Development of dielectric barrier discharge plasma actuators for active flow control and the reduction of noise emission from a landing gear

在空气动力学中利用电磁效应进行流动控制的潜在好处是一个研究领域，在过去几年中已经产生了许多研究。这种技术的潜在好处包括若干商业和军事应用，这些都是全世界关注和投资的主题。然而，大部分的研究仍然集中在了解影响这种电流体动力（EHD）设备的性能的关键参数，因为有几个问题需要克服，然后才能将它们集成到实际应用中。运行条件对EHD致动器性能、电功率要求和对高速状态的适用性的影响（例如，在航空航天中遇到的问题）必须在将这种装置应用于实际系统之前加以解决。由于其简单性，特别考虑的EHD装置是所谓的介质阻挡放电（DBD）等离子体致动器。使用EHD作动器来减轻起落架噪声的可能性引起了庞巴迪宇航公司（BA）的高度兴趣。 这项研究的目的是开发DBD等离子体执行器技术，用于先进的流量管理系统，并建立在加拿大现有的专业知识的主题。除了继续研究等离子体致动器的物理特性外，拟议的研究还将在概念验证实验中实施这些致动器，目的是使用主动流量控制方法减少起落架的噪声排放。多伦多大学的实验工作将得到工业合作伙伴庞巴迪宇航公司的数值模拟的支持。

The potential benefits of using electromagnetic effects within aerodynamic with flow control purposes is an area of research that has generated numerous studies in the last years. Potential benefits of such technology include several commercial and military applications, which have been subject of attention and investment worldwide. However, most of the research is still focused on understanding key parameters affecting performance of such electro-hydrodynamic (EHD) devices, since there are several issues to be overcome before they can be integrated into practical applications. The effects of operating conditions on EHD actuator performance, electrical power requirements, and suitability to high-speed regimes (e.g., those encountered in aerospace) must be addressed before the application of such devices to practical systems. Due to their simplicity, an EHD device of particular consideration is the so called dielectric-barrier discharge (DBD) plasma actuator. The possibility of using EHD actuator to mitigate noise emissions from land gears has prompted high interest to Bombardier Aerospace (BA). This research aims to develop DBD plasma actuators technology for use in advanced flow management systems and to build on Canada's existing expertise on the topic. In addition to continued research on the physics of plasma actuators, the proposed research will also implement these actuators in a proof of concept experiment with the aim of reducing noise emissions from a landing gear using active flow control methodology. The experimental work at the University of Toronto will be support by numerical simulations from the industrial partner, Bombardier Aerospace.