Influence of the nature of wave propagation on the hydraulic characteristics of channels and pipes of sewerage networks.

In the introduction, the current situation is considered with the calculation of the weight-bearing flow and the task of the study is set. Considering the laws of non-pressure movement of water, the main equations of motion are considered, and to consider the specifics of the non-pressure flow of wastewater, the influence on the solution of these equations of motion of wave structural formations on the free surface and on the surface of bottom sediments is considered. In the third section, based on the experience of operating sewerage networks, the occurrence of waves on the free surface and ridges formed on the surface of sediments is considered, taking into account the changing geometry of the flow. Equations for the boundary conditions on the free surface are proposed, which reflect the motion of wave structural formations. The interaction of fluid motion with a moving layer is described, based on considering the developing non- stationary turbulent fluctuations of the velocity and pressure field. The last section presents the main conclusions of the work. [ABSTRACT FROM AUTHOR]