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ABSTRACT
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.
Additional information
Funding
This work was supported by National Natural Science Foundation of China (NSFC) [grant number 51406046], Opening Fund of State Key Laboratory of Fire Science (SKLFS) [grant numbers HZ2016-KF12 and HZ2017-KF08] Sichuan Science and Technology project grant number 2016JY0144, the Opening Fund of State Key Laboratory of Coal Mine Disaster Dynamics and Control under grant number 2011DA105287-FW201402 and the Fundamental Research Funds for the Central Universities [grant numbers CQU2018CDHB1B06 and 2018CDXYCH0015].