РЕШЕНИЕ УРАВНЕНИЙ ДВИЖЕНИЯ ДВУХМЕРНОГО ВОДНОГО ПОТОКА

Abstract

The paper studies a two-dimensional water flow that flows from a non-pressure rectangular or round pipe into a wide horizontal channel. To simplify the problem, the real three-dimensional flow is modeled as a two-dimensional zone by eliminating the velocities and accelerations of liquid particles in the direction perpendicular to the flow zone. To describe the law of motion of the water flow, the equations of L. Euler for the ideal fluid are used, taking into account the continuity equations and the Bernoulli equation. Models of two-dimensional flow in the spreading zone with the degree of adequacy sufficient for practice describe the movement of water flows arising in the lower races of road drainage systems, systems of Liman irrigation, small bridges, channels of volley of water, various culverts and water-crossing facilities. The obtained dependences of the velocity distribution, depth and water flow geometry give an accuracy exceeding that known by the previously used methods both by the velocity values and by the geometry of the boundary current lines.