WIT Press


Two-dimensional Modelling Of Free Surface Flows: Experiences And Practical Applications

Price

Free (open access)

Paper DOI

10.2495/WP990121

Volume

33

Pages

11

Published

1999

Size

1,221 kb

Author(s)

M. Cetina

Abstract

A two-dimensional (2D) depth-averaged mathematical model PCFLOW2D is described. Basic equations of continuity, momentum conservation and transport of two scalar quantities (turbulent kinetic energy k and its rate of dissipation e) are solved numerically by the control volume based finite difference approach proposed by Patankar and Spalding. Its main characteristics are staggered grid and iterative procedure of the depth corrections (SIMPLE). The basic HYBRID scheme was replaced by improved CONDIF and NONDIF schemes in order to reduce numerical diffusion. In the case of laminar flow in a square cavity the NONDIF scheme produced the most accurate results. But in the cases of turbulent flow in rectangular laboratory channel with a side discharge an

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