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Simulation of Smoke Transport and Coagulation for a Standard Test Fire.


pdf icon Simulation of Smoke Transport and Coagulation for a Standard Test Fire. (123 K)
Farouk, B.; Mulholland, G. W.; McGrattan, K. B.

NIST SP 965; February 2001.

International Conference on Automatic Fire Detection "AUBE '01", 12th. Proceedings. National Institute of Standards and Technology. March 25-28, 2001, Gaithersburg, MD, Beall, K.; Grosshandler, W. L.; Luck, H., Editor(s)(s), 482-493 pp, 2001.

Keywords:

fire detection; fire detection systems; smoke transport; test fires; air movement; temperature field; enclosures; size distribution; combustion models

Abstract:

Large eddy simulations of a standard test fire (EN 54-9, TF4) were carried out. The development of the large-scale air movements and temperature fields generated by the enclosure fires are calculated. In additron, the smoke transport and time evolution of the size distributton of smoke aerosol due to coagulation arc also predicted. The mass and number densities of smoke particles arc computed at a detector location, as speci tied in the standard test fire procedure. Recent measurements of the number and mass densities of smoke using electrical aerosol spectrnmctry compared favorably with the model predictions.