TY - JOUR
T1 - Flame spread behavior characterization of discrete fuel array under a forced flow
AU - Di Cristina, Giovanni
AU - Skowronski, Nicholas S.
AU - Simeoni, Albert
AU - Rangwala, Ali S.
AU - Im, Seong Kyun
N1 - Funding Information:
This work was supported by U.S. DOD/EPA/DOE Strategic Environmental Research Development Program (SERDP, Project Number: RC-2641 ). Seong-kyun Im was supported by Korea University research grants.
Publisher Copyright:
© 2020 The Combustion Institute.
PY - 2021
Y1 - 2021
N2 - The forced flow driven flame spread behavior along an array of discrete wooden fuel elements was experimentally investigated, which could be an important step to understanding the flow-flame interactions that govern fire spread. Fuel arrays with five different spacings (0.75, 0.875. 1.00, 1.125, and 1.25 cm) were subject to flow speeds ranging from 2.2 to 4.3 m/s at approximately 0.2 m/s intervals. For spacing-flow speed conditions tested in the current study, the flame spread behavior was categorized into three different regimes, continuous, discrete, and quenching, and the regimes were presented in a flammability map. Visual analysis of top and side view video data were used to describe the changing flame behavior and increasing discretization of the overall flame structure as the flow speed increases. An analysis of the fluid mechanics and heat transfer conditions revealed a correlation between the Stanton number (St), the Damkohler number (Da), and the onset of flame instabilities and quenching.
AB - The forced flow driven flame spread behavior along an array of discrete wooden fuel elements was experimentally investigated, which could be an important step to understanding the flow-flame interactions that govern fire spread. Fuel arrays with five different spacings (0.75, 0.875. 1.00, 1.125, and 1.25 cm) were subject to flow speeds ranging from 2.2 to 4.3 m/s at approximately 0.2 m/s intervals. For spacing-flow speed conditions tested in the current study, the flame spread behavior was categorized into three different regimes, continuous, discrete, and quenching, and the regimes were presented in a flammability map. Visual analysis of top and side view video data were used to describe the changing flame behavior and increasing discretization of the overall flame structure as the flow speed increases. An analysis of the fluid mechanics and heat transfer conditions revealed a correlation between the Stanton number (St), the Damkohler number (Da), and the onset of flame instabilities and quenching.
KW - Flame spread
KW - Flow-flame interaction
KW - Quenching
KW - Wind-driven fire
KW - Wood combustion
UR - http://www.scopus.com/inward/record.url?scp=85089552131&partnerID=8YFLogxK
U2 - 10.1016/j.proci.2020.05.035
DO - 10.1016/j.proci.2020.05.035
M3 - Conference article
AN - SCOPUS:85089552131
SN - 1540-7489
VL - 38
SP - 5109
EP - 5117
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
IS - 3
T2 - 38th International Symposium on Combustion, 2021
Y2 - 24 January 2021 through 29 January 2021
ER -