| Citation: | ZHAI Yunchao, ZHONG Shilin, KANG Yudong, et al. Study on ignition performance of a cavity trapped vortex combustor of the afterburner with an air-blast-swirl atomizer[J]. Journal of Aerospace Power, 2024, 39（12）：20220808 doi: 10.13224/j.cnki.jasp.20220808
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In order to study the lean ignition characteristics of an air-blast-swirl atomizer in a cavity trapped vortex combustor of the afterburner, an air-blast-swirl atomizer with a flat bell mouth was designed. Through test research and numerical simulation analysis, the characteristics of spray cone angle and lean ignition of the air-blast-swirl atomizer were obtained. The results showed that the spanwise spray cone angle of the air-blast-swirl atomizer was greatly affected by air pressure and oil pressure, while the radial spray cone angle was basically unaffected and kept stable; under the condition of Mach number 0.53, the cavity trapped vortex combustor of the afterburner can successfully ignite with lean ignition at the fuel air ratio of
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