| Citation: | YU Guoqiang, SUI Zhengqing, CHEN Zhengyang, et al. Numerical analysis on cooling performance of quasi-elliptic multi-inclined holes in CMC combustion liner[J]. Journal of Aerospace Power, 2025, 40（1）：20230084 doi: 10.13224/j.cnki.jasp.20230084
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In order to improve the cooling performance of ceramic matrix composite combustion liner wall, a new quasi-elliptic multi-inclined hole cooling structure was designed on the basis of the existing circular multi-inclined hole cooling structure. Meanwhile, the cooling effects of two kinds of multi-inclined hole structures were compared by using three-dimensional numerical simulation method. The results showed that: compared with the circular hole feature simulator, the high temperature area on the wall of the new quasi-elliptic inclined hole simulated part was obviously narrower, the hot spots at high temperature were reduced, and the temperature distribution was more uniform. In the warp yarn direction, the high stress area of the simulated part with quasi-elliptic inclined hole features was reduced, and the stress concentration phenomenon was weakened. In the weft yarn direction, the high stress regions in the feature simulators of quasi-elliptic inclined hole and circular hole were found.
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