Two-dimensional temperature measurement in a high temperature and high pressure combustor using CT-TDLAS with a wide scanning laser at 1335-1375nm
Wang, Zhenzhen Xi’an Jiaotong University|Tokushima University
Zhou, Wangzheng Xi’an Jiaotong University
Kamimoto, Takahiro Tokushima University
Yan, Junjie Xi’an Jiaotong University|Tokushima University
Yao, Shunchun South China University of Technology
Girase, Krunal Tokushima University
Jeon, Min-Gyu Tokushima University
Two-dimensional (2D) temperature measurement
High temperature and high pressure field
Tunable diode laser absorption spectroscopy (TDLAS)
Computed tomography (CT)
Tunable diode laser absorption spectroscopy (TDLAS) technology is a developing method for temperature and species concentration measurements with the features of non-contact, high precision, high sensitivity, etc. The difficulty of two-dimensional (2D) temperature measurement in actual combustors has not yet been solved because of pressure broadening of absorption spectra, optical accessibility, etc. In this study, the combination of computed tomography (CT) and TDLAS with a wide scanning laser at 1335-1375nm has been applied to a combustor for 2D temperature measurement in high temperature of 300-2000K and high pressure of 0.1-2.5MPa condition. An external cavity type laser diode with wide wavelength range scanning at 1335-1375nm was used to evaluate the broadened H2O absorption spectra due to the high temperature and high pressure effect. The spectroscopic database in high temperature of 300-2000K and high pressure of 0.1-5.0MPa condition has been revised to improve the accuracy for temperature quantitative analysis. CT reconstruction accuracy was also evaluated in different cases, which presented the consistent temperature distribution between CT reconstruction and assumed distributions. The spatial and temporal distributions of temperature in the high temperature and high pressure combustor were measured successfully by CT-TDLAS using the revised spectroscopic database.
Society for Applied Spectroscopy|SAGE Publishing
Zhenzhen Wang, Wangzheng Zhou, Takahiro Kamimoto, Yoshihiro Deguchi, Junjie Yan, Shunchun Yao, Krunal Girase, Min-Gyu Jeon, Yoshiyuki Kidoguchi, Yuzuru Nada, Two-Dimensional Temperature Measurement in a High-Temperature and High-Pressure Combustor Using Computed Tomography Tunable Diode Laser Absorption Spectroscopy (CT-TDLAS) with a Wide-Scanning Laser at 1335–1375 nm, Applied Spectroscopy (Volume: 74 issue: 2) pp. 210-222. Copyright ©2019 SAGE Publications. DOI: 10.1177/0003702819888214.
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