A theoretical analysis of fire development and flame spread in underground trains

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Date

2009

Author

Musluoğlu, Eren

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The fire development and flame spread in the railway carriages are investigated by performing a set of simulations using a widely accepted simulation software called ‘Fire Dynamics Simulator’. Two different rolling stock models; representing a train made up of physically separated carriages, and a 4-car train with open wide gangways; have been built to examine the effects of train geometry on fire development and smoke spread within the trains. The simulations incorporate two different ignition sources; a small size arson fire, and a severe baggage fire incident. The simulations have been performed incorporating variations of parameters including tunnel geometry, ventilation and evacuation strategies, and combustible material properties. The predictions of flame spread within the rolling stock and values of the peak heat release rates are reported for the simulated incident cases. In addition, for a set of base cases the onboard conditions are discussed and compared against the tenability criteria given by the international standards. The predictions of heat release rate and the onboard conditions from the Fire Dynamics Simulator case studies have been checked against the empirical methods such as Duggan’s method and other simulation softwares such as CFAST program.

Subject Keywords

Mechanical engineering., Fire prevention.

URI

http://etd.lib.metu.edu.tr/upload/12610860/index.pdf
https://hdl.handle.net/11511/18988

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

E. Musluoğlu, “A theoretical analysis of fire development and flame spread in underground trains,” Ph.D. - Doctoral Program, Middle East Technical University, 2009.