Citation

Jiang H, Liu C, Huang L, Wu P, Deng T. China Saf. Sci. J. 2022; 32(1): 157-163.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.01.021

PMID

unavailable

Abstract

In order to explore impacts of different superfine water mist content on combustion characteristics of dual nozzle jet diffusion flame under cross-wind, flame geometry was recorded by using a high-speed camera, and impacts of superfine water mist content on geometry evolution, length, and blow-out limit of flame were analyzed for different nozzle spacing and cross-wind. Then, based on the current mathematical model, an empirical formula of flame stretching length variation which featured good correlation with experimental data of growth region was deduced. The results show that as mist flux under cross-wind increases, the color of dual nozzle flame changes from blue-yellow to orange-yellow, and flame brightness is greatly reduced. Due to suppression of water mist cooling, flame stretching length first increases and then decreases along with increase of mist flux, and the length first increases and then gradually stabilizes when momentum ratio increases. Moreover, increase of mist flux will reduce flame blow-out limit with a larger fuel flow rate. © 2022, Editorial Department of China Safety Science Journal. All rights reserved.

Language: zh