- Author
-
McGrattan, K. B.
|
Baum, H. R.
|
Rehm, R. G.
- Title
- Large Eddy Simulations of Smoke Movement.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
-
Fire Safety Journal,
Vol. 30,
No. 2,
161-178,
March 1998
- Keywords
-
smoke movement
|
field models
|
fire plumes
|
simulation
- Identifiers
- hydrodynamic model; thermal elements
- 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.