The initial mechanism of cellular instabilities on the flame surface was investigated experimentally. Firstly, mono-dispersed ethanol droplets were created via the Wilson cloud principle in a spherical combustion chamber, and aerosol ethanol/air flame propagation was tracked under microgravity conditions. Schlieren images revealed that at the beginning of the cellular structure formation, dark spots formed linking to the signal loss in a density gradient. This phenomenon is assumed to be local extinction and quenching on the flame front due to either liquid droplets’ presence or evaporation. To further investigate the observed phenomenon, stagnation flame experiments were performed for rich propane/air gaseous flames with isolated ethanol droplet injection. The evidence for the local extinction on the flame surface due to droplet passage was found via the Chemiluminescence method. The intrinsic instabilities were found to be triggered by the droplets in cases where the flame cannot recover its initial state.
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@article{CRMECA_2023__351_S2_41_0,
author = {Deniz Kaya Eyice and Fabien Halter and Ahmet Yozgatl{\i}gil and \.Iskender G\"okalp and Christian Chauveau},
title = {Investigation of cellular instabilities and local extinction for two-phase flames under microgravity conditions},
journal = {Comptes Rendus. M\'ecanique},
pages = {41--56},
publisher = {Acad\'emie des sciences, Paris},
volume = {351},
number = {S2},
year = {2023},
doi = {10.5802/crmeca.174},
language = {en},
}
TY - JOUR AU - Deniz Kaya Eyice AU - Fabien Halter AU - Ahmet Yozgatlıgil AU - İskender Gökalp AU - Christian Chauveau TI - Investigation of cellular instabilities and local extinction for two-phase flames under microgravity conditions JO - Comptes Rendus. Mécanique PY - 2023 SP - 41 EP - 56 VL - 351 IS - S2 PB - Académie des sciences, Paris DO - 10.5802/crmeca.174 LA - en ID - CRMECA_2023__351_S2_41_0 ER -
%0 Journal Article %A Deniz Kaya Eyice %A Fabien Halter %A Ahmet Yozgatlıgil %A İskender Gökalp %A Christian Chauveau %T Investigation of cellular instabilities and local extinction for two-phase flames under microgravity conditions %J Comptes Rendus. Mécanique %D 2023 %P 41-56 %V 351 %N S2 %I Académie des sciences, Paris %R 10.5802/crmeca.174 %G en %F CRMECA_2023__351_S2_41_0
Deniz Kaya Eyice; Fabien Halter; Ahmet Yozgatlıgil; İskender Gökalp; Christian Chauveau. Investigation of cellular instabilities and local extinction for two-phase flames under microgravity conditions. Comptes Rendus. Mécanique, Volume 351 (2023) no. S2, pp. 41-56. doi : 10.5802/crmeca.174. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.174/
[1] The effect of drop size on flame propagation in liquid aerosols, Proc. R. Soc. Lond., Ser. A, Volume 225 (1954) no. 1162, pp. 375-392 | DOI
[2] Combustion of fuel vapor-drop-air systems: Part II—Spherical flames in a vessel, Combust. Flame, Volume 20 (1973) no. 3, pp. 351-357 | DOI
[3] Flame propagation in heterogeneous mixtures of fuel droplets, fuel vapor and air, Symposium (International) on Combustion, Volume 18 (1981) no. 1, pp. 321-328 | DOI
[4] Flame propagation in heterogeneous mixtures of fuel drops and air, Combust. Flame, Volume 66 (1986) no. 2, pp. 193-210 | DOI
[5] An experimental study on flame propagation in lean fuel droplet-vapor-air mixtures by using microgravity conditions, Symposium (International) on Combustion, Volume 27 (1998) no. 2, pp. 2667-2674 | DOI
[6] On a method of making visible the paths of ionising particles through a gas, Proc. R. Soc. Lond., Ser. A, Volume 85 (1911) no. 578, pp. 285-288 | DOI
[7] Flame propagation in fuel droplet-vapor-air mixtures, Symposium (International) on Combustion, Volume 15 (1975) no. 1, pp. 445-452 | DOI
[8] Propagation velocity and structure of flames in droplet-vapor-air mixtures, Combust. Sci. Technol., Volume 15 (1977), pp. 169-177 | DOI
