MRI: Development of a Large-Scale Refractive-Index Matched Flow Facility

MRI：大型折射率匹配血流设备的开发

• 批准号: 0923106
• 负责人: Kenneth Christensen
• 金额: --
• 依托单位: University of Illinois at Urbana-Champaign
• 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: 2009-09-01 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0923106&HistoricalAwards=false
• 关键词: MRI; Development; Large; Scale; Refractive; MRI; Development; Large; Scale; Refractive

0923106Christensen"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."Advanced optical techniques (such as PIV, LIF and LDV) represent the most well-resolved and accurate means of experimentally documenting the physics of flows, yet there exist a wealth of practical complex flows spanning many fields of science and engineering that have yet to be rigorously explored due to inadequate optical access, including flows over complex topography (relevant to aerodynamics and geophysical phenomena, for example), within complex geometries (flow in porous media and coral reefs, turbines, etc.) and in the presence of particulates (sediment transport, nutrient transport, pollutant and aerosol dispersion, etc.). This lack of high-quality experimental data necessarily limits the design of effective models, predictive tools and/or control strategies for these important flows. It is proposed to transform the experimental study of such flows by developing a large-scale flow facility that will alleviate these debilitating issues by allowing the refractive index (RI) of the working fluid to be tailored to match that of the solid (or particulates) under study. This RI-matched (RIM) flow facility will permit Illinois researchers to render complex solid models and/or particulates optically transparent when immersed in the working fluid, thereby minimizing reflections and distortion and facilitating thorough non-intrusive experimentation. The uniqueness of this facility includes its large spatial scale (0.45 m × 0.45 m × 2.5 m test section), allowing the study of flows at relevant scales and Reynolds numbers with high temporal and spatial resolution, as well as the types of working fluids to be accommodated.

0923106Christensen“该奖项是根据2009年的《美国恢复和再投资法》（公法111-5）资助的。在复杂的几何形状（多孔介质和珊瑚礁，涡轮机等中的流动）以及组件（沉积物传输，属物转运，污染物和气溶胶分散等）中，在复杂的几何形状（流动中的流动，在多孔介质和珊瑚礁，涡轮机等中流动），包括在复杂地形上（例如，与空气动力学和地球物理现象有关的复杂形状（例如，与空气动力学和地球物理现象有关）的流动不足）。缺乏高质量的实验数据必要的限制了这些重要流动的有效模型，预测工具和/或控制策略的设计。提议通过开发大规模流动设施来改变此类流动的实验研究，该设施将通过允许量身定制工作流体的折射率（RI）来减轻这些令人衰弱的问题，以匹配所研究的固体（或细节）。这种RI匹配的（RIM）流动设施将使伊利诺伊州的研究人员能够在浸入工作流体中时使固体模型和/或详细信息在光学上透明，从而最大程度地减少了反射和失真，并支持彻底的非侵入性实验。该设施的独特性包括其较大的空间尺度（0.45 m x 0.45 m x 2.5 m的测试部分），从而可以在相关的尺度和雷诺数上研究流量，并具有较高的临时和空间分辨率，以及可以容纳的工作流体的类型。