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中文摘要：
为减少气冷涡轮气动设计难度,提出一套基于多级气冷涡轮考虑冷气掺混及随流道翘曲、变厚度的S1流面计算思路,编制了带冷气的翘曲S1流面薄片计算的参数化方法程序及网格自动生成程序,改良了传统平面薄片,对比分析了改良后平面薄片、翘曲S1流面薄片以及三维计算间差异,对某高压涡轮进行了翘曲S1流面薄片气动优化.结果显示：与三维计算对比,改良后平面薄片最大流量差距为22.68%,翘曲S1流面薄片为3.58%,一维数据上翘曲S1流面薄片更逼近三维计算;型面压力分布及马赫数云图分布上翘曲面S1流面薄片较改良后平面薄片更贴近三维计算;采用翘曲S1流面薄片进行优化后,效率较原始方案提升0.41%,流量较原始方案仅增加0.21%.
英文摘要：
To reduce the difficulty of aerodynamic design in air-cooled turbine, a set of calculation ideas based on multi-stage air-cooled turbine were presented in consideration of the cooling air mixing, warped S1 stream surface and variable thickness along with flow passage; the parameterization method program and automatic mesh generation program of warped S1 stream surface slice with cooling condition were prepared, and the traditional plane slice was modified. Comparative analysis of the difference among the modified plane slice, warped S1 stream surface slice and three-dimensional calculation was made, and aerodynamic design of a high-pressure turbine with warped S1 stream surface slice was optimized. The results show that. in comparison with three-dimensional calculation, the maximum gap of mass flow in modified plane slice is up to 22.68%, and 3.58% in warped S1 stream surface slice; the warped S1 stream surface slice is closer to three-dimensional calculation on one-dimensional data; blade pressure and Mach number contour distribution of warped S1 stream surface slice are closer to three-dimensional calculation than that of modified plane slice. After aerodynamic optimization in warped S~ stream surface slice, compared with original mod- el, the stage efficiency has been increased by 0.41%, while mass flow has only been in- creased by 0.21%.
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