Fire and Smoke Spread in a Corridor:The Pre-Heat Period, 2-D Parabolic Flows.

摘要

In this report on corridor fires a numerical model is developed for the prediction of two dimensional unsteady buoyancy driven flows. The motion is assumed to be parabolic in the downstream coordinate. The model incorporates the balance equations of mass,momentum,and energy together with the equation of state of a perfect gas. Physical variables,velocity and pressure,are used rather than stream function-vorticity variables. The model allows for non-uniform transport coefficients,turbulence,and one dimensional radiative transport. The numerical model is capable of predicting temperature and velocity profiles for the pre-heat period in a corridor provided there is strong enough through flow so that no recirculation occurs.