1 / 25

The Tous case study Sumacarcel flooding

The Tous Case study: mesh refinement & optimization data J. Murillo University of Zaragoza 4th (Final) IMPACT Project Workshop: Zaragoza, Spain 3-5th November 2004. The Tous case study Sumacarcel flooding. Sumacarcel. Mathematical model. Deph averaged Navier-Stokes equations. Numerical model.

pierce
Download Presentation

The Tous case study Sumacarcel flooding

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Tous Case study:mesh refinement & optimization dataJ. MurilloUniversity of Zaragoza4th (Final) IMPACT Project Workshop:Zaragoza, Spain 3-5th November 2004

  2. The Tous case studySumacarcel flooding Sumacarcel

  3. Mathematical model Deph averaged Navier-Stokes equations

  4. Numerical model Finite Volume Upwind Scheme • explicit and first-order • upwind treatment of the source terms • special treatment of wetting/drying boundaries.

  5. Adapted mesh refinement Time step and geometry

  6. Adapted mesh refinement Number of involved cells • If the number of cells increases the discrete representation of the real problem improves. • The accuracy of the results is enhanced • Computing time grows

  7. Adapted mesh refinement Computacional experiencie • Larger cells for smooth topography • Smaller cells for highly irregular topography • Optimization: Local refinement

  8. Adapted mesh refinement Structured meshes: refinement Refinement area

  9. Level 1 Level 2 Level 3 Level 4 Adapted mesh refinement Triangular mesh of variable density

  10. Adapted mesh refinement Triangular mesh refinement: conectors

  11. Adapted mesh refinement Triangular mesh refinement criteria Z: bottom elevation

  12. Adapted mesh refinement Triangular mesh refinement.

  13. Adapted mesh refinement Detail of the reservoir. Constant density mesh, edge 5 cm.

  14. Adapted mesh refinement Detail of the reservoir. Constant density mesh, edge 20 cm.

  15. Adapted mesh refinement Detail of the reservoir. Maximum edge lenght 20 cm. Minimum 10 cm.

  16. Adapted mesh refinement Constant density mesh, edge 5 cm. Maximum edge lenght 20 cm. Minimum 10 cm.

  17. Adapted mesh refinement Constant density mesh, edge 5 cm. Maximum edge lenght 40 cm. Minimum 20 cm.

  18. Adapted mesh refinement Detail of the reservoir. Maximum edge lenght 40 cm

  19. The Tous case study General view

  20. Detail of Sumacarcel. Edge 1.25 m. Number of cells: 213689

  21. Detail of Sumacarcel. Maximum edge lenght 20 m. Minimum 5 m. Number of cells: 39231

  22. Detail of Sumacarcel. Maximum edge lenght 20 m. Minimum 5 m.Number of cells: 39231

  23. Computed data. Initial hydrograph.

  24. The main conclusion is that the development of local refinement techniques is fundamental to perform flooding simulation over gross areas, where highly irregular geometries are found. If not the computing time is unacceptable.

  25. Thank you for your attention

More Related