期刊
EXPERIMENTAL HEAT TRANSFER
卷 32, 期 3, 页码 284-301出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/08916152.2018.1505788
关键词
Horizontal projection; Enclosure fire; Spill flame; Under-ventilated fires; Air entrainment; Flame length
资金
- National Natural Science Foundation of China (NSFC) [51406046]
- Opening Fund of State Key Laboratory of Fire Science (SKLFS) [HZ2016-KF12, HZ2017-KF08]
- Sichuan Science and Technology project [2016JY0144]
- Opening Fund of State Key Laboratory of Coal Mine Disaster Dynamics and Control [2011DA105287-FW201402]
- Fundamental Research Funds for the Central Universities [CQU2018CDHB1B06, 2018CDXYCH0015]
This paper investigates the effects of the horizontal projection on the spill flame ejected from an enclosure. Experiments were carried out in a reduced-scale enclosure and a horizontal projection was installed above the opening. The spill flame beneath a horizontal projection is composed of a horizontal momentum-dominated rectangle region and a buoyancy-dominated semicircle region. The overall averaged excess air ratio and the averaged entrainment coefficient of the spill flame beneath a horizontal projection were investigated. A theoretical model for the total flame length was developed. The model predictions agree well with the measured values.
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