Single-pulse temperature measurement in turbulent flame using laser-induced O2 fluorescence

AIAA Journal ◽  
1996 ◽  
Vol 34 (3) ◽  
pp. 624-626 ◽  
Author(s):  
J. H. Grinstead ◽  
T. M. Quagliaroli ◽  
G. Laufer ◽  
J. C. McDaniel
Keyword(s):  
Temperature Measurement ◽  
Turbulent Flame ◽  
Single Pulse

Single pulse optoacoustic temperature measurement

2021 ◽  
Author(s):  
Eric Seifert ◽  
Hossameldin Abbas ◽  
Ralf Brinkmann
Keyword(s):  
Temperature Measurement ◽  
Single Pulse

Temperature measurement of turbulent flame using CT-TDLAS (computed tomography-tunable diode laser absorption spectroscopy)

2021 ◽  
pp. 2140012
Author(s):  
Min-Gyu Jeon ◽  
Jeong-Woong Hong ◽  
Deog-Hee Doh ◽  
Yoshihiro Deguchi
Keyword(s):  
Temperature Measurement ◽  
Absorption Spectroscopy ◽  
Manufacturing Process ◽  
Optical Measurement ◽  
Laser System ◽  
Turbulent Flame ◽  
Single Type ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Single Laser

In order to satisfy the requirements of high-quality and high-performance optimal material manufacturing process, it is essential to control the gas system of the manufacturing process. In the actual industry, the quality of products is improved by controlling various gases in the manufacturing process. The tunable laser absorption spectroscopy (TDLAS) technique can be measured by the temperature and concentration of target gas simultaneously. Among the more advanced technologies, CT-TDLAS is the most crucial technique for measuring temperature and concentration distributions across two-dimensional planes. This study suggests a three-dimensional useful measurement of irregular flow or exhaust gases. Furthermore, an optical measurement method has been adopted to measure temperature distribution at a cross-section of the Methane Air premixed turbulent flame. The equivalence ratio of fuel can control this system. The burner system consists of two sections (main flame, sub-flame) for a turbulent flame. In the CT-TDLAS technique, it is essential to set the wavelength for target gases. There is a limit to high-temperature measurement in temperature estimation using a single laser-specific wavelength. Therefore, compared measurement performance was made using a mixed type laser (1388 nm, 1343 nm) and a single type laser (1388 nm). The temperatures obtained by using the optical measurement results were relatively evaluated with those obtained by the thermocouples. It was confirmed that the relative error of the temperature occurred at the central position of the burner. It was about 13.33% by the mixed laser system and 38.33% by the single laser system in most close to point from the burner.

Single-pulse temperature measurement in supersonic air flow with predissociated laser-induced thermal gratings

1999 ◽  
Vol 168 (1-4) ◽  
pp. 177-182 ◽  
Author(s):  
Peter F Barker ◽  
Jay H Grinstead ◽  
Richard B Miles
Keyword(s):  
Temperature Measurement ◽  
Air Flow ◽  
Single Pulse
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