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

利用合成射流作动器来延迟和控制边界层分离的可能性在类似于高载荷条件下运行的飞机部件上引起了人们的极大兴趣。然而，合成射流与初始分离的湍流边界层相互作用的基本机制，受到强烈的逆压梯度尚未完全理解之前，可以寻求成本效益的操作流量控制解决方案。该提案寻求为曼彻斯特大学和伦敦帝国学院的团体之间的联合工作方案提供资金，该方案将利用两所大学的互补优势和设施。该方案旨在采用实验（立体PIV和其他常规测量技术）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佳分离控制的一般有效准则。研究结果将对学术界和航空航天工业都有价值，后者努力发展工程解决方案，以最少的运动部件和能量输入进行流量管理。

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.