Journal of Failure Analysis and Prevention

, Volume 18, Issue 3, pp 601–606 | Cite as

Research on the Distribution of Unconfined Gas Cloud Explosion Field

  • Jiahong Jiang
  • Jin Fan
  • Bo Yu
  • Jianguo Ding
Technical Article---Peer-Reviewed


To research the distribution of unconfined gas cloud explosion overpressure field and impulse field, build domed finite element model of combustible gas, use computational fluid dynamics, and get the numerical simulation of the methane–air gas explosion. The numerical calculation of overpressure fits the experimental result. The impulse field depends on the overpressure and time; the impulse at the gas cloud boundary is maximum. And the formulas of overpressure and impulse were calculated by data fitting.


Numerical simulation Overpressure field Impulse field Data fitting 


  1. 1.
    D. Yun, D. Dayu, Numerical calculation of blast waves from non-ideal explosion sources (Chinese). Explos. shock waves 15(4), 289–299 (1995)Google Scholar
  2. 2.
    B. Das, M. Weinberg, Improving flammable mass estimation for vapor cloud explosion modeling in an offshore QRA. Saf. Sci. 50, 1218–1227 (2012)CrossRefGoogle Scholar
  3. 3.
    B.J. Lowesmith, G. Hankinson, D.M. Johnson, Vapour cloud explosions in a long congested region involving methane/hydrogen mixtures. Process Saf. Environ. Prot. 89, 234–247 (2011)CrossRefGoogle Scholar
  4. 4.
    Y. Yi, H. Xueqiu, Effect of meshy obstacle on methane gas explosion. Proc. Eng. 26, 70–74 (2011)CrossRefGoogle Scholar
  5. 5.
    A. Qiao, S. Zhang, Advanced CFD modeling on vapor dispersion and vapor cloud explosion. J. Loss Prev. Process Ind. 23, 843–848 (2010)CrossRefGoogle Scholar
  6. 6.
    S.M. Tauseef, D. Rashtchian et al., A method for simulation of vapor cloud explosions based on computational fluid dynamics (CFD). J. Loss Prev. Process Ind. 24, 638–647 (2011)CrossRefGoogle Scholar
  7. 7.
    P. Lei, Z. Qi, Study into injury effect of thermal radiation from unconfined vapor cloud explosion (Chinese). Trans. Beijing Inst. Technol. 30(10), 1147–1150 (2010)Google Scholar
  8. 8.
    L. Zhenghong, Z. Xiaoli, Experimental investigation into deflagration of small-volume combustible vapour clouds (Chinese). J. Zhejiang Univ. 36(1), 106–108 (2002)Google Scholar
  9. 9.
    M. Bi, S. Wang, X. Ding, Experimental study on explosion pressures of unrestricted gas cloud explosions (Chinese). J. Chem. Ind. Eng. 52(1), 68–71 (2001)Google Scholar

Copyright information

© ASM International 2018

Authors and Affiliations

  1. 1.Department of Civil EngineeringNanjing University of Science and TechnologyNanjingChina

Personalised recommendations