AEROENGINE AEROACOUSTIC INTERACTIONS

航空发动机气动声学相互作用

• 批准号: EP/I010440/1
• 负责人: Paul G. Tucker
• 金额: $ 56.27万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2011
• 资助国家: 英国
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FI010440%2F1
• 关键词: AEROENGINE; AEROACOUSTIC; INTERACTIONS

Traditionally both computational and experimental turbomachinery studies explore isolated components. However, the recent Stanford University whole engine simulation, acknowledges that strong component interactions can take place, and that to advance understanding these interactions must be accounted for. This is strong motivation for connecting Savill and Peake's recent EPSRC computational modelling work on the fan and outlet guide vanes to Tucker's recent EPSRC funded simulation work on the jet, through the fan bypass flow. Once connected, we then wish to extend further downstream, ultimately exploring the interaction of the nacelle shear layer and jet with the deployed wing flap of the airframe. The key objective for computer models is to predict engine-airframe-pylon interactions. Here, moving in this direction, we wish to perform ambitious large eddy simulation and analytical studies to predict the fan, outlet guide vane, pylon interaction along with other bypass duct component interactions (a real bypass duct is not a clean geometry with multiple gas path blockages). We then wish to feed this information into the jet nozzle, exploring the scattering of the upstream sound by the jet pipes and the interaction of this with the downstream airframe. The physical insights and models gained should lay foundations for quieter more environmentally friendly aircraft. Notably, the study will endeavour to exploit the traditional triad of measurement, analytical analysis and computation. However, the former will be based on existing data.

传统上，计算和实验的量子力学研究都是探索孤立的成分。然而，最近的斯坦福大学的整体发动机模拟，承认强烈的组件相互作用可以发生，并认为，为了促进理解这些相互作用必须考虑。这是强烈的动机连接萨维尔和皮克最近的EPSRC计算模型的风扇和出口导向叶片的工作，塔克最近的EPSRC资助的模拟工作的射流，通过风扇旁路流。一旦连接，我们希望进一步向下游延伸，最终探索短舱剪切层和喷气与机身展开襟翼的相互作用。计算机模型的关键目标是预测发动机-机体-挂架的相互作用。在此，我们希望在此方向上进行雄心勃勃的大涡模拟和分析研究，以预测风扇、出口导叶、塔架的相互作用沿着与其他旁路管道部件的相互作用（真实的旁路管道不是具有多个气路堵塞的干净几何形状）。然后，我们希望将这些信息输入喷管，研究喷管对上游声音的散射以及它与下游机体的相互作用。获得的物理见解和模型应该为更安静更环保的飞机奠定基础。值得注意的是，这项研究将努力利用传统的测量、分析和计算三位一体。但是，前者将以现有数据为基础。

项目成果

Eddy resolving simulations in aerospace - Invited paper (Numerical Fluid 2014)

• DOI: 10.1016/j.amc.2015.02.018
• 发表时间: 2016
• 期刊: Appl. Math. Comput.
• 作者: P. Tucker;J. Tyacke

On high-frequency noise scattering by aerofoils in flow

流动中机翼的高频噪声散射

• DOI: 10.1017/jfm.2013.477
• 发表时间: 2013
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: Ayton L

An analytic approach to high-frequency gust-aerofoil interaction noise in steady shear flows

稳定剪切流中高频阵风-翼型相互作用噪声的分析方法

• DOI: 10.2514/6.2014-2322
• 发表时间: 2014
• 作者: Ayton L

Modelling Velocity Correlations with LES and RANS for Prediction of Noise from Isothermal or Hot Jets

使用 LES 和 RANS 对速度相关性进行建模，以预测等温或热射流的噪声

• DOI: 10.2514/6.2016-2810
• 发表时间: 2016
• 作者: Rosa V

Interaction of turbulence with the leading-edge stagnation point of a thin aerofoil

• DOI: 10.1017/jfm.2016.326
• 发表时间: 2016-06
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: Lorna J. Ayton;N. Peake