| Citation: | LI Xukang, ZHANG Guoyuan, WU Fuzhang, et al. Optimization and innovative design of surface groove of TPS sling-oil retainer[J]. Journal of Aerospace Power, 2023, 38（8）：1846-1856 doi: 10.13224/j.cnki.jasp.20210654
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Owing to failure of existing semi-circular grooved sling-oil retainer in the turbine power simulator to achieve the maximum efficiency of heat dissipation and lubrication of the internal circulating flow field, the parameters’ optimization research of the sling-oil retainer for reducing the maximum flow field temperature and the eddy flow effect was carried out. The new groove (including parabola, involute, logarithmic spiral, etc.) structures for the sling-oil retainer were proposed, and the influence of single factor (such as groove depth, groove number and helix angle coefficient) on the flow field characteristics was discussed. The multi-factor and multi-objective parameters were optimized by the orthogonal experiment method. The results showed that the logarithmic spiral groove was an optimal structure that can effectively improve the lubrication and heat dissipation performance, and a set of optimal logarithmic spiral groove parameters by orthogonal experiment method were represented by groove depth of 6 mm, groove number of 10, and helix angle coefficient of 0.4. Based on the results, a new type of sling-oil retainer for more harsh working conditions was designed, and its flow field characteristics under typical working conditions were obtained by the theoretical simulation.
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