Author(s): R. Aleixo; L. Larocque; J. Imran; M. H. Chaudhry; Y. Zech; S. Soares-Frazao
Keywords: No Keywords
Abstract: Assessing the risk caused by the breach of a future or existing dam is a major challenge in fluvial hydraulics. The flow following a dam break is an example of a severe transient flow where both water surface and velocity change very rapidly, both in space and time. It is possible to study this flow experimentally but the limitations of the existing experimental techniques and the associated costs do not allow large scale studies. Usually the dam-break is modelled by shallow-water models that have several limitations, namely the closure equation for the shear stress and also the fact that the turbulence is seldom accounted for. To overcome the limitations of the shallow-water model, models based on the solution of the Navier-Stokes equations may be used. In this paper, a simple case of dambreak flow is analyzed with the commercial software FLUENT and the computed and experimental results are compared.