Abstract

A physical and mathematical model of spark ignition and combustion of boron powder suspension in a propane–air mixture is presented. Dependences of the critical energy of spark ignition on the radius and mass concentration of particles and propane content in the boron gas suspension are obtained. Dependences between the steady flame propagation velocity in a boron powder suspension in a propane–air mixture on particle radius and particle mass concentration are obtained, and the propane content in a boron gas suspension is determined. Quantitative correspondence of the computational and theoretical values of the flame propagation velocity in a boron powder suspension in a propane–air mixture with known experimental data has been obtained.

中文翻译：

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丙烷-空气混合物中硼粉悬浮液火花点火临界条件和燃烧速率的研究

摘要

提出了丙烷-空气混合物中硼粉悬浮液火花点火和燃烧的物理和数学模型。获得了火花点火的临界能量与硼气悬浮液中颗粒的半径和质量浓度以及丙烷含量的关系。获得了丙烷-空气混合物中硼粉末悬浮液中的稳定火焰传播速度与粒子半径和粒子质量浓度之间的关系，并确定了硼气悬浮液中的丙烷含量。已经获得了丙烷-空气混合物中硼粉悬浮液中火焰传播速度的计算值和理论值与已知实验数据的定量对应关系。