Research into Buffet of Low Pressure System Outlet Guide Vanes

新型航空发动机结构包括具有低叶尖速度和低压比的先进风扇。这些风扇设计集成在具有挑战性的发动机结构中，包括短细线激进的进气设计和减少出口导向叶片（OGV）和挂架的轴向距离。OGV抖振可能会限制风扇子系统的可操作性，特别是在非设计和逆风条件下。这项工作将探索使用Hyrid LES-RANS模拟OGV抖振的可能性，并使RR能够了解控制抖振的关键参数，在设计阶段建立评估标准，并可能改进OGV设计。

Novel aero-engine architectures include advanced fans with low tip speeds and low pressure ratios. These fan designs are integrated in challenging engine architectures comprising of short slim-line aggressive intake designs and reduced axial distance from Outlet Guide Vanes (OGV) and pylon. Fan sub-system operability could be limited by OGV buffet, especially at off-design and crosswind conditions. This work will explore the possibility of simulating bufet of OGVs using Hyrid LES-RANS and enable RR to develop an understanding of key parameters controlling buffet, establish assessment criteria at design stage and potentially improve OGV design.