Large Eddy Simulations of Smoke Movement.
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.
