SGER: Novel Near-Wall Thermometry Techniques with Submicron Resolution

项目简介：CTS-0439666PRINCIPAL调查员：南洋理工大学佐治亚州技术研究所：新型亚微米近壁测温技术这是一项探索性研究计划，旨在开发一种将流体温度测量到微通道壁100 nm以内的技术。我们的目标是开发和演示一种使用双场荧光测温技术来测量微通道流中距离壁面100 nm范围内100微米分辨率的水温。提出的活动的智能优点是能够以高空间分辨率非侵入性地测量微尺度设备(如微通道)中的壁温。虽然该技术在原理上测量流体中的温度，但测量体积(距离壁面100 nm)的接近程度使得可以从近壁流体温度准确地推断壁面温度。目前还没有经过验证的方法来准确测量小规模内部流动中的壁温。如果成功，建议的技术将提高分析和开发非等温冷却设备(如微通道散热器)的诊断能力。这一新诊断工具的问世将对微尺度非等温器件的研究和应用产生广泛的影响。主要的例子包括用于冷却高功率电子处理器的设备。到目前为止，还没有关于微通道内部流动的热测量。未来开发高效、高度本地化的电子冷却解决方案需要更好地了解这些类型的流动，而拟议的技术为现有的诊断增加了一个重要的工具。国际流体学会正在开发一门12小时的微纳流体学入门课程，将在流体力学应用的四年级课程中教授。该项目的结果将包括在拟议的课程中。

ABSTRACTPROPOSAL NO.: CTS-0439666PRINCIPAL INVESTIGATORS: MINAMI YODAINSTITUTION: GEORGIA INSTITUTE OF TECHNOLOGYSGER: NOVEL NEAR WALL THERMOMETRY TECHNIQUES WITH SUBMICRON RESOLUTIONThis is an exploratory research program for the development of a technique for measuring fluid temperature to within 100 nm of the wall of a micro-channel. The goal is develop and demonstrate a technique using Dual-Field Fluorescence Thermometry to measure water temperature with 100 micron resolution and within 100 nm from the wall in a micro-channel flow. The intellectual merit of the proposed activity is to enable the non-intrusive measurement of wall temperature in micro-scale devices such as micro-channels with high spatial resolution. Although the technique in principle measures temperature in the fluid, the proximity of the measuring volume (100 nm from wall) is such that the wall temperature can be accurately implied from the near wall fluid temperature. There are currently no proven ways to accurately measure the wall temperature in small-scale internal flows. If successful, the proposed techniques will increase the diagnostic capabilities for analyzing and developing non-isothermal cooling devices such as micro-channel heat sinks. Availability of this new diagnostic tool will have a broad impact on research and application of micro-scale devices that are non-isothermal. Examples principally include devices for cooling high powered electronic processors. Up to now, thermal measurements in internal micro-channel flows have been non-existent. Future development of efficient highly localized cooling solutions for electronics cooling requires improved understanding of these types of flows and the proposed technique adds an important tool to the available diagnostics. The PI is developing a 12-hour introduction to micro- and nano-fluidics to be taught in a 4th year course in applications of fluid mechanics. Results of this project will be included in the proposed course.