Two-dye two-color laser-induced fluorescence spectroscopy on droplets of green solvent water/ethanol mixtures for thermometry and mixture composition

IF 2.3 3区工程技术 Q2 ENGINEERING, MECHANICAL

Experiments in Fluids Pub Date : 2024-08-20 DOI:10.1007/s00348-024-03868-z

Hannah Ulrich, Richard Weiß, Lars Zigan

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引用次数: 0

Abstract

This work shows new insights on the application of two-color laser-induced-fluorescence (2c-LIF) thermometry in a droplet chain. A two-dye mixture is used in ethanol, water and ethanol/water mixtures in order to reach a high-temperature sensitivity and avoid the detection of lasing effects in the droplets. Various droplet sizes are recorded in regard to the limitation of the detection system for very small micrometric droplets. The breakup of a droplet chain is measured to assess the spectral detection system in applications with liquid structures of different sizes. Additionally, a proposal to expand the 2c-LIF application for studying ethanol/water droplets regarding mixture composition with a third color channel is presented. Forming two intensity ratios, the spectra can be used to obtain information on the mixture composition of the solvent. Measurements in different ethanol/water mixtures containing 0–100 vol% water are evaluated to show this possibility.

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在绿色溶剂水/乙醇混合物液滴上进行双染双色激光诱导荧光光谱分析，以测定温度和混合物成分

这项工作展示了在液滴链中应用双色激光诱导荧光（2c-LIF）测温法的新见解。在乙醇、水和乙醇/水混合物中使用了双色染料混合物，以达到高温灵敏度并避免检测液滴中的激光效应。针对检测系统对极小微米级液滴的限制，记录了各种液滴大小。测量液滴链的断裂情况，以评估光谱检测系统在不同尺寸液体结构中的应用。此外，还提出了一项建议，利用第三个颜色通道扩展 2c-LIF 的应用，以研究乙醇/水液滴的混合物成分。形成两个强度比的光谱可用于获取有关溶剂混合物成分的信息。对含水量为 0-100 Vol% 的不同乙醇/水混合物的测量结果进行了评估，以说明这种可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Experiments in Fluids 工程技术-工程：机械

CiteScore

5.10

自引率

12.50%

发文量

157

审稿时长

3.8 months

期刊介绍： Experiments in Fluids examines the advancement, extension, and improvement of new techniques of flow measurement. The journal also publishes contributions that employ existing experimental techniques to gain an understanding of the underlying flow physics in the areas of turbulence, aerodynamics, hydrodynamics, convective heat transfer, combustion, turbomachinery, multi-phase flows, and chemical, biological and geological flows. In addition, readers will find papers that report on investigations combining experimental and analytical/numerical approaches.