Structure and Behavior of Gasless Combustion Waves in Powders

The method of simulation of the structure of powder mixture, which allows calculating the samples with a relative density from 15% up to practically close packing, is described. The 3D model of discrete combustion wave in powder mixture, which uses the actual structure of the sample, is considered. The parametric investigations of combustion of powder mixture in the wide range of relative density and particle ignition temperature are carried out. The model predicts the steady-state combustion, oscillating combustion, and extinction depending on the parameters of powder mixture. The results of the simulation are compared with experimental data.

本文阐述了一种粉体混合物结构模拟方法，该方法可计算相对密度介于15%至近似密堆积范围的试样。文中研究了采用试样实际结构的粉体混合物离散燃烧波三维模型，并在较宽的相对密度与颗粒点火温度范围内开展了粉体混合物燃烧的参数化探究。该模型可依据粉体混合物的参数，预测稳态燃烧、振荡燃烧及熄火三种燃烧状态，并将模拟结果与实验数据进行对比验证。