TY - GEN
T1 - Flame Quenching Dynamics of High Velocity Flames in Rectangular Cross-section Channels
AU - Mahuthannan, Ariff Magdoom
AU - Lacoste, Deanna
AU - Damazo, Jason
AU - Kwon, Eddie
AU - Roberts, William L.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The research reported in this publication was supported partly by the Boeing Company and partly by Center Competitive Funding from King Abdullah University of Science and Technology (KAUST).
PY - 2017/1/5
Y1 - 2017/1/5
N2 - Understanding flame quenching for different conditions is necessary to develop safety devices like flame arrestors. In practical applications, the speed of a deflagration in the lab-fixed reference frame will be a strong function of the geometry through which the deflagration propagates. This study reports on the effect of the flame speed, at the entrance of a quenching section, on the quenching distance. A 2D rectangular channel joining two main spherical vessels is considered for studying this effect. Two different velocity regimes are investigated and referred to as configurations A, and B. For configuration A, the velocity of the flame is 20 m/s, while it is about 100 m/s for configuration B. Methane-air stoichiometric mixtures at 1 bar and 298 K are used. Simultaneous dynamic pressure measurements along with schlieren imaging are used to analyze the quenching of the flame. Risk assessment of re-ignition is also reported and analyzed.
AB - Understanding flame quenching for different conditions is necessary to develop safety devices like flame arrestors. In practical applications, the speed of a deflagration in the lab-fixed reference frame will be a strong function of the geometry through which the deflagration propagates. This study reports on the effect of the flame speed, at the entrance of a quenching section, on the quenching distance. A 2D rectangular channel joining two main spherical vessels is considered for studying this effect. Two different velocity regimes are investigated and referred to as configurations A, and B. For configuration A, the velocity of the flame is 20 m/s, while it is about 100 m/s for configuration B. Methane-air stoichiometric mixtures at 1 bar and 298 K are used. Simultaneous dynamic pressure measurements along with schlieren imaging are used to analyze the quenching of the flame. Risk assessment of re-ignition is also reported and analyzed.
UR - http://hdl.handle.net/10754/625560
UR - https://arc.aiaa.org/doi/10.2514/6.2017-0823
UR - http://www.scopus.com/inward/record.url?scp=85017198239&partnerID=8YFLogxK
U2 - 10.2514/6.2017-0823
DO - 10.2514/6.2017-0823
M3 - Conference contribution
AN - SCOPUS:85017198239
SN - 9781624104473
BT - 55th AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics (AIAA)
ER -