CAREER: Flow Physics of Aerodynamic Forcing in Unsteady Environments

PI：Jones，Anya Proposal Numbers：1553970拟议的研究集中在对机翼受到阵风流动时发生的基本流体动力学现象的实验研究。在非定常流动中，阵风导致附加浮力(即附加质量效应)，以及由于相互作用的空气动力学导致流动结构和气动强迫的未知变化。PI已经建立了实验能力，使她能够详细地探索这些问题。这项研究的结果可能对飞行器机翼和风能涡轮机的设计产生影响。以前关于瞬变流动的研究主要集中在非定常运动的机翼上，而不是定常机翼遇到突然扰动这一更现实的问题。这项提议是关于识别已知和未知的机制和现象，以及关于设计和进行仔细的实验来阐明未知的。对于具有大扰动的流型，还将建立分离流低阶模型的框架，从而完善了研究这些现象的方法。还计划通过展示科学是令人兴奋的、有趣的来接触K-12学生，并利用与女性工程等组织的外联努力。

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.