| Citation: | ZHENG Ningyue, CHEN Xue, SUN Chuang, et al. Analysis on heat transfer performance of honeycomb sandwich structure with side wall openings[J]. Journal of Aerospace Power, 2024, 39（1）：20210398 doi: 10.13224/j.cnki.jasp.20210398
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Targeting the new honeycomb sandwich structure with holes on the sidewall, the coupled heat transfer model of high temperature radiation-heat conduction of honeycomb unit was established. The internal heat transfer mechanism was analyzed by using the finite element method, and the high temperature equivalent thermal conductivity was obtained. The effects of structural parameters, such as hole shape, hole parameters and hole arrangement on equivalent thermal conductivity were discussed, and the calculation correlation of equivalent thermal conductivity was obtained by fitting. Studies showed that the hole shape had little effect on the equivalent thermal conductivity of honeycomb cells. The equivalent thermal conductivity decreased with the increase of porosity, which was less affected by the number of holes. The equivalent thermal conductivity of parallel holes was lower than that of series holes. When the porosity was 14% and the number of holes was 4, the equivalent thermal conductivity was 8.4% smaller than that of series holes, 16.1% lower than that without holes.
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