Entrainment in the Near and Far Field of Fire Plumes
作者:
B. M. Cetegen,
E. E. Zukoski,
T. Kubota,
期刊:
Combustion Science and Technology
(Taylor Available online 1984)
卷期:
Volume 39,
issue 1-6
页码: 305-331
ISSN:0010-2202
年代: 1984
DOI:10.1080/00102208408923794
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
This paper describes entrainment measurements made in fire plumes with a new technique. Measurements were in plumes rising from natural gas diffusion flames stabilized on 0.10, 0.19 and 0.50 m diameter burners and the heat release rates ranged from 10 to 200 kW. The heights examined ranged from elevations starting very close to the burner surface to distances about five times the average flame heights. Experiments indicate the presence of three regions: a region close to the burner surface where plume entrainment rates are independent of the fuel flow (or heat release) rates; a far field region above the flame top, where a simple point source model correlates the data reasonably well; and an intermediate region where entrainment appears to be similar to that of a turbulent plume.
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