Abstract:In order to explore the application of laser absorption spectroscopy in the non-uniform flow, a new strategy that provides quantitative measurements of gas parameters in non-uniform environments are put forward. After evaluating the range of temperature in the field and choosing the appropriate transitions whose strengths that scale linearly with temperature, the H2O mole-fraction-weighted path-average temperature and geometric path-average H2O mole fraction can be quantitatively measured. The simulated results from two-temperature and Gaussian-temperature distribution model show the availability and reliability of this method. Compared with theoretical value, the relative errors of measured results in the two-temperature distribution model are 0.82% and 1.10% while the most relative errors in the Gaussian-temperature distribution model are 0.9% and 3.6%.
Key words:Laser absorption spectroscopy; Non-uniform flow; Gas parameters; Quantitative measurement
屈东胜,洪延姬,王广宇,王明东,潘 虎. 基于激光吸收光谱技术的非均匀流场气体参数测量研究[J]. 光谱学与光谱分析, 2017, 37(07): 2004-2009.
QU Dong-sheng, HONG Yan-ji, WANG Guang-yu, WANG Ming-dong, PAN Hu. Measurements of Gas Parameters Based on the Laser Absorption Spectroscopy in Non-Uniform Flow. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(07): 2004-2009.
[1] Hanson R K. Proceedings of the Combustion Institute, 2011, 33: 1.
[2] Spearrin R M, Davidson D F, Jeffries J B, et al. Proceedings of the Combustion Institute, 2015, 35: 3645.
[3] Lyle K H, Jeffries J B, Hanson R K. AIAA Journal, 2007, 45(09): 2213.
[4] Schultz I A, Goldenstein C S, Spearrin R M, et al. Journal of Propulsion and Power, 2014, 30(6): 1595.
[5] Sun K, Sur R, Chao X, et al. Proceedings of the Combustion Institute, 2013, 34: 3593.
[6] Bolshov M A, Kuritsyn Y A,Romanovskii Y V. Spectrochimica Acta Part B, 2015, 106: 45.
[7] Wang J, Maiorov M, Jeffries J B, et al. Measurement Science and Technology, 2000, 11, 1576.
[8] Chang L S, Strand C L, Jeffries J B, et al. AIAA Journal, 2011, 49(12): 2783.
[9] Sanders S T, Wang J, Jeffries J B, et al. Applied Optics, 2001, 40(24): 4404.
[10] Liu X, Jeffries J B, Hanson R K. AIAA Journal, 2007, 45(2): 411.
[11] Zhang G L, Liu J G, Kan R F, et al. Chinese Physics B, 2014, 23(12): 124207.
[12] Rothman L S, Gordon I E, Babikov Y, et al. Journal of Quantitative Spectroscopy & Radiative Transfer, 2013, 130: 4.