An experimental and modeling study of fires in ventilated ducts; Part 1: Liquid fuels
- Univ. of the Witwatersrand, Johannesburg (South Africa). Dept. of Chemical Engineering
A theoretical model for fire propagation through a fuel-lined duct with a radially well-mixed axial flow is presented. The gas-phase is modeled as a steady-state process whereas the condensed-phase (fuel source) is taken to be the cause of transient fire propagation along the duct. Experiments were performed in a small-scale duct where fire propagation and gas temperature histories were acquired. Experimental results confirm hypotheses of pseudo-steady-state gas-phase processes. Theory and experiment display transient fire propagation for typical duct fire scenarios where initial fuel mass loading is constant with respect to duct length. The phenomena observed, as predicted by theory, is an initial jump'' of the fully developed combustion process followed by convergence to a steady-state constant fire propagation speed. The theory is in all important aspects able to quantitatively model the experimental results.
- OSTI ID:
- 5153162
- Journal Information:
- Combustion and Flame; (United States), Vol. 96:4; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
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