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Measurements of Heat Release Rate and Vorticity Distributions in a Buoyant Diffusion Flame for the Calculation of Fire Induced Flows.


pdf icon Measurements of Heat Release Rate and Vorticity Distributions in a Buoyant Diffusion Flame for the Calculation of Fire Induced Flows. (215 K)
Gore, J. P.; Zhou, X. C.

NISTIR 6242; October 1998.

National Institute of Standards and Technology. Annual Conference on Fire Research: Book of Abstracts. November 2-5, 1998, Gaithersburg, MD, Beall, K. A., Editor(s), 61-62 pp, 1998.

Sponsor:

National Institute of Standards and Technology, Gaithersburg, MD

Available from:

National Technical Information Service
Order number: PB99-102519

Keywords:

fire research; fire science; fire suppression; heat release; vorticity; diffusion flames; flow fields; velocity measurement

Abstract:

Fire induced flows are of importance in a variety of fire phenomena including entrainment, pollutant formation, fire size and fire spread. A receipe pioneered by Baum and McCaffrey at NIST utilizes the distributions of heat release rates and vorticity in the fire in the evaluation of the fire induced flow field. In this work, we utilize mean mixture fraction measurements and mean velocity measurements in the fire to deduce these distributions. Using these distributions in conjunction with the methodology, we have calculated the flow field of a 7.1 cm natural gas fueled buoyant flame. The results are in excellent agreement with experimental data.