IDR - Digital luminescent particle image barometry thermometry and velocimetry - DLPIBTV

IDR - 数字发光粒子图像气压测温测速 - DLPIBTV

• 批准号: 0929864
• 负责人: Dana Dabiri
• 金额: $ 85万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0929864&HistoricalAwards=false
• 关键词: IDR; Digital; luminescent; particle; image

0929864Dabiri Turbulent fluid flow is ubiquitous and important in a wide array of technological, environmental and biological situations. Our understanding of and, in turn, our ability to analyze and predict such flow is limited. This research seeks to develop new experimental techniques that will allow simultaneous measurement of local and instantaneous fluid velocities, pressures, and temperatures in turbulent convective flows; key elements in advancing our ability to understand and manipulate this complex phenomena.Intellectual Merit: The proposed technique involves fabrication of particles that are loaded with pressure- and temperature-sensitive dyes. The particles are sufficiently small as to follow the instantaneous velocities of the fluid into which they are introduced, and are simultaneously illuminated with appropriate optical sources to excite the various dyes. The fluorescent responses of the dyes will be monitored, and related to the instantaneous temperatures and pressures of the particles. Simultaneously, instantaneous fluid velocities will be determined using a laser particle image velocimetry technique. The data collected are expected to be particularly relevant to the future development of predictive models for turbulent, single phase, nonisothermal fluid flow. A multidisciplinary team of investigators with backgrounds in Chemistry, Materials Engineering, and Fluid Dynamics will be involved in the design of the pertinent dyes, the particle synthesis, and the construction of the associated laser-based measurement methodologies.Broader Impact: This research addresses longstanding challenges in fluid dynamics and, as such, will address related issues in environmental, energy, transportation, biomedical, and biological applications. The research will be integrated into the core curricula at the PIs institutions. A new graduate level experimental methods class will be developed at the University of Washington, based in large part upon the proposed research. Recruitment of graduate students from underrepresented groups will be included, leveraging existing programs.

[0929864] dabiri湍流流动在广泛的技术、环境和生物状况中无处不在且重要。我们对这种流动的理解，以及我们分析和预测这种流动的能力是有限的。本研究旨在开发新的实验技术，允许同时测量湍流对流中的局部和瞬时流体速度，压力和温度；提高我们理解和操纵这一复杂现象能力的关键因素。智力优势：提出的技术包括制造装载压力和温度敏感染料的颗粒。这些粒子足够小，可以跟随它们被引入的流体的瞬时速度，同时用适当的光源照射以激发各种染料。染料的荧光反应将被监测，并与粒子的瞬时温度和压力有关。同时，将使用激光粒子图像测速技术确定瞬时流体速度。所收集的数据预计将与湍流、单相、非等温流体流动的预测模型的未来发展特别相关。由具有化学、材料工程和流体动力学背景的多学科研究人员组成的团队将参与相关染料的设计、颗粒合成和相关激光测量方法的构建。更广泛的影响：这项研究解决了流体动力学中长期存在的挑战，因此，将解决环境、能源、交通、生物医学和生物应用方面的相关问题。该研究将被纳入pi机构的核心课程。华盛顿大学将开设一门新的研究生水平的实验方法课程，该课程在很大程度上是基于所提议的研究。将包括利用现有项目，从代表性不足的群体中招募研究生。