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HMX粉尘云火焰传播规律研究

Fire Science and Technology(2020)

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Abstract
采用改进的可视化Hartmann装置,研究HMX粉尘云爆炸火焰传播规律,观察不同HMX粉尘云质量浓度及粒度对其粉尘云爆炸火焰传播速度及火焰传播高度的影响.结果表明:HMX粉尘质量浓度从74.1 g/m3变化为185.1 g/m3,火焰传播最大高度从29.97 cm增加为60.81 cm,最大速度从58.91 m/s增加为175 m/s;火焰波动幅度随质量浓度的增加而增大,同时,火焰波动出现的时间明显提前.HMX粉尘粒径从19.02μm增大为53.56μm时,火焰传播最大高度由55.45 cm降低为40.02 cm,最大火焰传播速度由181.93 m/s降低为121.28 m/s,火焰波动幅度显著降低,火焰波动出现的时间推迟.
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