Zhongguo Jianchuan Yanjiu (Jun 2024)

Experimental investigation of quasi-static pressure characteristics of the confined cabin in the water mist environment

  • Xiuyi XI,
  • Jun LI,
  • Ya ZHANG,
  • Zhiping WANG,
  • Wei CHEN,
  • Ying LI,
  • Xiaobin LI

DOI
https://doi.org/10.19693/j.issn.1673-3185.03527
Journal volume & issue
Vol. 19, no. 3
pp. 174 – 181

Abstract

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ObjectiveThis study focuses on the quasi-static pressure characteristics of a confined cabin in a water mist environment. MethodsFirst, on the basis of the theoretical model of quasi-static pressure in a confined cabin in adiabatic ideal gas, two new assumptions are added to establish a theoretical model of quasi-static pressure in a confined cabin in a water mist environment. Internal explosion experiments in a confined cabin with and without water mist are then performed with the charge as an independent variable, and the quasi-static pressure is measured and used to verify the mitigation effect of water mist on quasi-static pressure and obtain its empirical formula.Results Combined with the theoretical model and experimental data analysis, it is concluded that the ability of water mist to reduce quasi-static pressure increases with the increase in charge-volume ratio, but the increase rate gradually decreases. Both the theoretical formulas of the afterburning correction term and empirical formulas can be used to estimate the quasi-static pressure peak in the cabin.ConclusionsThe experimental results verify the mitigation effect of water mist on quasi-static pressure. The experimental data of this paper and others shows good agreement with the empirical formula of the quasi-static pressure peak of an internal explosion in a water mist environment, and can be used to estimate the quasi-static pressure peak.

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