Prediction and reduction of sound propagation from installed jets

预测和减少已安装喷气机的声音传播

• 批准号: 1965979
• 金额: --
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1965979
• 关键词: Prediction; reduction; sound; propagation; installed

Prediction of installed aircraft jet noise requires accurate modelling of the interaction between the turbulent jet, wing, flap and pylon. The project will make further progress on a recently developed coupled framework of Large-Eddy Simulation and Acoustic Perturbation Equations solution (APE) for capturing the noise propagation. A potential combination of hybrid LES-RANS type methods (in the less important area) and wall modelled LES (in the key area of interest, e.g. nozzle exit) will be explored. The project will also work in conjunction with the latest development/progress on inflow near-wall and free-stream turbulence. Novel concepts, such as serration on the wing/flap and variable area nozzle, specifically targeting the interaction of jet and flap will be further examined.The project will complement the ongoing ACAPELLA project and work in partnership with Rolls-Royce plc, Cambridge and Southampton Universities.

预测已安装的飞机喷射噪声需要准确对湍流，机翼，襟翼和塔架之间的相互作用进行准确的建模。该项目将在最近开发的大涡模拟和声学扰动方程解决方案（APE）的耦合框架上取得进一步的进展，以捕获噪声传播。将探索混合LES型方法（在不太重要的区域）和壁模型LE（在关键的关键领域，例如喷嘴出口）的潜在组合。该项目还将与近壁和自由流湍流的最新开发/进展结合使用。将进一步检查新颖的概念，例如机翼/襟翼上的锯齿和可变区域喷嘴，专门针对喷气和襟翼的相互作用。