1999/06/25 by Z. Mei, Mei, Z., A. J. Roberts +3
Physics and Astronomy · #FOS: Physical sciences #Pattern Formation and Solitons (nlin.PS) #nlin.PS #patt-sol
paper · pdf · doi:10.48550/arxiv.patt-sol/9907001
30 pages, LaTeX with hyperref
arxiv created 1999/06/25 · arxiv updated 2009/11/30
Consider the dynamics of turbulent flow in rivers, estuaries and floods. Based on the widely used k-epsilon model for turbulence, we use the techniques of centre manifold theory to derive dynamical models for the evolution of the water depth and of vertically averaged flow velocity and turbulent parameters. This new model for the shallow water dynamics of turbulent flow: resolves the vertical structure of the flow and the turbulence; includes interaction between turbulence and long waves; and gives a rational alternative to classical models for turbulent environmental flows.