Propeller Aerodynamic Interaction and Noise Characteristics in Distributed Propulsion

分布式推进中螺旋桨气动相互作用和噪声特性

• 批准号: 2615359
• 金额: --
• 依托单位: University of Bristol
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2615359
• 关键词: Propeller; Aerodynamic; Interaction; Noise; Characteristics

The transportation technology has greatly advanced in the past two decades, leading to rapid development in the area of Urban Air Mobility (UAM), which sees the unmanned aerial vehicles and short-haul electric aircrafts to gradually become an integral part of our daily life. The UAM market is currently projected to reach an industrial value of 1.5 trillion USD by 2040. Compared to the research efforts into conventional aircraft aerodynamics and aeroacoustics, research into electrical distribution propulsion (DP) and electrical Vertical Take-Off and Landing (eVTOL) which are the promising green (i.e. zero-emission) configurations for UAM, remains relatively scarce. This proposed research project aims to focus on the flow interactions associated with the distributed propulsion system, as well as their influence on the aerodynamically generated noise by implementing experimental measurements and numerical simulations. The study will focus on two main areas of interest: (a) the rotor-to-rotor interaction; (b) the rotor to airframe interaction. With the comprehensive and high-fidelity flow field and noise information, the project will significantly improve our knowledge and understanding of distribution propulsion configurations. Therefore, the project is timely and essential as U.K. embraces on its 'Build Back Greener' initiatives, including the FlightZero and NetZero programmes. The project leverages upon the strong numerical and experimental expertise in Bristol. The numerical simulations will be carried out using Lattice Boltzman method (LBM) for scale-resolved and efficient simulation of complex geometrical configurations (i.e., multi-propeller) and the experimental measurements will be performed in the aeroacoustic wind tunnel with highly instrumented set-up to unravel the fundamental flow and noise generation mechanisms. The project is also aligned well with several large-scale EPSRC and H2020 research initiatives in novel propulsion configurations such as ENODISE and SilentProp, which the study will learn and work with the partners in those projects for greater impact and dissemination of the results, leading to prospective project collaborations. Moreover, from the obtained results, three to four high quality research papers are expected to be published on the leading journals, as well as presented in domestic and international conferences and seminars to further explore potential opportunities to collaborate with interested institutions and industrial partners.Aims and Objectives: The proposed research will shed light on understanding of the aerodynamic interaction and the related noise characteristics in DP configurations, and are expected to:1. Establish an extensive set of numerical and experimental datasets in DP system with a focus on blade-to-blade and blade-to-airframe interactions.2. Provide assessment of the Lattice-Boltzman based solver on complex configurations.3. Investigate and understand the modifications of the near-field aerodynamics and their physical relation to the radiated noise with varying parameters in DP configurations. Research Methodologies: The project will utilise the state-of-the-art numerical tool and experimental techniques. For numerical simulations, wall-resolved simulations based on LBM will be carried out. The solver has inherent advantages on complex configurations. The experiments will be carried out in the national wind tunnel facility at Bristol. The instrumented airframes and the noise localisation arrays are designed and built with sensor techniques developed in-house. Alignment with EPSRC: The research falls under Aerodynamics and Fluid Dynamics which is a strategic research area under EPSRC engineering theme. Project Partners: Vertical Aerospace acts as an industrial advisor of the project to provide guidance to the DP configurations with an industrial perspective.

在过去的二十年中，运输技术已经大大发展，导致城市空气流动（UAM）领域的快速发展，这使无人机和短途电动飞机逐渐成为我们日常生活中不可或缺的一部分。 The UAM market is currently projected to reach an industrial value of 1.5 trillion USD by 2040. Compared to the research efforts into conventional aircraft aerodynamics and aeroacoustics, research into electrical distribution propulsion (DP) and electrical Vertical Take-Off and Landing (eVTOL) which are the promising green (i.e. zero-emission) configurations for UAM, remains relatively scarce.该提出的研究项目旨在专注于与分布式推进系统相关的流相互作用，以及它们通过实施实验测量和数值模拟而对空气动力学产生的噪声的影响。该研究将重点关注两个主要领域：（a）转子向旋转的相互作用； （b）转子到机身相互作用。借助全面且高保真的流场和噪声信息，该项目将显着提高我们对分配推进配置的了解和理解。因此，该项目是及时和必不可少的，因为英国在其“ Bace Back Greener”计划中所包含的，包括FlightZero和Netzero计划。该项目利用了布里斯托尔强大的数值和实验专业知识。数值模拟将使用晶格玻尔兹曼方法（LBM）进行，以进行比例分辨，有效的复杂几何配置（即多型螺旋桨）的模拟，并将在高度仪器的气管风隧道中进行实验测量，并使用高度仪器的式风道进行，以拆除基本的流量和噪声机制。该项目还与新型推进配置（例如Enodise and SilentProp）中的几项大型EPSRC和H2020研究计划保持一致，该研究将与这些项目中的合作伙伴学习和合作，以更大的影响和传播结果，从而导致预期的项目合作。 Moreover, from the obtained results, three to four high quality research papers are expected to be published on the leading journals, as well as presented in domestic and international conferences and seminars to further explore potential opportunities to collaborate with interested institutions and industrial partners.Aims and Objectives: The proposed research will shed light on understanding of the aerodynamic interaction and the related noise characteristics in DP configurations, and are expected to:1.在DP系统中建立一组广泛的数值和实验数据集，重点关注叶片至叶片和叶片到叶片 - 到空间相互作用2。在复杂配置上提供基于晶格玻尔兹曼的求解器的评估3。研究并了解近场空气动力学的修改及其与辐射噪声的物理关系，而DP构型中的参数有所不同。研究方法：该项目将利用最新的数值工具和实验技术。对于数值模拟，将进行基于LBM的壁分辨模拟。求解器在复杂配置上具有固有的优势。实验将在布里斯托尔的国家风洞设施中进行。仪器机身和噪声定位阵列是通过内部开发的传感器技术设计和构建的。与EPSRC的一致性：研究属于空气动力学和流体动力学，这是EPSRC工程主题下的战略研究领域。项目合作伙伴：垂直航空航天充当该项目的工业顾问，以用工业角度为DP配置提供指导。