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Chin. Phys. B, 2020, Vol. 29(2): 024701    DOI: 10.1088/1674-1056/ab5f00

Quantitative temperature imaging at elevated pressures and in a confined space with CH4/air laminar flames by filtered Rayleigh scattering

Bo Yan(闫博)1,2,3, Li Chen(陈力)1,2, Meng Li(李猛)1,2, Shuang Chen(陈爽)1,2, Cheng Gong(龚诚)2, Fu-Rong Yang(杨富荣)1,2, Yun-Gang Wu(吴运刚)1,2, Jiang-Ning Zhou(周江宁)1,2, Jin-He Mu(母金河)1,2
1 Science and Technology on Scramjet Laboratory, Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China;
2 Facility Design and Instrumentation Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China;
3 College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
Abstract  Laminar methane/air premixed flames at different pressures in a newly developed high-pressure laminar burner are studied through Cantera simulation and filtered Rayleigh scattering (FRS). Different gas component fractions are obtained through the detailed numerical simulations. And this approach can be used to correct the FRS images of large variations in a Rayleigh cross section in different flame regimes. The temperature distribution above the flat burner is then presented without stray light interference from soot and wall reflection. Results also show that the extent of agreement with the single point measurement by the thermocouple is <6%. Finally, this study concludes that the relative uncertainty of the presented filtered Rayleigh scattering diagnostics is estimated to be below 10% in single-shot imaging.
Keywords:  filtered Rayleigh scattering      high-pressure combustion simulator      temperature measurement  
Received:  28 July 2019      Revised:  22 December 2019      Accepted manuscript online: 
PACS:  47.80.Fg (Pressure and temperature measurements)  
  47.70.Pq (Flames; combustion)  
  47.80.Jk (Flow visualization and imaging)  
  33.20.Fb (Raman and Rayleigh spectra (including optical scattering) ?)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 91641118) and the Fenglei Youth Innovation Fund of China Aerodynamics and Research Development Center, China (Grant Nos. FLYIF20160017 and PJD20180131).
Corresponding Authors:  Shuang Chen     E-mail:

Cite this article: 

Bo Yan(闫博), Li Chen(陈力), Meng Li(李猛), Shuang Chen(陈爽), Cheng Gong(龚诚), Fu-Rong Yang(杨富荣), Yun-Gang Wu(吴运刚), Jiang-Ning Zhou(周江宁), Jin-He Mu(母金河) Quantitative temperature imaging at elevated pressures and in a confined space with CH4/air laminar flames by filtered Rayleigh scattering 2020 Chin. Phys. B 29 024701

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