Flame Quenching Dynamics of High Velocity Flames in Rectangular Cross-section Channels
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Mechanical Engineering Program
Clean Combustion Research Center
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AbstractUnderstanding 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.
CitationMahuthannan AM, Lacoste DA, Damazo J, Kwon E, Roberts WL (2017) Flame Quenching Dynamics of High Velocity Flames in Rectangular Cross-section Channels. 55th AIAA Aerospace Sciences Meeting. Available: http://dx.doi.org/10.2514/6.2017-0823.
SponsorsThe 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).
Conference/Event name55th AIAA Aerospace Sciences Meeting