Closure to “Shear and Velocity Distribution in Shallow Channels”

Abstract

The key words, abstract and reference "cards" for each article in this Journal represent part of the ASCE participation in the EJC information retrieval plan. The retrieval data are placed herein so that each can be cut out, placed on a 3 x 5 card and given an accession number for the user's file. The accession number is then entered on key word cards so that the user can subsequently match key words to choose the articles he wishes. Details of this program were given in an August SYNOPSIS The method developed herein for the determination of the distribution of bottom shear stresses in a shallow, symmetrical channel with a rough bottom and with a gently varying bottom curvature, is a slight extension of Prandtl's turbulence theory, taking into account the transfer of momentum across nor-mals to the bottom. For a plane bottom with a transverse slope of 30°, it appears that the shear stresses are approximately 40% higher than found by other methods. On the other hand, for cross sections with gently sloping bottoms, it is shown that the shear stress distribution can be found with sufficient accuracy by simpler methods.