中文摘要：

基于三步的运动机制，一一个维，依赖、数字模型为闷烧的繁殖被介绍在的时间一水平地有纤维质的材料的填充床。运动过程包括热分解和燃料的氧化降级和字符的氧化。在固体和气体之间的热转移被考虑，并且散开系数与温度变化。放射的热转移被使用散开近似包括。气流速度和氧集中的效果在闷烧的速度和闷烧的平均最大的温度上被模仿燃料。结果显示传播率与增加气流速度，和入口空气速度线性地变化在最大的温度上有小效果。煤气的种类和稳固的作文的进化被预言。频率因素的效果(₁, A ₂ 和 ₃) 被分析。闷烧的传播率与增加 ₂( 燃料氧化) 增加的模拟表演，而是有 ₁( 燃料热分解) 和 ₃( 字符氧化) 的减少。

英文摘要：

Based on a three-step kinetic mechanism, a one-dimensional, time dependent, numerical model is presented for the smoldering propagation in a horizontally packed bed of cellulosic material. The kinetic processes include pyrolysis and oxidation degradation of fuel and oxidation of char. Heat transfer between solid and gas is taken into account, and the diffusion coefficient varies with the temperature. Radiative heat transfer is included by using the diffusion approximation. The effects of airflow velocity and oxygen concentration are simulated on the smoldering velocity and the averaged maximum temperature of smoldering fuel. The results indicate that the spread rate varies linearly with increasing airflow velocity, and the inlet air velocity has little effect on the maximum temperature. The evolutions of gas species and solid compositions are predicted. The effects of frequency factors （A1, A2 and A3） are analyzed. Simulations show that the smoldering spread rate increases with increasing A2 （fuel oxidation）, but decreases with A1 （fuel pyrolysis） and A3 （char oxidation）.