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Thermal explosion model and calculation of sphere fireworks and crackers

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Abstract

In order to analyze thermal safety of fireworks and crackers, thermal explosion models of three kinds of sphere fireworks and crackers with different structures are achieved on the basis of thermal explosion theory, and thermal resistance of shell and effective Biot number are deduced as for boundary conditions. Two models are calculated with target-shooting method in Matlab program, and the rationality is proved through comparison of numerical solution and classical solution. Meanwhile, calculation steps are shown about a type of firework. The study has a great significance to thermal safety analysis of fireworks and crackers.

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Acknowledgements

We would like to express our gratitude to Guangwei Zhou for his enthusiastic help in this study.

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Authors and Affiliations

  1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China

    Haiying Liu, Xinming Qian, Zhiming Du, Ping Huang & Zhenyi Liu

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  1. Haiying Liu
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  2. Xinming Qian
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  3. Zhiming Du
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  4. Ping Huang
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  5. Zhenyi Liu
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Correspondence to Xinming Qian.

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Liu, H., Qian, X., Du, Z. et al. Thermal explosion model and calculation of sphere fireworks and crackers. J Therm Anal Calorim 110, 1029–1036 (2012). https://doi.org/10.1007/s10973-011-2087-3

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  • DOI: https://doi.org/10.1007/s10973-011-2087-3

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