Simultaneous Measurement of Three Species Concentration Fluctuations by Light Absorption Spectrometric Method Using Pulsed Laser Diode
Simultaneous Measurement of Three Species Concentration Fluctuations by Light Absorption Spectrometric Method Using Pulsed Laser Diode
复制标题
使用脉冲激光二极管的光吸收光谱法同时测量三种物质浓度波动
DOI：
10.11395/aem.7.0_21
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Takashi Kubo
中科院分区：
文献类型：
--
作者：
N. Yonetani;T. Oguchi;Takashi Kubo
在这项研究中，我们开发了一个同时测量系统，用于测量三种物质的浓度波动的光吸收光谱法使用脉冲激光二极管。传统的方法利用卤素灯或连续激光二极管作为光源进行浓度测量。这些光源需要多单色器或分色镜，这使得这些方法相当昂贵。然而，脉冲激光二极管作为光源消除了对额外的多单色器和分色镜的需要。利用所研制的浓度测量系统测量了三种染料在轴对称湍流射流中的扩散场。为了确定我们的浓度测量的有效性，我们比较了目前的测量结果与一个单一的染料物种和以前的研究。据观察，这三种染料的浓度准确地测量本测量系统。因此，这种低成本的浓度测量系统可以被开发并应用于多种物质的浓度波动的各种同时测量中，例如在湍流反应流中。
In this study, we developed a simultaneous measurement system for measuring the concentration fluctuations of three species by the light absorption spectrometric method using pulsed laser diodes. The conventional method utilizes halogen lamps or continuous laser diodes as light sources for concentration measurements. These light sources require multimonochromators or dichroic mirrors, which makes these methods rather expensive. However, pulsed laser diodes as the light sources eliminate the need for additional multi-monochromators and dichroic mirrors. A diffusion field consisting of three dye species in an axisymmetric turbulent jet was measured using the developed concentration measurement system. To ascertain the validity of our concentration measurements, we compared the present measurement results with those of a single dye species and previous studies. It was observed that the concentrations of the three dye species were measured accurately by the present measuring system. Therefore, such low-cost concentration measurement systems can be developed and applied in various simultaneous measurements of concentration fluctuations of multiple species such as in turbulent reactive flows.