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An asymptotic‐induced one‐dimensional model to describe fires in tunnels

We derive a simple one‐dimensional model for the description of fire events in long vehicle tunnels, which is based on appropriate low‐Mach number asymptotics as well as on averaging procedure along the cross‐section of a tunnel. Turbulent effects are modelled using a phenomenological model. Numerical simulations based on a standard finite‐difference method show the ability of the new model to describe fires in tunnels at least qualitatively. Copyright © 2002 John Wiley & Sons, Ltd.