Jet-surface interaction noise prediction

发展对安装对射流噪声影响的理解和预测模型。尤其是塔架尾迹的影响。对于繁忙机场附近的社区来说，飞机噪音是一个重要问题。一种特殊的噪声源来自发动机排气流与附近机身表面（例如，安装在机翼下的涡轮风扇飞机的高升力襟翼）之间的相互作用。更具体地说，当表面后缘更靠近流动时，湍流射流产生的原本不传播的动水压力场突然转变为完全传播的声场，在地面和飞机机舱内都能听到。这种流动-表面相互作用机制也是其他几个实际应用的基础（例如汽车a柱后视镜的尾流窗口相互作用噪声）以及未来的几个集成发动机机翼概念。马修·威尔曼将加入劳斯莱斯大学技术中心的喷气噪声团队。喷气机团队使用实验、数值和分析方法研究喷气机噪声的各个方面。该候选人将支持目前的研究工作，研究由喷气襟翼相互作用产生的噪音，这是劳斯莱斯公司非常感兴趣的。

Developing understanding of, and predictive models for, effects of installation on jet noise. In particular effect of pylon wakes.Aircraft noise is an important issue for communities close to busy airports. One particular noise source arises from the interaction between the engine exhaust flow and nearby airframe surfaces (e.g. the high-lift flap for under-wing-mounted turbofan aircraft). More specifically, as the surface trailing edge is brought closer to the flow, the otherwise non-propagating hydrodynamic pressure field produced by the turbulent jet suddenly transforms into a fully-propagating acoustic field, which can be heard both on the ground and within the aircraft cabin. This flow-surface interaction mechanism is also fundamental to several other real-world applications (e.g. wake-window interaction noise from automotive A-pillar wing mirrors) as well as several future integrated engine-wing concepts.Matthew Wellman will join the jet noise team at the Rolls-Royce University Technology Centre. The jet team research all aspects of jet noise using experimental, numerical and analytical approaches. The candidate will support the current research effort looking at the noise produced by jet-flap interaction, which is of significant interest to Rolls-Royce.