Multispectral infrared absorption spectroscopy for quantitative temperature measurements in axisymmetric laminar premixed sooting flames
Multispectral infrared absorption spectroscopy for quantitative temperature measurements in axisymmetric laminar premixed sooting flames
复制标题
用于轴对称层流预混烟灰火焰中定量温度测量的多光谱红外吸收光谱
DOI：
10.1016/j.csite.2021.101575
复制
发表时间：
2021-12
影响因子：
6.8
通讯作者：
Ren Wei
中科院分区：
文献类型：
--
作者：
Ma Liuhao;Duan Kun;Cheong Kin-Pang;Yuan Chaokai;Ren Wei
采用多光谱红外吸收光谱法对乙烯/空气层流预混烟炱火焰的温度分布进行了现场、非侵入、定量测量。利用1343 nm、1392 nm和2482 nm附近的可调谐分布反馈（DFB）激光器，研究了具有不同温度灵敏度的多条H2O吸收线。采用扫描波长直接吸收光谱法结合多谱线轮廓拟合的方法，实现了沿着视线方向的温度传感。这种光学方法首先进行了数值研究的代表性燃烧场的测量精度和不确定性评估在不同的噪声水平（2-10%）。在实验中，在燃烧器上方的不同高度（3-15 mm）处，在三种代表性火焰条件（当量比Φ = 1.9、2.1和2.3）下，使用不同的并流气体（N2和空气）进行光学测量。我们的测量成功地捕获了温度场，并与高温区域内的热电偶数据非常一致。当并流气体由N2改为空气时，中心火焰的温度略有上升。所提出的方法被证明是一种很有前途的燃烧诊断技术的定量温度测量的视线信息。
Multispectral infrared absorption spectroscopy was developed forin situ, non-intrusive and quantitative measurements of temperature distributions in laminar premixed ethylene/air sooting flames. Tunable distributed feedback (DFB) lasers near 1343 nm, 1392 nm and 2482 nm were used to exploit multiple H2O absorption lines with varied temperature sensitivities. Scanned-wavelength direct absorption spectroscopy combined with the multi-line profile-fitting strategy was conducted for temperature sensing along the line-of-sight. This optical method was first numerically investigated for representative combustion fields to evaluate the measurement accuracy and uncertainty under different noise levels (2–10%). In the experiment, optical measurements were performed at different heights above the burner (3–15 mm) under three representative flame conditions (equivalence ratio Φ = 1.9, 2.1 and 2.3) with different co-flow gases (N2and air). Our measurements successfully captured the temperature field and were in excellent agreement with the thermocouple data within the high-temperature region. A slight temperature rise in the central flame was quantitatively differentiated when co-flow gas was changed from N2to air. The proposed method proves to be a promising combustion diagnostic technique for quantitative temperature measurements with the line-of-sight information.
登录
查看更多内容
利用激光吸收光谱和 CFD 模拟改进层流预混火焰均匀性研究
影响因子：
3.2
作者：
Ma Liuhao;Cheong Kin-Pang;Ning Hongbo;Ren Wei
通讯作者：
Ren Wei
影响因子：
7.4
作者：
Wang Wei;Xu Lei;Yan Jiin;Wang Yu
通讯作者：
Wang Yu
影响因子：
1.9
作者：
Nils-Erik Olofsson;H. Bladh;A. Bohlin;J. Johnsson;P. Bengtsson
通讯作者：
Nils-Erik Olofsson;H. Bladh;A. Bohlin;J. Johnsson;P. Bengtsson
影响因子：
4.4
作者：
Migliorini, F.;De Iuliis, S.;Zizak, G.
通讯作者：
Zizak, G.
影响因子：
1.9
作者：
Goldenstein, Christopher S.;Schultz, Ian A.;Hanson, Ronald K.
通讯作者：
Hanson, Ronald K.