Further insights into the dynamics and interactions of unsteady 3D vortical flows

进一步深入了解非定常 3D 涡流的动力学和相互作用

• 批准号: RGPIN-2022-04376
• 负责人: Fellouah, Hachimi
• 金额: $ 2.33万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=754437
• 关键词: Further; insights; into; dynamics; interactions

The unsteady three-dimensional (3D) flow and their interactions with streamlined and bluff bodies are omnipresent and their characterization is crucial for the understanding of various fundamental and industrial processes such as; aircraft propulsion, transportation and wind energy generation. Unsteady 3D vortical structures are essentially characterized by complex multi-physics flow phenomena and instabilities. The overarching objective of the proposed research program is to further the current fundamental knowledge on the dynamics and the physical mechanisms governing complex 3D vortical flow phenomena and their interactions with streamlined and bluff bodies. The outcome of the proposed research work would be particularly beneficial for peer researchers and expert end-users in aerospace industries (Bell Textron Canada LTÉE, Bombardier) and energy sector (Hydro Quebec, LM Wind Power Canada Inc). The proposed research program will be mainly conducted in the large wind tunnel located at the Université de Sherbrooke (UDS). It has a closed test section of 1.82 m x 1.82 m and a top speed of the air flow is around 30 m/s that can be increased to around 42 m/s in the reduced section of 1.2 m x 1.82 m. State-of-the-art flow diagnostics techniques including; Hot Wire Anemometry (HWA) and Stereoscopic Particle Image Velocimetry (PIV), will be used to elucidate the spatiotemporal dynamics of unsteady 3D turbulent structures. The effect of flow parameters such as; Reynolds number, free stream turbulence, pressure gradient, ground effect, etc., will be evaluated. Highly qualified personnel (HQP) of different levels (PhD, Master and Undergraduate students) will be extensively trained to gain advanced skills and expertise in demand from many high-technology sectors in Canada (aerospace, wind energy production, etc.). HQP will benefit from a dynamic and a stimulating working environment at the Department of Mechanical Engineering of the UDS wherein advanced training programs are offered to acquire transversal competencies.

非定常三维 (3D) 流及其与流线型和钝体的相互作用无处不在，其表征对于理解各种基础和工业过程至关重要，例如：非定常 3D 涡流结构。其本质特征是复杂的多物理流现象和不稳定性。拟议研究计划的总体目标是进一步了解控制复杂 3D 涡流现象和物理机制的当前基础知识。拟议的研究工作的结果对于航空航天工业（贝尔德事隆加拿大 LTÉE、庞巴迪）和能源部门（魁北克水电公司、LM 风力发电加拿大公司）的同行研究人员和专家最终用户特别有益。 ）拟议的研究计划将主要在位于舍布鲁克大学（UDS）的大型风洞中进行，该风洞有一个 1.82 m x 1.82 m 的封闭测试段。气流的最高速度约为 30 m/s，在 1.2 m x 1.82 m 的缩小部分中可增加至约 42 m/s 最先进的流量诊断技术，包括： ）和立体粒子图像测速（PIV），将用于阐明非定常 3D 湍流结构的时空动力学，例如流动参数的影响。如：雷诺数、自由流湍流、压力梯度、地面效应等，将广泛培训不同级别的高素质人才（HQP），以获得高级技能和专业知识。加拿大许多高科技行业（航空航天、风能生产等）的需求将受益于 UDS 机械工程系充满活力和刺激的工作环境，该系提供高级培训课程以获得横向技能。能力。