基于波长调制光谱的非均匀流场气体参数二维分布测量
发布时间：2019-06-10 01:57
【摘要】：基于波长调制光谱方法,研究了一种实现非均匀燃烧场气体参数二维分布测量的新方法。气体参数的二维分布是通过测量激光穿过非均匀流场区域的积分吸光度并结合重建算法进行反演实现。研究了基于波长调制光谱,通过拟合谐波信号实现积分吸光度测量的方法。利用所选的7185.60cm~(-1)和7454.45cm~(-1)两条H_2O谱线,通过建立离散模型和设计光线布局,基于波长调制光谱方法和代数迭代重建算法实现了非均匀流场区域内温度场和H_2O组分浓度场的二维分布测量。重建结果表明:基于波长调制光谱的二维重建方法具有较高的重建精度,与预测值相比,温度和H_2O组分浓度的重建误差分别小于1.69%和3.05%。
[Abstract]:Based on wavelength modulation spectroscopy, a new method for measuring the two-dimensional distribution of gas parameters in non-uniform combustion field is studied. The two-dimensional distribution of gas parameters is realized by measuring the integral absorbance of laser through the non-uniform flow field and combining with the reconstruction algorithm. The method of integral absorbance measurement based on wavelength modulation spectrum and harmonic signal fitting is studied. Using the selected 7185.60 cm ~ (- 1) and 7454.45 cm ~ (- 1) H 鈮，
本文编号：2496079
[Abstract]:Based on wavelength modulation spectroscopy, a new method for measuring the two-dimensional distribution of gas parameters in non-uniform combustion field is studied. The two-dimensional distribution of gas parameters is realized by measuring the integral absorbance of laser through the non-uniform flow field and combining with the reconstruction algorithm. The method of integral absorbance measurement based on wavelength modulation spectrum and harmonic signal fitting is studied. Using the selected 7185.60 cm ~ (- 1) and 7454.45 cm ~ (- 1) H 鈮，
本文编号：2496079
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