Özet:

Knowledge on the internal structure of the flame is very important for the study and optimization of the combustion processes. The direct flame probing involves great difficulties because of the usually aggressive nature of the environment studied and due to inevitable perturbation of combustion processes by probing devices. Efficient alternatives are supplied by non-contact optical methods in which the flame structure can be recovered via the spatial distribution of the radiation passed through the flame. In this situation, the phase distribution of the transmitted radiation is especially informative, in particular, for an optically dense (not fully transparent to its own radiation) flame. The paper describes a speckle-interferometry technique for registration of the probe radiation phase and related approaches to extracting information on the spatial inhomogeneity of the torch. Application of the high-speed single-frame measurement techniques and special handling tomographic procedures enable to determine the spatial and temporal distribution of the refractive index in the combustion zone on which basis it is possible to identify the structure of the flame. As an example, results of a study of the stationary combustion of the medical paraffin droplets are presented. The data obtained can be used for increase of the combustion efficiency and reduction of fuel consumption. Author Biographies Андрей Юрьевич Попов, Odessa I. I. Mechnikov National University Dvorianska 2, Odessa, Ukraine, 65082 Candidate of Physical and Mathematical Sciences, Senior Researcher, Head of Laboratory Laboratory of applied physics and computer technologies Research Institute of Physics

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