Combined experimental and computational study of synthetic jets injected into separated turbulent boundary layers pertinent to high-lift aerod

近年来，利用合成射流致动器来延迟和控制边界层分离的潜力引起了人们的极大兴趣，类似于在高负载条件下运行的飞机部件。然而，合成射流与受强烈逆压梯度影响的初分离湍流边界层相互作用的基本机制尚不完全清楚，因此需要寻求具有成本效益的可操作流动控制解决方案。该提案寻求为曼彻斯特大学（Manchester University）和伦敦帝国理工学院（Imperial College London）的一个联合项目提供资金，该项目将利用两所大学的互补优势和设施。该计划旨在采用实验（立体PIV和其他传统测量技术）和计算方法（LES和LES/RANS混合建模）相结合的方法来研究详细的相互作用机制，从而得出在实际环境中最优分离控制的一般有效准则。这项研究的结果将对学术界和航空航天业都有价值，后者致力于以最少的运动部件和能量输入来发展流动管理的工程解决方案。

The potential for exploiting synthetic jet actuators to delay and control boundary-layer separation in conditions akin to those on aircraft components operating in high-load conditions has attracted much interest in recent years. However, the fundamental mechanism by which synthetic jets interact with incipiently separated turbulent boundary layers subjected to strongly adverse pressure gradient is yet to be fully understood before cost-effective operational flow-control solutions can be sought. This proposal seeks funding for a joint programme of work between groups at Manchester University and Imperial College London, which would exploit complementary strengths and facilities at the two universities. The programme aims to employ a combined experimental (Stereo PIV and other conventional measurement techniques) and computational approach (LES and LES/RANS hybrid modelling) to study the detailed interaction mechanisms, so as to derive generically valid guidelines on optimal separation control in a practical setting. The outcome of the research would be of value to both the academic community and aerospace industry, the latter striving to evolve engineering solutions to flow management with a minimum of moving parts and energy input.