The on-way peak overpressure and flame propagation speed of gas deflagration in the tube with obstacles are important data for process safety. Based on carbon monoxide deflagration experiments, the paper presents a multi-zone integration model for calculation of on-way peak overpressure, in which the tube with obstacles is considered as a series of venting explosion enclosures which link each others. The analysis of experimental data indicates that the on-way peak overpressure of gas deflagration can be correlated as an empirical formula with equivalence ratio of carbon monoxide oxidation, expansion ratio, flame path length, etc., and that the on-way peak overpressure exhibits a linear relationship with turbulence factor and flame propagation speed. An empirical formula of flame propagation speed is given.
- flame propagation speed
- multi-zone integration model
- peak overpressure
Luo, J., Wei, X-L., Li, S., Yu, L., Zhang, Y., Li, T., & Li, B. (2010). Study on peak overpressure and flame propagation speed of gas deflagration in the tube with obstacles. Science China Technological Sciences, 53(7), 1847-1854. https://doi.org/10.1007/s11431-010-3174-6