MRI-R2: Acquisition of a Volumetric 3-Component Velocimetry (V3V) System

MRI-R2：体积三分量测速 (V3V) 系统的采集

• 批准号: 0958668
• 负责人: Amy Lang
• 金额: $ 50.17万
• 依托单位: University of Alabama Tuscaloosa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-15 至 2012-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0958668&HistoricalAwards=false
• 关键词: MRI; R2; Acquisition; Volumetric; Component

0958668Lang"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)." A team of five faculty actively engaged in fluid dynamics research from the College of Engineering at the University of Alabama (UA) proposes to acquire a TSI V3V measurement system. The V3V system is unique, compared to planar two-dimensional and even stereoscopic particle image velocimetry (PIV) systems, because it is capable of measuring the instantaneous three-component velocity vector field within an entire fluid volume. The instrument uses a system of three cameras to track the three-dimensional coordinates of individual particles; the data are then interpolated onto a regularly spaced Cartesian grid. As a result, other three-dimensional flow properties (such as vorticity, local strain rates, and Reynolds stresses) are easily calculated from the measurements. The major advantage of the system is its ability to fully capture the velocity field spatio-temporally while only requiring limited optical access as compared to planar DPIV, thus allowing for greater insight into the flow physics for the proposed studies. UA would be the first university in the Southeast to purchase this state-of-the-art system and would become one of less than ten in the country to acquire one. The acquisition of the V3V will enable the faculty team, which has combined experience of 23 years using planar PIV systems, about 60 years with laser-based techniques, and over 80 years with optical measurement techniques, to form a new, active working group that focuses on optical diagnostic techniques in experimental fluids, aerodynamics, combustion and engines (eFACE Working Group). The V3V will provide the infrastructure cornerstone of the newly formed working collaboration.

0958668Lang“该奖项是根据 2009 年美国复苏和再投资法案（公法 111-5）提供资金的。”阿拉巴马大学 (UA) 工程学院的一个由五名积极从事流体动力学研究的教师组成的团队提议购买 TSI V3V 测量系统。与平面二维甚至立体粒子图像测速 (PIV) 系统相比，V3V 系统是独一无二的，因为它能够测量整个流体体积内的瞬时三分量速度矢量场。该仪器使用三个摄像机组成的系统来跟踪单个颗粒的三维坐标；然后将数据插值到规则间隔的笛卡尔网格上。因此，其他三维流动特性（例如涡度、局部应变率和雷诺应力）可以通过测量轻松计算出来。该系统的主要优点是它能够完全捕获时空速度场，而与平面 DPIV 相比，只需要有限的光学访问，从而可以更深入地了解所提出的研究中的流动物理学。 UA 将成为东南部第一所购买这种最先进系统的大学，并将成为全国不到十所购买该系统的大学之一。收购 V3V 将使拥有 23 年使用平面 PIV 系统经验、约 60 年激光技术经验和 80 多年光学测量技术经验的教职团队组建一个新的、活跃的工作组，专注于实验流体、空气动力学、燃烧和发动机中的光学诊断技术（eFACE 工作组）。 V3V 将为新成立的工作协作提供基础设施基石。