁颗粒燃烧中止实验后观察到的氧原子存在于未燃镁金属中的现象定性吻合,表明所建立的非快速燃烧反应模型比传统快速反应燃烧模型更能够准确描述镁微粒燃烧的实际工况。

英文摘要：

To further study the combustion characteristics of magnesium metal particles,based on the Arrhenius law,a one-dimensional spherical symmetric quasi-steady combustion model of limit reaction rate of magnesium particle was established.The combustion process of a magnesium particle with a diameter of 120 m was simulated in the atmospheric environment.The combustion field temperature distribution,composition distribution of reactants and combustion time of particle were obtained.Results show that the highest temperature obtained by the limit-rate combustion model in the reaction zone is 3568 K,and the combustion time of magnesium particle is 21.9 ms.The calculated results agree well with the experimental in literatures.Reactant of oxygen and magnesium vapor can spread to the outside of the reaction zone,which is qualitatively in accordance with the experimental phenomenon that oxygen atoms are detected in the quenched magnesium particle,indicating that the limit-rate combustion model can describe more precisely the actual condition of magnesium particle combustion than traditional fast-rate combustion model.