Abstract
Theory of turbulence is an important part of the open flow dynamics. The interes in the research of experimental turbulence increased with the development of mathematical modeling of open flows and the need to obtain materials for the parameters of turbulence models, with numerical modeling of turbulent flows. The purpose of this research was to study characteristics of the turbulent flow during the planned expansion with the formation of whirlpool zones and to obtain practical recommendations for the analysis and calculation of the kinematic structure of such flows. There was used an experimental research method. Experimental graphs for determining the turbulent shear stresses at the interface were obtained and dependences were given for determining the coefficients of turbulent mixing. There were identified zones of intense pulsation of speed which is of a practical interest and allows to predict an increase in the erosion ability of the flow in these places and to obtain recommendations for strengthening the channel and extinguishing energy in the downstream. The results allow us to use this data in further study of the conditions of origination, development and decaying of turbulence, to consider the mechanism of turbulence of energy transformation.
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