Development of ultra-high-resolution optical-fiber probe for the measurement of fluctuation concentration of multiple species by the discrete light-absorption spectrometric method

离散光吸收光谱法测量多组分波动浓度超高分辨率光纤探头的研制

• 批准号: 23656134
• 负责人: SAKAI Yasuhiko
• 金额: $ 2.75万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656134/
• 关键词: 流体工学; 乱流; 変動濃度; 化学反応; 吸光光度法

In this study, to investigate the mixing/reactive fields of high-Schmidt number multiple species which are typically observed in the liquid phase, the ultra-high-resolution optical-fiber probe with the resolution of micro-scale order has been developed by the discrete light-absorption spectrometric method. By using this new developed probe, in a turbulent planar liquid jet with a second-order chemical reaction, the concentrations of all chemical species are measured, and the fundamental characteristics of reactive concentration statistics are investigated and the useful data for the examination of the molecular mixing model in the PDF (Probability Density Function) method are provided. Further the interface between the turbulent and non-turbulent region is detected and the various conditional statistics in the turbulent region are measured. From these results, the mechanism of mixing of chemical species near the turbulent/non-turbulent interface is clarified.

在本研究中，为了研究液体中常见的高施密特数多组分的混合/反应场，利用离散光吸收光谱分析方法，研制了具有微尺度分辨率的超高分辨率光纤探头。利用这一新研制的探头，在具有二级化学反应的平面湍流液体射流中，测量了所有化学物种的浓度，研究了反应浓度统计的基本特征，为用概率密度函数方法检验分子混合模型提供了有用的数据。此外，检测湍流区域和非湍流区域之间的界面，并测量湍流区域中的各种条件统计量。根据这些结果，阐明了湍流/非湍流界面附近的化学物质混合的机理。

项目成果

二次反応を伴う液相二次元噴流中の条件付統計量に関する研究

伴随二阶反应的液相二维射流条件统计研究

• 发表时间: 2011
• 作者: 渡邉智昭;酒井康彦;久保貴;長田孝二;寺島修
• 通讯作者: 寺島修

Conditional Statistics of Reactive Concentrations in a Planar Liquid Jet

平面液体射流中反应浓度的条件统计

• 发表时间: 2013
• 期刊: Proc. of the 4th International Conference on Jets, Wakes and Separated Flows
• 作者: T. Watanabe;Y. Sakai;K. Nagata;O. Terashima and Y. Ito
• 通讯作者: O. Terashima and Y. Ito

Study on Conditional Statistics in Two-Dimensional Liquid Jet with the Reaction

二维液体射流反应条件统计研究

• 发表时间: 2011
• 期刊: Proc. of ASME-JSMEKSME Joint Fluids Engineering Conference 2011
• 作者: T. Watanabe;T. Kubo;H. Yasuhara;Y. Sakai;K. Nagata and O. Terashima
• 通讯作者: K. Nagata and O. Terashima

Turbulent Mixing in a Planar Liquid Jet with a Second-Order Chemical Reaction

平面液体射流中的湍流混合与二阶化学反应

• 发表时间: 2012
• 作者: T. Watanabe;Y. Sakai;K. Nagata;O. Terashima and Y. Ito
• 通讯作者: O. Terashima and Y. Ito

Visualization of Turbulent Reactive Jet by Using Direct Numerical Simulation

使用直接数值模拟可视化湍流反应射流

• 发表时间: 2013
• 期刊: International Journal of Modeling, Simulation, and Scientific Computing
• 作者: T. Watanabe;Y. Sakai;K. Nagata;O. Terashima;H. Suzuki;T. Hayase and Y. Ito
• 通讯作者: T. Hayase and Y. Ito