[9] Burning rates and flame oscillations in globally homogeneous two-phase mixtures (flame speed oscillations in droplet cloud flames), Combust. Sci. Technol., Volume 178 (2006) no. 12, pp. 2177-2198 | DOI
[10] Comparison of iso-octane burning rates between single-phase and two-phase combustion for small droplets, Combust. Flame, Volume 144 (2006) no. 3, pp. 513-525 | DOI
[11] Laminar mass burning and entrainment velocities and flame instabilities of i-octane, ethanol and hydrous ethanol/air aerosols, Combust. Flame, Volume 161 (2014) no. 6, pp. 1620-1632 | DOI
[12] Characterization of cellular instabilities of a flame propagating in an aerosol, Proceedings of ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, American Society of Mechanical Engineer (2015), GT2015-44022 | DOI
[13] Experimental investigation of the mechanisms of cellular instabilities developing on spherical two-phase flames, Combust. Sci. Technol., Volume 188 (2016) no. 11-12, pp. 2026-2043 | DOI
[14] Experimental investigation of the passage of fuel droplets through a spherical two-phase flame, Proc. Combust. Inst., Volume 36 (2017) no. 2, pp. 2549-2557 | DOI
[15] Experimental study of the morphology of two-phase flame instabilities in microgravity, At. Sprays, Volume 28 (2018) no. 10, pp. 915-929 | DOI
[16] Instability of a flame front propagating through a fuel-rich droplet–vapour–air cloud, Combust. Theory Model., Volume 3 (1999) no. 3, pp. 567-584 | DOI | Zbl
[17] Propagation and extinction of an unsteady spherical spray flame front, Combust. Theory Model., Volume 7 (2003), pp. 163-174 | DOI | MR | Zbl
[18] Linear stability analysis of laminar premixed spray flames, Proc. R. Soc. Lond., Ser. A, Volume 457 (2001) no. 2005, pp. 1-31 | DOI | MR | Zbl
[19] Finite-rate evaporation and droplet drag effects in spherical flame front propagation through a liquid fuel mist, Combust. Flame, Volume 148 (2007) no. 4, pp. 187-197 | DOI
[20] Effects of finite-rate droplet evaporation on the ignition and propagation of premixed spherical spray flame, Combust. Flame, Volume 162 (2015) no. 5, pp. 2128-2139 | DOI
[21] Effects of finite-rate droplet evaporation on the extinction of spherical burner-stabilized diffusion flames, Int. J. Heat Mass Transfer, Volume 99 (2016), pp. 691-701 | DOI
[22] Propagation of heterogeneous and homogeneous planar flames in fuel droplet mists, Int. J. Multiphase Flow, Volume 133 (2020), 103452 | DOI | MR
[23] Propagation of weakly stretched premixed spherical spray flames in localized homogeneous and heterogeneous reactants, Phys. Fluids, Volume 32 (2020), 123302 | DOI
[24] Premixed flame dynamics in presence of mist, Combust. Sci. Technol., Volume 191 (2019) no. 2, pp. 197-207 | DOI
[25] Microgravity experiments and numerical studies on ethanol/air spray flames, C. R. Méc. Acad. Sci. Paris, Volume 345 (2017) no. 1, pp. 99-116 | DOI
[26] Étude expérimentale de l’interaction goutte/flamme : propagation d’une flamme dans un aérosol en microgravité et passage d’une goutte à travers un front de flamme, Ph. D. Thesis, Université d’Orléans, Orléans, France (2020)
[27] Caractérisation de la propagation d’une flamme dans un milieu diphasique (brouillards) en microgravité, Ph. D. Thesis, Université d’Orléans, Orléans, France (2017)
[28] Caractérisation expérimentale de la propagation d’une flamme laminaire dans un milieu diphasique (brouillard) à haute pression et en microgravité, Ph. D. Thesis, Université d’Orléans, Orléans, France (2014)
[29] The principles of cloud-chamber technique, Cambridge Monographs on Physics, Cambridge University Press, 2014
[30] Evaporation of a single ethanol droplet interacting with a premixed laminar CH4/air flame, ICLASS 2021, 15 Triennial International Conference on Liquid Atomization and Spray Systems (2021) | DOI
[31] Isolating strain and curvature effects in premixed flame/vortex interactions, J. Fluid Mech., Volume 831 (2017), pp. 618-654 | DOI | MR | Zbl
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