CAJ | 학술논문

高压比单级风扇静叶进口全超声，气流转折角大于50°，常规单排静叶难以达到这样高的负荷水平，采用串列静叶结构是一种有效的技术手段。针对进口超声的基元叶型，采用灵活控制中线形状的基元叶型设计方法，优化叶型前缘激波结构，降低激波、附面层干扰引起的损失。在级环境下，对分别采用新方法和定制叶型方法设计的串列静叶进行详细的性能对比，三维数值模拟结果显示：应用新方法设计的高负荷串列静叶，可降低激波损失，优化叶排通道内的激波结构，有效控制尾迹分离，改善叶片排间的流动匹配，提高串列风扇性能。
고압비단급풍선정협진구전초성，기류전절각대우50°，상규단배정협난이체도저양고적부하수평，채용천렬정협결구시일충유효적기술수단。침대진구초성적기원협형，채용령활공제중선형상적기원협형설계방법，우화협형전연격파결구，강저격파、부면층간우인기적손실。재급배경하，대분별채용신방법화정제협형방법설계적천렬정협진행상세적성능대비，삼유수치모의결과현시：응용신방법설계적고부하천렬정협，가강저격파손실，우화협배통도내적격파결구，유효공제미적분리，개선협편배간적류동필배，제고천렬풍선성능。
The inlet flow of stator for high pressure ratio fan was supersonic and the flow turning angle was bigger than 50 degree. The tandem stator was used to achieve the loading lever, which could not be done by the conventional stator. The supersonic elementary blade was designed by the flexible control method of camber line shape, which could optimize the shock wave structure, decrease the loss caused by shock-boundary interaction. Detail comparisons of performance between new methods and customizing blade profile methods were carried out in stage environments. The numerical simulation results indicated the high loading tandem stator, which created by advanced blade design techniques decreased the shock wave loss, optimized the shock structure, controlled the wakes separation, improved the flow matching and increased the tandem fan performance.