Open channel flow with varying bed roughness.

Abstract

The distribution of velocity and boundary shear stress in a rectangular flume has been examined experimentally, and the influence of varying the bed roughness and aspect ratio assessed. Dimensionless plots of both shear stress and shear force parameters illustrate the complex way in which such parameters vary. The definition of a 'wide' channel is also examined, and a graph giving the limiting aspect ratio for different roughness conditions is presented. from ASCE Publications Abstracts