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Cross Wind Effects On Fire Propagation Through Heterogeneous Media

Porterie, B., Morvan, D., Loraud, J.C. and Larini, M., 2000. Cross Wind Effects On Fire Propagation Through Heterogeneous Media. Fire Safety Science 6: 707-716. doi:10.3801/IAFSS.FSS.6-707


A two-phase formulation is used to study the cross wind effects on the propagation of a line fire through a fuel bed. Each phase is described by a set of time-dependent equations and the coupling between them is rendered through exchange terms of mass, momentum, and energy. Turbulence is approached by using a RNG (Renormalization Group) k – ? statistical model. The radiative transfer equation in the fuel bed is solved using the discrete ordinates method extended to a two-phase medium. Soot formation is considered. First-order kinetics is incorporated to describe pyrolysis and combustion processes. A finite-volume method including high-order upwind convective scheme and flux limiter strategy along with a projection method for the pressure velocity coupling is used; the effects of cross wind on the behavior of a line fire through a bed of pine needles are examined and compared to measurements.


fire dynamics, multiphase flow, heterogeneous media, wind-driven fire

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