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.
Highlights
Возникающих в нижних бьефах дорожных дренажных систем, систем орошения, небольших мостов, каналов водоемов, различных водопропускных труб
The paper studies a two-dimensional water flow that flows from a non-pressure
the real three-dimensional flow is modeled as a two-dimensional zone by eliminating the velocities and accelerations
Summary
Возникающих в нижних бьефах дорожных дренажных систем, систем орошения, небольших мостов, каналов водоемов, различных водопропускных труб. Что основоположники теории двухмерных в плане водных потоков исходили из динамических уравнений движения идеального двухмерного открытого водного потока в форме Л. ∂ ∂y h uy Система дифференциальных уравнений в частных производных (11) описывает течение двухмерных в плане открытых стационарных потоков в горизонтальном водоводе без учета сил сопротивления потоку.
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