2D reconstruction of combustion flow field temperature based on multiple absorption lines

Junling, 宋俊玲 Song; Wei, 饶 伟 Rao; Guangyu, 王广宇 Wang; Mingyuan, 辛明原 Xin

doi:10.3788/irla201948.0306004

Cited by 1 publication

(1 citation statement)

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“…Compared with contact temperature measurement methods, non-contact temperature measurement methods have the advantages of low-temperature field disruption, fast response time, and wide measurement range, and thus they have gradually replaced invasive temperature measurement methods as the mainstream methods. Song Junling 6 used tunable semiconductor laser chromatography to achieve two-dimensional distribution measurements of combustion flow field temperature with a temperature field reconstruction error of 3.96%. Xuanda Liu 7,8 used the LIBS technique 9 , analyzed the endowment elements of combustibles, selected characteristic wavelengths, and proposed a novel method for measuring two-dimensional flame temperature and emissivity distribution with an error of no more than 5% based on elemental doping and energy spectral analysis methods.…”

Section: Introductionmentioning

confidence: 99%

Measurement technology of 2-dimensional flame imaging temperature based on infrared radiation

Pei

Hao²,

Sun³

2023

AOPC 2022: Optical Sensing, Imaging, and Display Technology

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To measure flame temperatures in various complex and extreme environments, we propose a two-dimensional flame temperature measurement method based on infrared radiation. In the laboratory environment, the acetylene-oxygen premixed flame was generated by a simulated flame generation device, the two-dimensional infrared image of the flame was obtained by using a cooled infrared thermal imager, and the emissivity of the acetylene-oxygen flame was obtained by combining a colorimetric pyrometer, the atmospheric transmittance of the site is measured by using an atmospheric correction factor, a flame radiation decay transmission model was established, and the temperature calibration curve of the infrared thermal imager was combined to finally obtain two-dimensional flame temperature data. Through the temperature measurement uncertainty analysis, the temperature measurement error of the system is within 5%. The experimental results validate the feasibility of the method.

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Section: Introductionmentioning

confidence: 99%