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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 42225 (08)
- University: Sharif University of Technology
- Department: Mechanical Engineering
- Advisor(s): Farhanieh, Bijan
- Abstract:
- Fire phenomenon and its hazards through urbun transportation systems like subway is a major debate in management of these territories. Recently, varios factors, such as great deal of passengers whom travel by these systems, financial damages and psychological disorders due to fire accidents resulte in noticeable investigation to prevent and reduce these subjects. In this research, simulating of railcar fire has been conducted to estimate the amount of heat release rate (HRR) and parameters which affect on it by modelling behavior of combustible materials inside railcar. As regards to materials which are available inside railcar that participate in fire, their behavior face to heat flux has been simulated individually and the accuracy of conclusion compared with data which has been obtainded from their cone calorimetry experements. In order to simulate fire within railcar, a model of railcar geometry and its surrounding space based on Froud number similarity has been created. Finally, the behavior of ignitable material collection in railcar fire process investigated by putting each combustible material in its special place such as chair, floor cover, roof,etc in both inside and outside of tunnel. There have been considered several scenarios such as emergency ventilation in order to take into account their effects on fire phenomenon in this research. Furthermore, Temperature and its distribution in gas phase has been conducted precisely
- Keywords:
- Railway Cars ; Fire Dynamic Simulator (FDS)Software ; Fire Accident ; Pyrolysis ; Calorimetry Experiment
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