基于相关领域的研究成果,在大量实验研究结果的基础上提出了一个无气燃烧的微观非均质的介质模型,并讨论SHS非平衡和多过程互反馈的基本燃烧动力学方程.采用数值分析的方法研究了Ti-C-Fe体系的SHS快速燃烧的热动力学过程,合理地解释了实验中观测到的多种燃烧现象.研究结果表明:压坯相对密度对燃烧特征存在着双重的影响,压坯相对密度的增加有助于反应速度的加快,但同时也导致热量传导的加快.因而对一定的体系而言,压坯相对密度存在一个最佳取值范围.反应组分颗粒的增大会使体系反应速度减缓,从而导致体系燃烧温度和速度降低,与相关实验室结果基本一致.上述理论模型的建立为进一步深入研究SHS过程的基本规律提供了基础.
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