Vertical and horizontal two-dimensional numerical modeling of dam-break flow over fixed beds

Reza Marsooli, Mingliang Zhang, Weiming Wu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

In this study, two distinct two-dimensional (2D) models have been applied to simulate unsteady flow due to dam break. The first model, which is a horizontal 2D model, solves the shallow water equations using a Godunov-type or upwind finite volume method. The intercell fluxes are computed using the second-order HLL approximate Riemann solver. The second model, which is a vertical 2D model, solves the Navier-Stokes equations using a finite difference method, with the fractional volume of fluid (VOF) used to track the free surface. The two models have been tested in cases of dam-break waves over a wet bed, a dry bed and a triangular obstacle. It has been demonstrated that the vertical 2D model can track the water surface variations in more detail than the horizontal 2D model. However, both models can reasonably well predict the average properties of dam-break flows, such as wave propagation speed and average height.

Original languageEnglish
Title of host publicationWorld Environmental and Water Resources Congress 2011
Subtitle of host publicationBearing Knowledge for Sustainability - Proceedings of the 2011 World Environmental and Water Resources Congress
Pages2225-2233
Number of pages9
DOIs
StatePublished - 2011
EventWorld Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability - Palm Springs, CA, United States
Duration: 22 May 201126 May 2011

Publication series

NameWorld Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability - Proceedings of the 2011 World Environmental and Water Resources Congress

Conference

ConferenceWorld Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability
Country/TerritoryUnited States
CityPalm Springs, CA
Period22/05/1126/05/11

Keywords

  • Dam failures
  • Numerical models
  • Two-dimensional models
  • Unsteady flow

Fingerprint

Dive into the research topics of 'Vertical and horizontal two-dimensional numerical modeling of dam-break flow over fixed beds'. Together they form a unique fingerprint.

Cite this