MRI: Acquisition of Tomographic Particle Image Velocimetry (Tomo PIV) System for Multi-Disciplinary Research

一种流动可视化的光学方法，层析粒子图像测速（Tomo PIV），测量瞬时三维（3D），三分量（3C）流速。该主要研究仪器项目支持宾夕法尼亚州立大学几个校区和其他附近机构正在进行的流体动力学研究和教育。该项目将在宾夕法尼亚州立大学校园的15名研究人员之间以及与其他机构的流体动力学研究人员之间开展新的跨学科合作。该仪器提供了前所未有的湍流物理细节，使基础研究对工程、生物、数学、物理和医学界产生重大影响。该仪器将被纳入本科课程，本科生和研究生的研究人员将获得使用高科技Tomo PIV系统的实验设计、设置、数据采集和分析的理解。研究人员将为K-12教育和推广活动提供工具，从而提高公众对科学和工程的认识，并激励学生追求STEM专业的高级学位或职业。研究人员还将让来自代表性不足群体的学生参与他们的研究。该Tomo PIV系统使各种应用领域的基础研究成为可能。一项研究将研究振荡几何上过渡和湍流边界层中相干结构的高度3D性质，并直接应用于扑翼飞行。3D Tomo PIV系统将使研究人员能够测量复杂的速度场，从而可以完全表征扑翼上旋涡结构的3D行为。另一个项目将进行基础研究，以开发降低血细胞损伤和血栓形成风险的心血管设备。Tomo PIV将使研究人员能够更好地了解三维心血管结构，以及湍流对细胞成分和表面血栓形成的影响。通过捕捉瞬时复杂的流动结构，该仪器将使研究人员能够开发增强的计算模型，通过提高对3D速度场和剪切应力的理解来验证心血管装置的设计。

An optical method of flow visualization, Tomographic Particle Image Velocimetry (Tomo PIV), measures instantaneous three-dimensional (3D), three-component (3C) flow velocity. This Major Research Instrumentation project supports ongoing research and education in fluid dynamics at several Penn State campuses and other nearby institutions. The project will enable new cross disciplinary collaborations among 15 researchers across the Penn State campuses and with fluid dynamics researchers at other institutions. The instrumentation provides unprecedented access to the details of the physics of turbulent flows, enabling fundamental research with a significant impact on the engineering, biology, mathematics, physics, and medical communities. The instrumentation will be incorporated into undergraduate courses and undergraduate and graduate student researchers will gain an understanding of experimental design, setup, data acquisition, and analysis using the high-tech Tomo PIV system. The researchers will provide tools for K-12 education and outreach activities, thereby increasing the public awareness in science and engineering and inspiring students to pursue advanced degrees or careers in STEM majors. The investigators will also engage students from underrepresented groups in their research.This Tomo PIV system enables fundamental research in a variety of application areas. One study will examine the highly 3D nature of coherent structures in transitioning and turbulent boundary layers over oscillating geometries, with direct applications to flapping flight. The 3D Tomo PIV system will enable researchers to measure the complex velocity fields so that they can completely characterize the 3D behavior of vortex structures on flapping wings. Another project will conduct fundamental research to enable the development of cardiovascular devices with reduced risk of blood cell damage and clot formation. The Tomo PIV will enable researchers to better understand 3D cardiovascular structures and the influence of turbulence on cellular components and the formation of clots on surfaces. By capturing instantaneous complex flow structures, the instrumentation will enable the researchers to develop enhanced computational models to validate cardiovascular device design through improved understanding of the 3D velocity fields and shear stresses.