期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 139, 期 -, 页码 77-86出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2019.04.145
关键词
Droplet impact; Vapor explosion; Flame expansion; Fluid dynamic
资金
- National Natural Science Foundation of China [51704268]
This paper is a follow-up study for the phenomenon of vapor explosion for single water droplet impacting on a hot liquid pool. To explore the effects of vapor explosion on the dynamics of single droplet interacting with burning liquid pool, a series of experiments of pure water, water droplet with 5% NaCl, water droplet with 3% AFFF, and HFE-7100 droplet impacting on high-temperature burning oil were performed. For the cases of pure water, water droplet with 5% NaCl, and water droplet with 3% AFFF, vapor explosion can occur when the oil temperature reaches 210 degrees C. For the case of HFE-7100 droplet, however, the vapor explosion can only appear when the oil temperature ranges from 180 to 190 degrees C. Moreover, the vapor explosion has a significant effect on flame expansion. The flame expansion intensity is quantified by calculating the flame area and volume. Flame expansion intensity can rank as pure water droplet > droplet with 5% NaCl > droplet with 3% AFFF. (C) 2019 Elsevier Ltd. All rights reserved.
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