On the Velocity Defect Law of Open Channel Flow

Abstract

This paper describes the theoretical procedures for deriving a velocity defect law from the equations of motion and energy for turbulent mean flows in open channels, and the verification of the theoretical results from the experimental data of velocity distribution. Furthermore, by the use of the velocity defect law obtained and the boundary conditions imposed in the region near the wall, the velocity profile of turbulent mean flows in open channels and the mean velocity formula are presented.