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Method of Predicting Smoke Movement in Atria With Application to Smoke Management.


pdf icon Method of Predicting Smoke Movement in Atria With Application to Smoke Management. (3509 K)
Klote, J. H.

NISTIR 5516; 94 p. November 1994.

Available from:

National Technical Information Service
Order number: PB95-154746

Keywords:

smoke movement; atria; building fires; fire models; fire plumes; fire research; plumes; scale models; smoke control

Abstract:

In recent years, building with atria has become commonplace. Other spaces involving enclosed shopping malls, arcades, sports arenas and airplane hangers also have large volumes, and the methods of this paper are also applicable to these spaces. This paper presents information that can be used for predicting smoke movement for design of atrium smoke management systems. The basic approach used in many codes consists of a collection of algebraic equations for design analysis. This approach and the physical concepts behind it are discussed including atrium smoke management system limitations. For applications for which the basic approach is inappropriate, computational fluid dynamics (CFD) and physical modeling can be applied. Research is needed concerning (1) the depth of smoke layer required to prevent atrium exhaust from pulling air from the lower layer and (2) the use of airflow for smoke control between the atrium and spaces opening onto the atrium.