FLOW OF VISCOUS LIQUID FROM THE BOTTOM ADJUSTABLE HOLE OF A VERTICAL PIPELINE

The paper presents the results of the process of outflow of a viscous liquid from a vertically located pipe through a round bottom hole with an adjustable cross-section study. It has believed that the liquid is a continuous medium with a certain center of mass and completely fills the cavity of the pipeline. Assuming laminar flow of an incompressible viscous fluid, an equation has compiled that relates the speed of movement of its center of mass with the height relative to the drain hole. In addition, an analytical expression has obtained that describes the dependence of the cross-sectional parameters of the outlet on the height of a column of liquid of various viscosities. This makes it possible to control the process of practical use of the controlled liquid drainage technique.