NIST Time|NIST Home|About NIST|Contact NIST

HomeAll Years:AuthorKeywordTitle2005-2010:AuthorKeywordTitle

Large Eddy Simulations of Smoke Movement.


pdf icon Large Eddy Simulations of Smoke Movement. (1176 K)
McGrattan, K. B.; Baum, H. R.; Rehm, R. G.

Fire Safety Journal, Vol. 30, No. 2, 161-178, March 1998.

Keywords:

smoke movement; field models; fire plumes; simulation

Abstract:

An approach to field modelling of fire phenomena in enclosures is presented. The conservation equations of mass, momentun and energy are calculated with sufficient temporal and spatial resolution to yield a truly three-dimensional, dynamic picture of the fire plume and its surroundings. The large scale eddies are simulated directly and sub-grid scale motion is represented by a constant eddy viscosity. Efficient flow solving techniques make it possible to simulate fire scenarios using computational grids in excess of a million cells on modern workstations. Several examples of the methodology are presented.