针对药室长度超过3m的长药室装药设计问题,设计了以电点火具为点火源的多点点火系统,在点传火模拟实验装置上进行了多点点火的实验研究.同时,建立了点传火模拟实验装置中多点点传火过程的数学物理模型,采用MacCormack差分格式进行了数值求解,得到了点传火模拟装置中传火管的压力分布、固相和气相速度以及空隙率等数值解,分析了多点点传火系统的点传火过程.计算结果与实验结果吻合,比较准确地描述了点传火过程,表明该数值模拟方法合理可行.%A multi-point ignition system with an electric igniter was designed and experimental investigations were carried out by using this analogue ignition device to solve the charge problems in the powder chambers with the over 3 m length. The corresponding mathematical and physical models were established to describe the multi-point ignition process in this analogue ignition device. The Mac-Cormack difference equation was used to obtain the numerical solutions as follows; The pressure distribution and void ratio and solid and gas velocities. And the multi-point ignition process was analyzed. The calculated results are consistent with the experimental ones and the algorithm is effective.
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