| Citation: | MIAO Jianlei, HU Bin, SHI Qiang, et al. Research on the influences of structural parameters of small slot wide evaporative fuel supply/flame stabilization integrated flameholder on lean ignition and lean blowout performance[J]. Journal of Aerospace Power, 2026, 41（2）：20230788 doi: 10.13224/j.cnki.jasp.20230788
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With the advantages of good flame stability and high total pressure recovery coefficient, the small slot wide evaporative fuel supply/flame stabilization integrated flameholder has a good application prospect in the afterburner of wide-range aspirated engine in the future. To investigate the influences of structural parameters on the performances of the flameholder lean ignition and lean blowout, the lean ignition and lean blowout test and cold state numerical simulation of the flameholder with different slot width and hole ratio were carried out in rectangular test section under the condition of air velocity of 40—115 m/s and air temperature of 573 K. The results showed that: (1) with the increase of the hole ratio, the number of vortices in the local recirculation increased, the fuel atomization and evaporation were enhanced, and the ignition and lean blowout fuel/air ratio of the combustion chamber decreased; (2) with the increase of incoming flow speed, the ignition and lean blowout fuel/air ratio of large hole ratio flameholder decreased first and then increased, and the ignition and lean blowout fuel/air ratio of small hole ratio flameholder decreased continuously; (3) with the increase of slot width, the size of vortex system in the local recirculation zone increased, the fuel atomization and evaporation were enhanced, and the ignition and lean blowout fuel/air ratio of the combustion chamber decreased.
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