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|Title:||Influence of Venting Areas on the Air Blast Pressure Inside Tubular Structures Like Railway Carriages|
|Authors:||LARCHER Martin; CASADEI Folco; SOLOMOS George|
|Citation:||JOURNAL OF HAZARDOUS MATERIALS vol. 183 no. 1-3 p. 839-846|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|Abstract:||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.|
|JRC Directorate:||Space, Security and Migration|
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