Tomographic Absorption Spectroscopy for H(2)O Transport in a Laminar Jet with Inverse Concentration Gradient.
Tomographic Absorption Spectroscopy for H(2)O Transport in a Laminar Jet with Inverse Concentration Gradient.
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DOI：
10.3390/s22165939
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发表时间：
2022-08-09
期刊：
影响因子：
3.9
通讯作者：
Ren, Wei
中科院分区：
文献类型：
--
作者：
Cheong, Kin-Pang;Shi, Dingfeng;Liu, Shaotong;Wu, Junjun;Duan, Kun;Song, Yong;Ren, Wei
关键词：
我们报告了层析吸收光谱（TAS）研究水蒸气在层流射流中输送到环境中。喷射是用压缩的干燥空气产生的，干燥空气由蜂窝和平滑的收缩喷嘴拉直。提出了一种以环境水汽为吸收源，在1368.598 nm附近的吸收谱线为吸收谱线，以反浓度梯度研究水在层流射流中的输运的TAS方案。在喷嘴上方不同高度处进行了一维层析成像，并通过计算流体动力学（CFD）模拟的预测结果进行了验证。特别地，捕获了不同高度剪切层中浓度梯度的变化。实验得到了干层流射流中水浓度的二维分布。目前的研究表明，TAS在研究气体流动的传质和标量场方面具有很大的潜力。
We report a tomographic absorption spectroscopy (TAS) study of water vapor transport in a laminar jet issuing into the ambient. The jet was generated using compressed dry air that was straightened by a honeycomb and a smooth contraction nozzle. A TAS scheme using the water vapor in the ambient as absorbing species and the absorption line near 1368.598 nm was proposed to study the H2O transport in the laminar jet with an inverse concentration gradient. One-dimensional tomography was conducted at various heights above the nozzle, and the results were validated by the predictions from computational fluid dynamics (CFD) simulations. Particularly, the variations in the concentration gradient in the shear layer at different heights were captured. The 2D distribution of water concentration in the dry laminar jet was obtained experimentally. The present study shows that TAS has great potential in the research of mass transfer and scalar field of gaseous flows.
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影响因子：
3.8
作者：
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通讯作者：
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