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采用自主研发的全三维黏性涡轮设计体系对某双级高压涡轮进行了反设计,并利用商业软件CFX12.0在采用二方程湍流模型SST(shear stress transportation)模型、考虑冷气和转捩等条件下对反设计得到的叶型进行了全三维计算分析,采用源项模拟技术处理气膜冷却流动.计算结果与试验数据进行了对比,结果表明计算得到的效率与试验值吻合,中等负荷高压涡轮气冷叶型采用后部加载设计技术可有效控制流动损失.
The reverse design of a two-stage high-pressure turbine was carried out by using self-developed full three-dimensional viscous turbine design system. By using commercial software CFX12.0, a two-equation shear stress transportation (SST) model was adopted, Under the full three-dimensional calculation and analysis of the counter-designed leaf type, the source-item simulation technology was used to deal with the film cooling flow.The calculated results were compared with the experimental data, the results show that the calculated efficiency is consistent with the experimental value, medium-load high-pressure turbine Air-cooled leaf-type rear load design technology can effectively control the flow loss.