Abstract
Structures formed as a result of mixing of hydrogen with air are analyzed by optical methods using detection of density non-uniformities. Methods for determination of fractal parameters for a random distribution of these non-uniformities are described, and information about the structure of gas mixing revealed is analyzed. The BOS (Background Oriented Schlieren) method is used to obtain the optical image of the formed structures and then treat by the correlation method that allows to obtain the quantitative information on the mixing. As a result, the possibility to link the characteristics of the injected gas source and the fractal parameters were demonstrated. The method can be used in the development of the non-intrusive technique for the evaluation of the gaseous system parameters based on the optical diagnostics and, potentially, for the obtaining more detailed information of the turbulence in gases.
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