考虑重力及离心力的溢流坝反弧段紊流边界层动量积分方程

Momentum Integral Equation of Turbulent Boundary Layer on Ogree Section of Spillway Dam in Considering the Gravity and Centrifugal Force

分析了溢流坝反弧段水流的运动特征及影响边界层发展的主要因素,认为溢流反弧水流边界层与绕流边界层是不同的。在边界层外水流为有势流动的假设条件下,考虑重力、离心力作用及自由水面存在的影响,提出了溢流坝反弧段紊流边界层动量积分方程式,可用于分析计算溢流坝反弧段边界层的发展厚度。

This paper analyzes water flow movement behaviors on ogree section of spillway dam and the primary factors affecting the development of the boundary layer,and it is considered that the boundary layer of spillway ogree flow is different from the circumfluence boundary layer. Under the assumed condition that the flow beyond the boundary layer is potential, this paper proposes the momentum integral equation of turbulent boundary layer in considering the gravity, centrifugal force and effects of the flow surface, the equation can he used to calculate the dam development thickness of boundary layer on the ogree section of spillway dam.