TY - GEN
T1 - Flame quenching dynamics in a rectangular cross section channel for different velocity regimes
AU - Mahuthannan, Ariff Magdoom
AU - Lacoste, Deanna
AU - Damazo, Jason
AU - Kwon, Eddie
AU - Roberts, William L.
N1 - KAUST Repository Item: Exported on 2020-12-30
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 - 2017/1/1
Y1 - 2017/1/1
N2 - Understanding the efficiency of flame arresting devices in extreme conditions and critical locations, such as the inlets of fuel tanks, is required to guarantee that the system design is both safe and optimized. The efficiency of these flame arresting devices is influenced by various parameters such as fuel, mixture fraction, pressure, surface material, surface temperature, flame front velocity, etc. However the significance of flame front velocity to the quenching distance has yet to be quantified. In our preliminary study, it has been observed that the quenching distance is a strong function of flame front velocity. Previously, two different velocity regimes (20 m/s and 100 m/s) were studied; however, to develop a predictive model of this phenomenon, understanding this behavior over a wider range of velocities is required. Experiments were conducted in a 2D rectangular duct connecting an ignition chamber to a secondary chamber. Stoichiometric methane-air mixtures at initial conditions 1 bar and 298 K are used in this study. Different duct configurations with similar quenching elements are used for achieving flame front velocities in different regimes. The influence of flame front velocity on quenching distance is discussed in this paper.
AB - Understanding the efficiency of flame arresting devices in extreme conditions and critical locations, such as the inlets of fuel tanks, is required to guarantee that the system design is both safe and optimized. The efficiency of these flame arresting devices is influenced by various parameters such as fuel, mixture fraction, pressure, surface material, surface temperature, flame front velocity, etc. However the significance of flame front velocity to the quenching distance has yet to be quantified. In our preliminary study, it has been observed that the quenching distance is a strong function of flame front velocity. Previously, two different velocity regimes (20 m/s and 100 m/s) were studied; however, to develop a predictive model of this phenomenon, understanding this behavior over a wider range of velocities is required. Experiments were conducted in a 2D rectangular duct connecting an ignition chamber to a secondary chamber. Stoichiometric methane-air mixtures at initial conditions 1 bar and 298 K are used in this study. Different duct configurations with similar quenching elements are used for achieving flame front velocities in different regimes. The influence of flame front velocity on quenching distance is discussed in this paper.
UR - http://hdl.handle.net/10754/666753
UR - https://research.kaust.edu.sa/en/publications/flame-quenching-dynamics-in-a-rectangular-cross-section-channel-f
UR - http://www.scopus.com/inward/record.url?scp=85048984337&partnerID=8YFLogxK
M3 - Conference contribution
BT - 10th U.S. National Combustion Meeting
PB - Eastern States Section of the Combustion Institute
ER -