MRI/RUI: Acquisition of a Digital Particle Image Velocimetry System for the Study of Turbulent Flows

在新泽西学院的工程系旨在通过国家的最先进的技术收购建立研究和学习的基础。增加一个数字粒子图像测速系统将大大多样化，并加强现有的基础设施的资源提供给教师和学生。数字粒子图像测速技术已成为工业和研究领域中流动诊断技术的标准。该技术的主要吸引力在于能够以令人难以置信的精度、分辨率和速度量化平面或三维速度场。该系统的核心包括一个双头脉冲Nd：YAG激光器，高分辨率CCD数字采集包，和一个软件接口，控制所有的采集和数据处理功能。学院购置DPIV系统后将开展两项主要活动：制定能够解决工业和社会面临的与动荡有关的问题的研究计划-驱动的现象和教育改进计划，包括加强本科生实验室和流体力学课程，并增加本科生参与研究。研究计划的具体目标领域将最初集中于由于湍流和湍流多相流的量化而产生的噪声。多相流研究解决的问题将包括气泡与湍流的相互作用和工业界感兴趣的颗粒分散问题。使用DPIV，可以直接计算控制湍流输运方程的各个项，以便可以识别主导源项。此外，可以直接观察到粒子的运动和分布。这些功能最终可以验证复杂的数值模型。将DPIV系统纳入大学生实验室和流体力学课程将使学生能够更深入地了解许多流体现象。理论与设计的结合是学院学生接受均衡工程教育的基石之一。几个学生的高级设计项目的质量将大大提高，通过访问流诊断工具，如DPIV评估原型和测试创新的概念。

The engineering department at The College of New Jersey seeks to build a foundation for research and learning through the acquisition of state-of-the-art technologies. Addition of a Digital Particle Image Velocimetry system will greatly diversify and enhance the current infrastructure of resources available to faculty and students. Digital Particle Image Velocimetry has become a standard in flow diagnostic techniques in industry and research sectors. The primary attractiveness of this technique lies in the ability to quantify planar or three-dimensional velocity fields with incredible accuracy, resolution, and speed. The heart of the system consists of a dual head pulsed Nd:YAG laser, high resolution CCD digital acquisition package, and a software interface that controls all acquisition and data processing functions. Two main activities will be generated at the College upon acquisition of the DPIV system: development of a research program capable of addressing issues faced by industry and society related to turbulence-driven phenomena and an educational improvement plan consisting of the enhancement of undergraduate laboratories and fluid mechanics courses and increased involvement of undergraduates in research.Specific thrust areas to be targeted by the research program will initially focus on noise generation due to turbulent flow and the quantification of turbulent multiphase flows. Issues addressed by the multiphase flow studies will include bubble interactions with turbulence and particle dispersion problems of interest to industry. Using DPIV, individual terms of the governing turbulent transport equations can be directly calculated so that the dominant source terms can be identified. In addition, particle motions and distributions can be directly observed. These capabilities can ultimately lead to validation of complex numerical models.Incorporation of a DPIV system into undergraduate laboratories and fluid mechanics courses will allow students to gain deeper physical insight into a host of fluid phenomena. Integration of theory and design is one of the cornerstones of the well- balanced engineering education received by students at the College. The quality of several student senior design projects will be greatly enhanced through access to a flow diagnostic tool such as DPIV for evaluating prototypes and testing innovative concepts.