Experimental investigation on the near detonation limits of propane/hydrogen/oxygen mixtures in a rectangular tube
Experimental investigation on the near detonation limits of propane/hydrogen/oxygen mixtures in a rectangular tube
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矩形管内丙烷/氢气/氧气混合物的近爆轰极限实验研究
DOI：
10.1016/j.ijhydene.2019.10.249
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发表时间：
2020
影响因子：
7.2
通讯作者：
Cao Wei-guo
中科院分区：
文献类型：
--
作者：
Zhang Yun;Cheng Yang-fan;Su Jian;Wang Wen-tao;Han Ti-fei;Tan Ying-xin;Cao Wei-guo
本文对丙烷-氢-氧混合物的近爆轰极限进行了实验研究。三种混合物（即，8H 2-C3 H8 - 9 O2、4 H2-C3 H8 - 7 O2和12 H2-C3 H8 - 11 O2）在矩形管（52 mm × 32 mm）中进行测试。在管壁上安装等间距的光电二极管，测量爆轰波的到达时间，由此确定爆速。将烟熏箔插入管中以获得爆震单元图案。结果表明，在爆轰极限范围内，爆轰波能够以稳定的速度传播。随着初始压力的降低，爆速逐渐降低。随后，当初始压力低于临界压力时，爆震失败。8H 2-C3 H8 - 9 O2、4 H2-C3 H8 - 7 O2和12 H2-C3 H8 - 11 O2的临界压力分别为4kPa、5 kPa和6 kPa，相应的爆速差分别为10%、9%和10%。胞格爆轰结构表明，随着氢气浓度的降低，胞格尺寸逐渐减小，在爆轰极限附近胞格结构变得非常不规则。
In this paper, an experimental study on the near detonation limits for propane-hydrogen-oxygen is performed. Three mixtures (i.e., 8H2–C3H8–9O2, 4H2–C3H8–7O2and 12H2–C3H8–11O2) are tested in a rectangular tube (52 mm × 32 mm). Photodiodes with regular intervals are mounted on the tube wall to measure the time of arrival of detonation waves, from which the detonation velocity is determined. Smoked foils are inserted into the tube to obtain the detonation cell pattern. The results indicate that well within the detonation limits, the detonation can propagate at a steady velocity. By reducing the initial pressure, the detonation velocity decreases gradually. Subsequently, the detonation fails as the initial pressure is below a critical pressure. The critical pressures for 8H2–C3H8–9O2, 4H2–C3H8–7O2and 12H2–C3H8–11O2mixtures are 4 kPa, 5 kPa and 6 kPa, and the corresponding detonation velocity deficits are 10%, 9%, 10%, respectively. The cellular detonation structures show that the cell size decreases with the decrease of the hydrogen concentration, and the cell structures are very irregular near the detonation limits.
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
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作者：
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