Author(s): Weiming Wu; Wolfgang Rodi; Thomas Wenka
Linked Author(s): Wolfgang Rodi
Keywords: No Keywords
Abstract: A 3-D numerical procedure for river flow with free surface and rough bed is presented here which uses the k-ε turbulence model as well as a finite-volume method on an adaptive, non-staggered grid for solving the full Reynolds-averaged Navier-Stokes equations. The water level is calculated with the aid of a 2-D Poisson equation derived from 2-D depth-averaged momentum equations. The test calculations for a strongly curved open channel flow and a natural river flow show that the model can predict the important features of main and secondary flows in rivers.