| Citation: | ZHOU Tao, LI Feng, ZHAO Kai, et al. Effect of swirl numbers on flow characteristics of a concentric staged lean direct injection combustor[J]. Journal of Aerospace Power, 2022, 37（11）：2488-2500 doi: 10.13224/j.cnki.jasp.20220290
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A numerical investigation was conducted to study the effect of swirl numbers of the main stage and the pilot stage on the flow characteristics of a concentric staged lean direct injection (LDI) combustor. The swirl numbers at different reference cross-sections were used to measure the swirling intensity of the two stages respectively. The results showed that the width and reverse flow rate of the central recirculation zone (CRZ) increased with the increment of
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