Mixture Fraction Combustion Model for Fire Simulation Using CFD.
Mixture Fraction Combustion Model for Fire Simulation
Floyd, J. E.; Baum, H. R.; McGrattan, K. B.
Engineered Fire Protection Design...Applying Fire
Science to Fire Protection Problems, International
Conference. Proceedings. Co-organized by: Society of
Fire Protection Engieners (SFPE) and National Institute
of Standards and Technology (NIST). June 11-15, 2001,
San Francisco, CA, 279-290 pp, 2001.
fire protection; fire protection engineering;
computational fluid dynamics; simulation; equations;
pool fires; enclosures; mixture fraction; fire models;
The simulation of fires using computational fluid
dynamics (CFD) is challenging because it is difficult to
couple the combustion chemistry that occurs at very
small length scales with the resolvable hydrodynamic
field. While it is possible to create a combustion model
that tracks the significant species required to
calculate the heat release rate, it is too expensive to
construct a grid fine enough to resolve individual flame
sheets except in cases where the domain is very small. A
method, therefore, is needed to model the combustion
chemistry in a manner that can be used at the length
scales of the resolvable flow field.