Citation

Razus D, Oancea D, Chirila F, Ionescu NI. Fire Safety J. 2003; 38(2): 147-163.

Copyright

(Copyright © 2003, Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

Small scale experiments on explosion transmission through a narrow cylindrical tube (diameter: 3.0-8.3 mm) between two cylindrical vessels were performed, using a stoichiometric C3H6/air mixture at various initial pressures within the range 20-120 kPa. The successful explosion transmission between the linked vessels occurred above a critical initial pressure, which increases when the tube diameter decreases. The critical pressure of transmission measured for upward flame propagation is lower than the one for downward propagation, at each value of the tube diameter. Different patterns of pressure evolution were observed for upward and downward flame propagation. The influence of the tube diameter and initial pressure on the characteristic features of explosion evolution in each vessel (the peak pressures, the maximum rates of pressure rise and the time delay between ignition in the primary and secondary vessel) are discussed.