MRI: Acquisition of Particle Image Velocimetry System for Study of Bluff Body Wakes and Shock-Accelerated Flows

这项主要研究仪器(MRI)的研究建议获得一个粒子-图像-速度测量(PIV)系统来进行基本流体流动实验，作为研究和教育的一部分。PIV系统由双腔Nd-Yag激光器、用于捕捉复杂流动情况下的流态的灵敏的CCD摄像机以及专用的图像相关和分析软件组成。该系统的获得将直接影响到该大学相对较新的工程系的流体力学实验室的基础设施。流体力学领域的本科生和硕士生的研究活动将得到极大的加强。该系统将被用来了解加热的两个和三个圆柱体后面的复杂尾迹结构，作为热钝体后面流体流动研究的一部分。流动可视化和定量数据将与其他研究人员的工作进行比较，而不考虑加热量的影响。这一认识将使我们深入了解钝体在这种情况下的复杂尾迹动力学。这项研究将对具有类似流动情况的设备的设计产生直接影响，例如在换热器中。PIV系统还将用于与激波加速流动有关的研究工作。使用PIV系统的研究工作将涉及来自未被充分代表的西班牙裔人口的本科生和研究生，包括女性。PIV系统还将用于为来访的暑期学生演示汽车和飞机等物体周围的流体流动，以激励他们选择科学和工程职业。该系统将被整合到研究生和本科生的流体力学课程教学中。流体力学实验室的PIV能力将吸引该大学生物系的研究人员分析生物系统中的流体流动，从而为令人兴奋的跨学科研究打开大门。该PIV系统将是该大学和里约格兰德河谷地区唯一的此类设备。它还将推动PI和大学为该地区的本科生提供有意义的研究机会的目标。

This Major Research Instrumentation (MRI)research proposes to acquire a particle-image-velocimetry (PIV) system to conduct basic fluid flow experiments, both as part of research and education. The PIV system consists of a dual cavity Nd-Yag laser, a sensitive CCD camera to capture flow pattern in complex flow situations, and dedicated image-correlation and analysis software. The acquisition of this system will have direct impact on the infrastructure of fluid-mechanics laboratory of the relatively new engineering department of the university. The research activities of the undergraduate and master's students in fluid mechanics area will be considerably enhanced. The system will be used to understand the complex wake structure behind heated two and three cylinders as part of fluid flow study behind hot bluff bodies. The flow visualization and quantitative data will be compared to the work of other researchers without the effect of heat addition. This understanding will give insight into the complex wake dynamics of bluff bodies in such situations. The research will have direct impact on the design of devices involving similar flow situations such as in a heat exchanger. The PIV system will also be used in the research work related to shock-accelerated flows. The research work using the PIV system will involve undergraduate and graduate students, including women, from the under-represented Hispanic population. The PIV system will also be used in demonstrating fluid flow around bodies such as automobiles and airplanes for visiting summer students to motivate them to choose careers in science and engineering. The system will be integrated into the teaching of fluid mechanics courses both at graduate and undergraduate level. The PIV capability of the fluid mechanics laboratory will attract researchers from the biology department of the university in analyzing fluid flows in biological systems and thus open doors for exciting interdisciplinary research. This PIV system will be the only equipment of its kind in the university and in the Rio-Grande valley region. It will also further the PI's and the university's goal of providing meaningful research opportunities for undergraduate students of the region.