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石英增强光声光谱中气体湍流的影响：全面的流场分析

Effect of gas turbulence in quartz-enhanced photoacoustic spectroscopy: A comprehensive flow field analysis.

作者信息

Zifarelli Andrea, Negro Giuseppe, Mongelli Lavinia A, Sampaolo Angelo, Ranieri Ezio, Dong Lei, Wu Hongpeng, Patimisco Pietro, Gonnella Giuseppe, Spagnolo Vincenzo

机构信息

State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China.

PolySense Lab-Dipartimento Interateneo di Fisica, Politecnico and University of Bari, Via Amendola 173, Bari I-70126, Italy.

出版信息

Photoacoustics. 2024 Jun 10;38:100625. doi: 10.1016/j.pacs.2024.100625. eCollection 2024 Aug.

DOI:10.1016/j.pacs.2024.100625
PMID:38974142
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11225355/
Abstract

Here we present a computational and experimental fluid dynamics study for the characterization of the flow field within the gas chamber of a Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS) sensor, at different flow rates at the inlet of the chamber. The transition from laminar to turbulent regime is ruled both by the inlet flow conditions and dimension of the gas chamber. The study shows how the distribution of the flow field in the chamber can influence the QEPAS sensor sensitivity, at different operating pressures. When turbulences and eddies are generated within the gas chamber, the efficiency of photoacoustic generation is significantly altered.

摘要

在此，我们进行了一项计算流体动力学和实验流体动力学研究，以表征石英增强光声光谱（QEPAS）传感器气室内在不同进气流量下的流场。从层流到湍流状态的转变既受进气流动条件的影响，也受气室尺寸的影响。该研究表明，在不同的工作压力下，气室内流场的分布会如何影响QEPAS传感器的灵敏度。当气室内产生湍流和涡流时，光声产生的效率会显著改变。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/64e30002196d/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/1c2282111ccf/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/32c61ee0da96/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/732c92288519/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/f5a289c52cb2/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/69bb952932ec/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/788cb21b2b0e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/d60094913f97/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/5a5b6f1a78e5/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/290474af8c97/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/64e30002196d/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/1c2282111ccf/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/32c61ee0da96/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/732c92288519/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/f5a289c52cb2/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/69bb952932ec/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/788cb21b2b0e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/d60094913f97/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/5a5b6f1a78e5/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/290474af8c97/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/53e4/11225355/64e30002196d/gr10.jpg

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