两级缓冲式光声池仿真设计及性能分析

doi:10.3964/j.issn.1000-0593(2023)08-2375-06

Abstract
References
Related Citation (15)

Download: PDF (4395 KB)
Export: BibTeX | EndNote (RIS)

Abstract The photoacoustic cell is where the “light heat sound” coupling occurs. The performance of photoacoustic cells directly affects the accuracy and sensitivity of the detection system. In order to improve the performance of photoacoustic cells, a two-stage buffer photoacoustic cell is proposed based on the traditional cylindrical photoacoustic cell. Through the simulation of the thermal viscous acoustic physical field interface in COMSOL software, the effects of the height and number of buffer partitions on the sound field in the photoacoustic cell are analyzed.The results show that the resonance frequency of the photoacoustic cell decreases with the increase in the number and height of buffer partitions. When the number of buffer partitions is fixed, the height of the buffer partition is greater than 11mm, and the resonance frequency of the photoacoustic cell decreases sharply with the increase of the height of the buffer partition. In the required range of photoacoustic cell resonance frequency, the decrease of the resonance frequency is conducive to the increase of photoacoustic signal amplitude; When the height of the buffer partition is fixed, the sound pressure of the photoacoustic cell decreases with the increase of the number of buffer partition; When the height of the buffer partition is between 0 and 11mm, the sound pressure value remains relatively stable; When the height of the buffer partition is greater than 11mm, the sound pressure decreases sharply with the increase of the height of the buffer partition. Regarding flow field, the velocity gradient in the left buffer cavity can be reduced by setting a buffer partition in the cavity. Although the one-stage buffer can reduce the velocity gradient to a certain extent, there is velocity fluctuation at the buffer partition. The two-stage buffer reduces the velocity gradient in the photoacoustic cell and makes the gas flow more stable. Considering the photoacoustic signal amplitude, sound pressure and velocity gradient in the photoacoustic cell, the height of the buffer partition is 11mm and the number of buffer partitions is 2.Based on the optimal parameters given, the simulation and experimental results show that the sound pressure of the two-stage buffer photoacoustic cell is 3.34×10^-5 compared with the cylindrical photoacoustic cell of the same size reduced to 3.32×10^-5, background noise from (2.83±0.11) μV decreases to (1.26±0.03) μV. The resonance frequency is reduced from 1 344 to 1 299 Hz. Although the sound pressure is reduced by 1.2%, the sound-to-noise ratio is increased by 2.22 times, and the resonance frequency is reduced by 3.3% within the range meeting the requirements so that the amplitude of the photoacoustic signal is improved to a certain extent. Overall, the two-stage buffer photoacoustic cell stabilizes the gas flow noise and reduces the fluctuation range of the flow noise. The proposed two-stage buffered photoacoustic pool provides a new idea for the optimal design of a photoacoustic pool.

Key words：Photoacoustic spectroscopy; Photoacoustic cell; Finite element analysis; Optimal design

Received: 2021-11-03 Accepted: 2023-01-31

ZTFLH:

O433.1

Cite this article:

JIN Hua-wei,WANG Hao-wei,LUO Ping, et al. Simulation Design and Performance Analysis of Two-Stage Buffer Photoacoustic Cell[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(08): 2375-2380.

URL:

https://www.gpxygpfx.com/EN/10.3964/j.issn.1000-0593(2023)08-2375-06 OR https://www.gpxygpfx.com/EN/Y2023/V43/I08/2375

[1] ZHANG Jian-feng, PAN Sun-qiang, CHEN Zhe-min, et al(张建锋, 潘孙强, 陈哲敏，等). Journal of Optoelectronics·Laser(光电子·激光), 2017, 28(2): 194.
[2] Cao Yuan, Liu Kun, Wang Ruifeng, et al. Optics Express, 2021, 29(2): 2258.
[3] JIN Hua-wei, XIE Pin-hua, HU Ren-zhi, et al(靳华伟, 谢品华, 胡仁志，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2019, 39(7): 1993.
[4] Bratu A M. Lasers in Medical Science, 2019, 34(4): 773.
[5] Popa Cristina, Bratu Ana Maria, Petrus Mioara. Microchemical Journal, 2018, 139: 196.
[6] MAO Zhi-xin, WEN Jin-yu(毛知新, 文劲宇). Power System Protection and Control(电力系统保护与控制), 2015, 43(7): 76.
[7] MA Feng-xiang, TIAN Yu, CHEN Ke, et al(马凤翔, 田宇, 陈珂，等). Acta Optica Sinica(光学学报), 2020, 40(7): 207.
[8] Gong Zhengfeng, Gao Tianli, Mei Liang，et al. Photoacoustics(光声学), 2021, 21: 100216.
[9] ZHAO Yan-dong, FANG Yong-hua, LI Yang-yu, et al(赵彦东, 方勇华, 李扬裕，等). Infrared and Laser Engineering(红外与激光工程), 2017, 46(6): 130.
[10] LI De-bin, YU Lin, YANG He-gang, et al(李德彬, 余霖, 杨和刚，等). Industrial Safety and Environmental Protection(工业安全与环保), 2019, 45(11): 40.
[11] LI Ze-hao, YANG Chun-yong, TANG Zi-hao, et al(李泽昊, 杨春勇, 唐梓豪，等). Chinese Journal of Lasers(中国激光), 2021, 48(1): 186.
[12] CHENG Gang, CAO Ya-nan, TIAN Xing, et al(程刚, 曹亚南, 田兴，等). Acta Photonica Sinica(光子学报), 2021, 50(2): 200.
[13] CHENG Gang, CAO Yuan, LIU Kun, et al(程刚, 曹渊, 刘锟，等). Acta Physica Sinica(物理学报), 2019, 68(7): 139.
[14] ZHAO Nan, LIU Yang, ZHAO Ning-yang, et al(赵南, 刘阳, 赵宁阳，等). Acta Photonica Sinica(光子学报), 2021, 50(7): 246.
[15] ZHANG Chu, PAN Hao, YIN Xiang-yu，et al(张楚，潘浩，尹翔宇，等). Chinese Journal of Quantum Electronics(量子电子学报), 2021, 38(5): 641.
[16] Jiao Yexiang, Fan Hongji, Gong Zhenfeng，et al. Applied Sciences-Basel, 2021, 11(11): 4997.
[17] Gong Zhenfeng, Chen Ke, Chen Yewei，et al. Optics Express, 2019, 27(13): 18222.
[18] Ulasevich A L, Gorelik A V, Kouzmouk A A，et al. Infrared Physics and Technology, 2013, 60: 174.
[19] Liu Kun, Jiao Xumei, Zhang Weijun，et al. Sensors and Actuators B: Chemical, 2017, 251: 632.