Aerodynamics of Complex Bluff Bodies in Ground Proximity

近地复杂钝体的空气动力学

• 批准号: 418477-2013
• 负责人: AgelinChaab, Martin
• 金额: $ 1.75万
• 依托单位: University of Ontario Institute of Technology
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=596373
• 关键词: Aerodynamics; Complex; Bluff; Bodies; Ground

The proposed research focuses on experimental and numerical study of aerodynamics of complex bluff bodies in ground proximity. Our inability to accurately predict aerodynamic drag and complex bluff body wakes is due to the fact that turbulent flow phenomena over complex bodies are not well understood. Therefore, the applicant is proposing a novel experimental research program to provide a comprehensive high quality data on the aerodynamics of complex bluff bodies such as pickup and trailer trucks. The proposed research will employ state-of-the-art measurement techniques to obtain high quality velocity, pressure and force data in full scale and small scale wind tunnels. Advanced data analysis techniques will then be employed to reveal the vortical structure and explore the dynamic roles of these structures in the drag production mechanism. The research will also apply computational fluid dynamics software and numerical models with varying sophistication to analyze these flows. The comprehensive high quality data, physical insight and refined numerical models will facilitate the development of cost effective drag reduction devices for existing road vehicles. In addition, it will facilitate the development of cost effective drag reduction strategies for vehicle design engineers to improve the aerodynamics of future vehicles. This will significantly improve fuel economy on vehicles with tremendous impact on the economy, environment and energy security. This research therefore has the promising potential to enhance Canada's competitiveness in the automotive industry. It also has the opportunity to nurture the next generation of engineers, researchers and the essential skills needed in Canada.

拟议的研究重点是地面接近复杂悬崖体空气动力学的实验和数值研究。我们无法准确预测空气动力的阻力和复杂的虚张声势唤醒，这是由于尚未充分了解复杂体上的湍流现象。因此，申请人正在提出一项新型的实验研究计划，以提供有关复杂悬崖车身的空气动力学（例如拾音器和拖车卡车）的全面高质量数据。拟议的研究将采用最先进的测量技术，以全尺度和小规模的风隧道获得高质量的速度，压力和力数据。然后，将采用先进的数据分析技术来揭示涡流结构并探索这些结构在阻力生产机制中的动态作用。该研究还将应用计算流体动力学软件和具有不同复杂性的数值模型来分析这些流量。全面的高质量数据，物理洞察力和精致的数值模型将有助于为现有道路车辆的成本效益减小设备开发。此外，它将促进汽车设计工程师改善未来车辆的空气动力学的成本有效减阻策略的发展。这将大大改善对经济，环境和能源安全产生巨大影响的车辆的燃油经济性。因此，这项研究具有增强加拿大在汽车行业的竞争力的有希望的潜力。它还有机会培养下一代工程师，研究人员和加拿大所需的基本技能。