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Dynamics of Water Droplets in a Counterflow Field and Its Effect on Flame Extinction.


pdf icon Dynamics of Water Droplets in a Counterflow Field and Its Effect on Flame Extinction. (1971 K)
Lentati, A. M.; Chelliah, H. K.

NISTIR 5904; October 1996.

National Institute of Standards and Technology. Annual Conference on Fire Research: Book of Abstracts. NISTIR 5904. October 28-31, 1996, Gaithersburg, MD, 3-4 pp, 1996 AND Chemical and Physical Processes in Combustion. Fall Technical Meeting, 1996. Proceedings. Eastern States Section/Combustion Institute. December 9-11, 1996, Hilton Head, SC, 281-284 pp, 1996, 1998.

Combustion and Flame, Vol. 115, No. 1/2, 158-179, October 1998.

Sponsor:

National Institute of Standards and Technology, Gaithersburg, MD

Available from:

National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161.
Telephone: 1-800-553-6847 or 703-605-6000;
Fax: 703-605-6900.
Website: http://www.ntis.gov
Order number: PB97-153514

Keywords:

fire research; fire science; water; droplets; flame extinguishment

Abstract:

Efficient suppression of flames by condensed-phase agents (e.g., dry powder, water, etc.) requires a basic understanding of the rate-controlling physical, thermal and chemical processes. A steady, laminar, non-premixed flame, established within the mixing layer of a counterflow of methane and air, is used here to numerically determine the rate controlling processes associated with flame extinction by fine water droplets. Although experiments are planned to validate the model, only the numerical results with water droplets introduced with the air stream are reported here.