GOALI: Resonant Holographic Interferometry: Diagnostic Capabilities in Multi-Phase Flame Environments

GOALI：共振全息干涉测量：多相火焰环境中的诊断功能

• 批准号: 9707727
• 负责人: Derek Dunn-Rankin
• 金额: $ 17.3万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-01 至 2002-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9707727&HistoricalAwards=false
• 关键词: GOALI; Resonant; Holographic; Interferometry; Diagnostic

Abstract - Dunn-Rankin This is an industry-university cooperative research project between the University of California at Irvine and Metro Laser of Irvine, CA. Resonant holographic interferometry (RHI) is a laser-based diagnostic that combines the three-dimensional imaging capability of holography, the phase- sensitive detection of interferometry, and the species specificity of resonance spectroscopy. It accomplishes this by recording two simultaneous holograms at two different wavelengths, one tuned near an absorption line and the other tuned off this feature. Upon reconstruction, the resulting interference fringes correspond uniquely to the density of the species under interrogation while phase contributions from background species, thermal and pressure instabilities and optical aberrations are subtracted out. The approach has been successfully demonstrated in gas-phase combustion systems. In this effort, RHI is applied to multiphase systems for the first time. Specifically, products from droplet and spray combustion systems will be analyzed quantitatively. Now intrusive optical diagnostic techniques are commonly used in study of gas-phase combustion systems and other reacting flow systems. These methods are also being considered for incorporation in active control systems. However, most such techniques are limited to single-phase systems, making them unsuitable for many important combustion systems that use liquid fuels. It is speculated that RHI can overcome this hurdle.

摘要 - Dunn-Rankin 这是加州大学欧文分校和加州欧文市 Metro Laser 之间的产学合作研究项目。 共振全息干涉测量 (RHI) 是一种基于激光的诊断，结合了全息术的三维成像能力、干涉测量的相敏检测以及共振光谱的物种特异性。 它通过在两个不同波长记录两个同时全息图来实现这一点，一个在吸收线附近调谐，另一个则关闭此功能。 重建后，所产生的干涉条纹唯一地对应于所询问的物质的密度，同时减去背景物质的相位贡献、热和压力不稳定性以及光学像差。 该方法已在气相燃烧系统中成功得到验证。 在这项工作中，RHI 首次应用于多相系统。 具体来说，将对液滴和喷雾燃烧系统的产物进行定量分析。 现在侵入式光学诊断技术通常用于气相燃烧系统和其他反应流系统的研究。 这些方法也正在考虑纳入主动控制系统。 然而，大多数此类技术仅限于单相系统，这使得它们不适用于许多使用液体燃料的重要燃烧系统。 推测RHI可以克服这个障碍。