The results of theoretical and experimental justifications for the application of the previously considered aspects of the theory of turbulent flows in pipelines and the analytical dependencies obtained on their basis for practical calculations are presented. It is shown that the considered hydraulic patterns are consistent with the postulates of the classical semi-empirical theory of turbulence of fluid motion in pipes, which should be considered in terms of its development. The components of the relative hydraulic thickness of the boundary layer on the walls of pipelines are considered and the parameters for their determination are obtained. The semi-empirical dependencies for determining the coefficients of hydraulic friction in pipelines with different roughness of their walls are specified. It is shown that the obtained dependencies make it possible to determine the values of the coefficients of hydraulic friction of pipelines with any types and values of roughness.
Author Biography
O. A. Tkachuk, National University of Water and Environmental Engineering
