SGER: Feasibility Study of a Molecular Based Approach for the Plannar Mapping of the Pressure Field within Flows

SGER：基于分子的流内压力场平面映射方法的可行性研究

• 批准号: 0649744
• 负责人: Manoochehr Koochesfahani
• 金额: --
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-10-01 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0649744&HistoricalAwards=false
• 关键词: SGER; Feasibility; Study; Molecular; Based

ABSTRACTPROPOSAL NO.: CTS-0649744PRINCIPAL INVESTIGATORS: M. KOOCHESFAHANIINSTITUTION: MICHIGAN STATE UNIVERSITYThis is an exploratory research project aimed at development of a molecular-based approach for planar, whole-field mapping of the pressure field in gas flows. The method is built on concepts behind Molecular Tagging Velocimetry (MTV) using phosphorescent molecular tracers. Instead of avoiding the detrimental quenching effects of oxygen in MTV applications, we take advantage of it in order to determine the oxygen concentration and, therefore, the local pressure in oxygen-containing gas flows. The working principle of the proposed pressure measurement approach, referred to as Molecular Tagging Manometry (MTM), is quite similar to that of pressure sensitive paints (PSP), i.e. the quenching of phosphorescence by oxygen. In PSP, the phosphorescent molecule (i.e. lumophore) is embedded in a coating that is painted on the surface of interest. In MTM, however, the lumophore is premixed in the fluid itself and its quenching by oxygen leads to a procedure to map the pressure field in the flow. The basic theoretical framework for the method is developed. However, the essential experimental complications and limitations of the approach are completely unknown and difficult to predict. As such, the exploratory work is somewhat risky. Should this project meet with success, its potential broader impact on the field can be significant. It will offer a methodology for capturing the whole-field pressure distribution within the body of a flow, a capability that has so far remained elusive.

Abstract Propopos no。：CTS-0649744原理研究人员：M。Koochesfahaniinstitution：密歇根州立大学这是一项探索性研究项目，旨在开发基于分子的平面方法，全场对气体压力场的全场映射。该方法建立在使用磷光分子示踪剂的分子标记速度法（MTV）背后的概念上。我们没有避免氧气在MTV应用中的有害淬灭作用，而是利用它来确定氧气浓度，因此是含氧气体流中的局部压力。 所提出的压力测量方法的工作原理，称为分子标记测量法（MTM），与压力敏感涂料（PSP）的工作原理非常相似，即通过氧气淬灭磷光。在PSP中，将磷光分子（即Lumophore）嵌入在感兴趣的表面上的涂层中。 然而，在MTM中，腔体在流体本身中被预混合，氧气淬灭会导致一项绘制流动压力场的过程。开发了该方法的基本理论框架。但是，该方法的基本实验并发症和局限性是完全未知且难以预测的。因此，探索性工作有些冒险。如果该项目取得成功，它对该领域的潜在广泛影响可能会很大。它将提供一种捕获流动体内全场压力分布的方法，到目前为止，这种能力仍然难以捉摸。