中国激光, 2021, 48 (1): 0111002, 网络出版: 2021-01-13 复制并引用该论文  本文已被引 2 次  被引通知

图 & 表

图 1. 曲体束腰型光声池示意图

Fig. 1. Schematic of curved body beam waist photoacoustic cell

下载图片 查看原文

图 2. 腔体模型的二维设计

Fig. 2. Two dimensional axisymmetric physical model of photoacoustic cell

下载图片 查看原文

图 3. 曲体束腰型光声池空腔的声学模态仿真云图。(a)第一模态(197Hz); (b)第二模态(2459Hz); (c)第三模态(3050Hz); (d)第四模态(3503Hz); (e)第五模态(3842Hz); (f)第六模态(5161Hz); (g)第七模态(6380Hz); (h)第八模态(6923Hz)

Fig. 3. Acoustic modal simulation cloud images of curved body beam waist photoacoustic cell. (a) The first mode (197Hz); (b) the second mode (2459Hz); (c) the third mode (3050Hz); (d) the fourth mode (3503Hz); (e) the fifth mode (3842Hz); (f) the sixth mode (5161Hz) ; (g) the seventh mode(6380Hz); (h) the eighth mode (6923Hz)

下载图片 查看原文

图 4. 光声池的频率响应曲线

Fig. 4. Frequency response curve of photoacoustic cell

下载图片 查看原文

图 5. 光声池的细频响应曲线

Fig. 5. Simulation curve of photoacoustic cell’s fine frequency response

下载图片 查看原文

图 6. 光声池母线的声压分布曲线

Fig. 6. Sound pressure distribution curves of photoacoustic cell generatrix

下载图片 查看原文

图 7. 谐振腔长L_r和母线短半轴长a对谐振频率及声压幅值的影响。(a)短半轴长2.5mm; (b)短半轴长5mm; (c)短半轴长7.5mm; (d)谐振腔长50mm; (e)谐振腔长100mm; (f)谐振腔长150mm

Fig. 7. Influences of resonant cavity length L_r and semiminor axis length a on resonance frequency and sound pressure amplitude. (a) Semiminor axis length is 2.5mm; (b)semiminor axis length is 5mm; (c)semiminor axis length is 7.5mm; (d)resonant cavity length is 50mm; (e)resonant cavity length is 100mm; (f)resonant cavity length is 150mm

下载图片 查看原文

图 8. 离心率e对谐振频率和声压幅值的影响

Fig. 8. Effects of eccentricity e on resonance frequency and sound pressure amplitude

下载图片 查看原文

图 9. 不同离心率e下,曲体束腰型光声池频率响应曲线的演化图。(a)e→+∞;(b)e=20;(c)e=10;(d)e=5

Fig. 9. Evolution of frequency response curve of curved beam waist photoacoustic cell. (a)e→+∞; (b)e=20; (c)e=10; (d)e=5

下载图片 查看原文

表 1曲体束腰型光声池的基本参数

Table1. Basic parameters of curved body beam waist photoacoustic cell

Buffer chamber diameter Db/mm Buffer cavity length Lb/mm Resonant cavity length Lr/mm Semi-short axis length a/mm Eccentricity e 40 50 100 2.5 7.14

查看原文

表 2大气条件下氮气的气体参数^[23](T=293 K,p=1013 hPa)

Table2. Gas parameters of N₂ under atmospheric conditions^[23] (T=293 K, p=1013 hPa)

Parameter Value Density/(kg·m-3) 1.15 Speed of sound/(m·s-1) 343 Dynamic viscosity/(Pa·s) 1.76×10-5 Thermal conductivity/(W·m-1·K-1) 2.56×10-2 Constant volume specific heat capacity/(J·kg-1·K-1) 0.741×103 Constant pressure specific heat capacity/(J·kg-1·K-1) 1.038×103

查看原文

表 3光声池的基本参数

Table3. Basic parameters of photoacoustic cell

Buffer chamber diameter Db/mm Buffer cavity length Lb/mm Resonant cavity length Lr/mm Semi-short axis length a/mm Eccentricity e 40 50 100 2.5 Inf.

查看原文

李泽昊, 杨春勇, 唐梓豪, 彭苗苗, 倪文军, 郭连波, 侯金, 陈少平. 曲体束腰型光声池的设计及性能分析[J]. 中国激光, 2021, 48(1): 0111002. Zehao Li, Chunyong Yang, Zihao Tang, Miaomiao Peng, Wenjun Ni, Lianbo Guo, Jin Hou, Shaoping Chen. Design and Performance Analysis of Curved Body and Girdled Waist Photoacoustic Cells[J]. Chinese Journal of Lasers, 2021, 48(1): 0111002.