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Improvement in Predicting Smoke Movement in Compartmented Structures.


pdf icon Improvement in Predicting Smoke Movement in Compartmented Structures. (1713 K)
Jones, W. W.; Forney, G. P.

Fire Safety Journal, Vol. 21, No. 4, 269-297, 1993.

Sponsor:

Office of Naval Technology, Washington, DC

Keywords:

smoke movement; structures; fire growth; smoke transport; predictive models; toxic gases; compartments; zone models; equations; buoyant flow

Abstract:

This paper describes improvements which have been made in the CFAST model of fire growth and smoke transport for compartmented structures. In particular, we are interested in the ability to model the movement of toxic gases from the room of origin of a fire to a distant compartment. The newest phenomena in the model are vertical flow and mechanical ventilation. Finally, we have improved the radiation transport scheme which affects energy distribution, and therefore the buoyancy forces. These are very important in actual situations relevant to fire growth and smoke propagation, as is demonstrated.