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CFAST: The Consolidated Model of Fire Growth and Smoke Transport.


pdf icon CFAST: The Consolidated Model of Fire Growth and Smoke Transport. (1987 K)
Peacock, R. D.; Forney, G. P.; Reneke, P. A.; Portier, R. W.; Jones, W. W.

NIST TN 1299; NIST Technical Note 1299; 246 p. February 1993.
Order number: PB93-174902

Keywords:

CFAST; compartment fires; fire growth; predictive models; mathematical models; numerical models; room fires; toxicity

Abstract:

(NOTE: If a copy of the software is needed, contact Dr. Walter W. Jones, NIST, Bldg. 224, Rm. A249, Gaithersburg, MD 20899 Tel: 301/975-6887 or e-mail wwj@enh.nist.gov.) CFAST is a zone model capable of predicting the environment in a multi-compartment structure subjected to a fire. It calculates the time evolving distribution of smoke and fire gases and the temperature throughout a building during a user-specified fire. This report describes the equations which constitute the model, the physical basis for these equations, data which are used by the model, and details of the operation of the computer program implementing the model. A set of comparisons between the model and a range of real-scale fire experiments is presented. In general, the CFAST model compares favorably with the experiments examined in this paper. Although differences between the model and the experiments were clear, they can be explained by limitations of the model and of the experiments. This paper documents the equations which are used in CFAST and how they are implemented. The means by which one can add new phenomena is detailed, as are the variables and structure of the model. NOTE: If a copy of the software is needed, contact Dr. Walter W. Jones, NIST, Bldg. 224, Rm. A249, Gaithersburg, MD 20899 Tel: 301/975-6887 or e-mail wwj@enh.nist.gov.