CAREER: Flow Physics of Aerodynamic Forcing in Unsteady Environments

职业：不稳定环境中空气动力强迫的流动物理学

• 批准号: 1553970
• 负责人: Anya Jones
• 金额: $ 50.43万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-06-01 至 2021-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1553970&HistoricalAwards=false
• 关键词: CAREER; Flow; Physics; Aerodynamic; Forcing

PI: Jones, AnyaProposal Number: 1553970The proposed research is focused on the experimental investigation of the fundamental fluid dynamics phenomena that occur when a wing is subject to gusty flows. In unsteady flow, the gusts result in an additional buoyancy force (i.e., the added mass effect), as well as an unknown change in the flow structure and aerodynamic forcing due to the interactional aerodynamics. The PI has established experimental capabilities that allow her to explore these issues in detail. The results of this research could have an impact on the design of air vehicle wings and wind energy turbines. Previous work on transient flows has focused on a wing driven in unsteady motion rather than the more realistic problem of a steady wing encountering sudden disturbances. The proposal is about identifying known and unknown mechanisms and phenomena, and about designing and conducting careful experiments to elucidate the unknown. For the flow regimes with large disturbances, a framework for a low-order model of separated flow will also be constructed, completing the approach to investigating these phenomena. There are also plans to reach out to K-12 students by demonstrating that science is exciting, fun, and to leverage outreach efforts with organizations like Women in Engineering.

PI：Jones，Anya 提案编号：1553970 拟议的研究重点是对机翼受到阵风流动时发生的基本流体动力学现象进行实验研究。在非定常流动中，阵风会导致额外的浮力（即附加质量效应），以及由于相互作用的空气动力学而导致流动结构和空气动力的未知变化。 PI 已经建立了实验能力，使她能够详细探索这些问题。 这项研究的结果可能会对飞行器机翼和风能涡轮机的设计产生影响。 先前关于瞬态流的工作主要集中在非定常运动驱动的机翼上，而不是稳定机翼遇到突然扰动的更现实的问题。该提案旨在识别已知和未知的机制和现象，并设计和进行仔细的实验​​来阐明未知事物。对于扰动较大的流态，还将构建分离流低阶模型的框架，完成研究这些现象的方法。我们还计划向 K-12 学生展示科学是令人兴奋、有趣的，并利用女性工程师等组织的外展工作。