变循环发动机可调导叶技术对提升发动机宽工况性能至关重要。针对对高压涡轮采取可调导叶的应用和研究相对较少的问题，首先对PW-e3高压涡轮采取了可调导叶设计，通过数值模拟方法研究了可调导叶对设计工况涡轮级气动性能的影响，并系统研究了导叶开度变化时跨音速高压涡轮叶栅内二次流和激波的变化特点。结果表明，对高压涡轮导叶采取可调设计能够有效满足变循环发动机的宽工况需求，但会使高压涡轮气动效率降低超过1%，且导叶关小相比于导叶开大时效率降低幅度更大。此外，开度变化显著影响高压涡轮二次流与激波结构，-3°工况下导叶开始出现跨音速流动，动叶激波损失突增；随着导叶开大，动叶压力侧分离流动发展为失速团，并导致动叶马赫数增加。研究揭示了高压涡轮可调导叶与跨音速流场的耦合作用特点，为变几何高压涡轮的宽工况气动设计与性能优化提奠定了一定的理论基础。

The adjustable guide vane technology of variable cycle engines is crucial for improving the performance of engines under wide operating conditions. In response to the relatively limited application and research on the use of adjustable guide vanes for high-pressure turbines, an adjustable guide vane design was first adopted for the PW-e3 high-pressure turbine. The influence of adjustable guide vanes on the aerodynamic performance of the turbine stage under design conditions was studied through numerical simulation methods, and the characteristics of secondary flow and shock waves in the transonic high-pressure turbine cascade were systematically studied when the guide vane opening changed. The results show that adopting adjustable design for high-pressure turbine guide vanes can effectively meet the wide operating conditions of variable cycle engines, but it will reduce the aerodynamic efficiency of the high-pressure turbine by more than 1%, and the efficiency reduction is greater when the guide vanes are closed smaller than when they are opened larger. In addition, the change in opening significantly affects the secondary flow and shock wave structure of high-pressure turbines. Under -3° operating conditions, transonic flow begins to appear in the guide vanes, and the shock wave loss of the moving blades suddenly increases; As the guide vanes expand, the separated flow on the pressure side of the moving blades develops into a stall mass, leading to an increase in the mach number of the moving blades. The study revealed the coupling characteristics between adjustable guide vanes of high-pressure turbines and transonic flow fields, laying a theoretical foundation for the aerodynamic design and performance optimization of variable geometry high-pressure turbines under wide operating conditions.

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