Influence of Venting Areas on the Air Blast Pressure Inside Tubular Structures Like Railway Carriages
In case of a terrorist bomb attack the influence and efficiency of venting areas in tubular structures like train carriages is of interest. The pressure-time function of an air blast wave resulting from a solid charge is first compared to that of a gas or dust explosion and the capability of a venting structure to fly away is assessed. Several calculations using fluid-structure interaction are performed. These show that after a certain distance from the explosion, the air blast wave inside a tubular structure becomes one-dimensional, and that the influence of venting areas parallel to the wave propagation direction is small. The pressure peak and the impulse at certain points in a tubular structure are compared for several opening sizes. The overall influence of venting devices is small. Their usefulness in mitigating internal explosion effects in trains is discussed.
LARCHER Martin;
CASADEI Folco;
SOLOMOS George;
2010-09-21
ELSEVIER SCIENCE BV
JRC57525
0304-3894,
www.elsevier.com/locate/jhazmat,
https://publications.jrc.ec.europa.eu/repository/handle/JRC57525,
10.1016/j.jhazmat.2010.07.103,
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