TY - GEN
T1 - 10 kHz SPIV/OH-PLIF simultaneous measurements in premixed turbulent Bunsen flames
AU - Mannaa, Ossama
AU - Mansour, Morkous S.
AU - Chung, Suk Ho
N1 - KAUST Repository Item: Exported on 2020-12-25
PY - 2015/1/1
Y1 - 2015/1/1
N2 - The dynamics and properties of a premixed turbulent flame, formed in the presence of subsonic, high speed, homogenous, nearly isotropic turbulence in an unconfined system are experimentally investigated. The experiments are performed using simultaneous time-resolved measurements of particle image velocimetry and planar laser-induced fluorescence of OH radicals. Five mean stream wise bulk exit velocities of: 3.35, 6.97, 11.34, 16.84, and 24.79 m/s for lean (φ = 0.8) methane/air mixture with different percentages of H2 addition. The flame front topology has shown a strong dependence on the turbulence intensity in terms of exhibiting folded and convoluted flame sheet structure. Moreover, the addition of H2 changes significantly the flame structure, in terms of flame length and wrinkling due to the high reactivity of methane/H2/air mixture. For flames with high bulk exit velocity, local quenching and healing processes are likely; its probability is reduced with H2 addition.
AB - The dynamics and properties of a premixed turbulent flame, formed in the presence of subsonic, high speed, homogenous, nearly isotropic turbulence in an unconfined system are experimentally investigated. The experiments are performed using simultaneous time-resolved measurements of particle image velocimetry and planar laser-induced fluorescence of OH radicals. Five mean stream wise bulk exit velocities of: 3.35, 6.97, 11.34, 16.84, and 24.79 m/s for lean (φ = 0.8) methane/air mixture with different percentages of H2 addition. The flame front topology has shown a strong dependence on the turbulence intensity in terms of exhibiting folded and convoluted flame sheet structure. Moreover, the addition of H2 changes significantly the flame structure, in terms of flame length and wrinkling due to the high reactivity of methane/H2/air mixture. For flames with high bulk exit velocity, local quenching and healing processes are likely; its probability is reduced with H2 addition.
UR - http://hdl.handle.net/10754/666640
UR - https://research.kaust.edu.sa/en/publications/10-khz-spivoh-plif-simultaneous-measurements-in-premixed-turbulen
UR - http://www.scopus.com/inward/record.url?scp=84947230496&partnerID=8YFLogxK
M3 - Conference contribution
BT - 10th Asia-Pacific Conference on Combustion, ASPACC 2015
PB - Combustion Institute
ER -