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Numerical modeling of flow over a dam spillway

Saeedpanah, I ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1115/fedsm2006-98289
  3. Publisher: American Society of Mechanical Engineers , 2006
  4. Abstract:
  5. Free surface flows are frequently encountered in hydraulic engineering problems including water jets, weirs and around gates. An iterative solution to the incompressible two-dimensional vertical steady Navier-Stokes equations, comprising momentum and continuity equations, is used to solve for the priori unknown free surface, the velocity and the pressure fields. The entire water body is covered by a unstructured finite element grid which is locally refined. The dynamic boundary condition is imposed for the free surface where the pressure vanishes. This procedure is done continuously until the normal velocities components vanish. To overcome numerical errors and oscillations encountering in convection terms, the SUPG (streamline upwinding Petrov-Galerkin) method is applied. The solution method is tested for different discharges onto a standard spillway geometries. The results shows good agreement with available experimental data. Copyright © 2006 by ASME
  6. Keywords:
  7. Dams ; Error analysis ; Finite element method ; Flow of water ; Hydraulics ; Navier Stokes equations ; Free surface flow ; Numerical errors ; Spillway geometries ; Unstructured grid ; Spillways
  8. Source: 2006 ASME Joint U.S.- European Fluids Engineering Division Summer Meeting, FEDSM2006, Miami, FL, 17 July 2006 through 20 July 2006 ; Volume 1 SYMPOSIA , 2006 , Pages 343-349 ; 0791847500 (ISBN); 9780791847503 (ISBN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S1110016816000107