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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.5

ISSN 印刷: 1065-3090
ISSN オンライン: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.2017019741
pages 25-40

TALBOT IMAGES DEFLECTION TOMOGRAPHY OF TEMPERATURE DISTRIBUTION IN PREMIXED METHANE−AIR FLAME OF COMPLEX STRUCTURE

Oleg G. Penyazkov
Laboratory of Physical-Chemical Hydrodynamics, Department of Physics and Chemistry of Nonequilibrium Media A.V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, Minsk, Belarus
Ilya N. Shatan
A.V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, Republic of Belarus

要約

The results of probe measurements of radiation deflection angles by the method of Talbot images were used for tomographic reconstruction of the refractive index and temperature distribution in a methane−air flame of complex structure. The projection data were registered in different viewing directions by rotating the reacting gas flow forming system around the vertical axis. The filtered back projection algorithm was used to reconstruct the refractive index distribution. The temperature calculations were based on the disregard of the change in the flame composition. The results show that the optical diagnostic by Talbot images can be used to measure the temperature field in asymmetric reacting gas flows.


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