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H2-O2/Air直接起爆形成爆轰临界能量的预测模型

DOI: 10.11858/gywlxb.2013.05.010, PP. 719-724

Keywords: 爆轰,直接起爆,临界能量,预测模型

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Abstract:

基于活塞做功模型,利用H2-O2/Air混合物爆轰临界管径和胞格尺寸,对直接起爆的临界能量进行预测,得出的预测结果和实验值吻合较好,可有效地预测H2-O2/Air混合物的临界起爆能量。基于预测模型得出在相同状态下,H2-Air混合物的临界起爆能量显著大于H2-O2混合物。进一步开展了ZND诱导区长度的研究,计算结果清晰地表明:在相同条件下,H2-Air混合物的诱导区长度明显大于H2-O2混合物,由于临界起爆能量与诱导区的长度通常为三次方的关系,因此导致前者的临界起爆能量大于后者。此结论与活塞做功模型得出的两者临界起爆能量的规律相符。

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