ISSN 2079-3537      

 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                             





Scientific Visualization, 2019, volume 11, number 4, pages 130 - 139, DOI: 10.26583/sv.11.4.11

Optical diagnostics of temperature field of an axisymmetric flame

Authors: Yu.N.  Dubnishchev1,,C,D, V.A.  Arbuzov2,A,C, E.V.  Arbuzov3,B,C, O.S.  Zolotukhina4,C, V.V.  Lukashov5,A

A Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences

B Sobolev Institute of Mathematics of the Siberian Branch of the Russian Academy of Sciences

C Novosibirsk State Technical University

D Technological Design Institute of Scientific Instrument Engineering of the Siberian Branch of the Russian Academy of Sciences

1 ORCID: 0000-0001-7874-039X, dubnistchev@itp.nsc.ru

2 ORCID: 0000-0003-2404-326X, arbuzov@itp.nsc.ru

3 ORCID: 0000-0001-9488-8650 , arbuzov@math.nsc.ru

4 ORCID: 0000-0003-3486-4459 , melexinaolga17@yandex.ru

5 ORCID: 0000-0001-8178-7607, luka@itp.nsc.ru

 

Abstract

The structure of the temperature field of an axisymmetric flame using an example of a candle, spiritlamp, and propane-air torch was studied. The optical diagnostics adapted to the study of combustion problems is based on the visualization by methods of Hilbert-optics of phase disturbances induced by the medium under study in a probe light field. The diagnostic complex is implemented on the basis of the IAB463M device with modified blocks of optical filtration, light source, registration and information processing. The dynamic phase structure of the candle flame and spiritlamp was visualized as a classic object for approbation the diagnostic method. The dynamic phase structure of the propane-air torch was investigated. The temperature was measured using thermocouples at the reference points. The phase function was restored on axisymmetric sections from the obtained hilbertograms, and the temperature field of flame was reconstructed using the inverse Abel transform.

 

Keywords: optical diagnostics of flames, propane-air flame, Hilbert-optics.