EAGER: Development of prompt molecular tagging velocimetry and thermometry

EAGER：快速分子标记测速和测温技术的发展

• 批准号: 2234149
• 负责人: Philippe Bardet
• 金额: $ 22万
• 依托单位: George Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2234149&HistoricalAwards=false
• 关键词: EAGER; Development; prompt; molecular; tagging

This project aims to take advantage of the latest developments in laser diagnostics to develop a new scheme to measure heat transfers in complex flows at an unprecedented resolution. This will represent the first demonstration of the direct measurement of turbulent flow combined with temperature. The new technique will provide a tool to shed insights into this important phenomenon and will lead to the development of new models to improve the operation of many processes. For example, the ability of a fluid to transport heat away from hot surfaces directly affects the efficiency of many systems (e.g., solar panels, nuclear reactors, computer chips, electric car batteries) or affect the drag of moving bodies (e.g., naval ships, airplanes, automobiles).The main objective of the proposed work is to take advantage of the latest developments in the design of molecular tagging velocimetry (MTV) to further expand MTV to thermometry with the ability to achieve time-resolved and spatially distributed sensing of heat fluxes in turbulent boundary layers. The research will take advantage of the spectroscopic nature of MTV to select dye and measurement schemes that enable the resolution of the temperature field, instead of an inert dye. The addition of thermometry to the MTV scheme will enable for the first time to measure temperature and velocity fields in an instantaneous manner and at the smallest scales of relevance for many industrial flows. The project will demonstrate the technique in a locally heated turbulent channel flow.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目旨在利用激光诊断的最新发展，以开发一种新方案，以前所未有的分辨率测量复杂流中的热传输。 这将代表直接测量湍流与温度结合的首次演示。新技术将为您提供一种对这一重要现象的见解，并将导致开发新模型以改善许多过程的运行。 For example, the ability of a fluid to transport heat away from hot surfaces directly affects the efficiency of many systems (e.g., solar panels, nuclear reactors, computer chips, electric car batteries) or affect the drag of moving bodies (e.g., naval ships, airplanes, automobiles).The main objective of the proposed work is to take advantage of the latest developments in the design of molecular tagging velocimetry (MTV) to further将MTV扩展到温度计，具有实现湍流边界中热通量的时间分辨和空间分布的感应的能力。 这项研究将利用MTV的光谱性质选择染料和测量方案，从而使温度场的分辨率而不是惰性染料。 在MTV方案中添加热量计学将首次启用以瞬时的方式和最小相关的尺度来测量温度和速度场。该项目将在本地加热的动荡渠道流中证明该技术。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响评估标准，被认为值得通过评估。