Images and Videos

2012-08-23: Back to 1D: Single wave on simple beach benchmark for verification


Screenshot for the single wave on simple beach benchmark at t=45 seconds: An analytical solution (bottom wave) is available which is compared to the 1D simulation (top wave). We extended the 1D benchmark to a 2D triangle grid based simulation showing that our computations are within the desired accuracy.

2012-06-15: Tsunami simulation (close view) on fully-adaptive grids using GeoClaw solvers [Full HD Video]

2012-06-15: Tsunami simulation (distant view) on fully-adaptive grids using GeoClaw solvers [Full HD Video]


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References:
  • Sierpiński Framework: M. Schreiber, H.-J. Bungartz and M. Bader, Shared Memory Parallelization of Fully-Adaptive Simulations Using a Dynamic Tree-Split and -Join Approach, IEEE Xplore, Puna, India, 2012
  • Parallel Fully Adaptive Tsunami Simulations: M. Bader, A. Breuer, M. Schreiber, Facing the Multicore-Challenge III: Aspects of New Paradigms and Technologies in Parallel Computing, 2012
  • Solver: D. L. George, Augmented Riemann solvers for the shallow water equations over variable topography with steady states and inundation, J. Comput. Phys., 2008
    M. J. Berger, D. L. George, R. J. LeVeque, K. T. Mandli, The GeoClaw software for depth-averaged flows with adaptive refinement, Advances in Water Resources, 2011
  • Bathymetry: GEBCO_08 Grid, version 20100927
  • Displacement: Shao, G., X. Li, C. Ji. and T. Maeda, Focal mechanism and slip history of 2011 Mw 9.1 off the Pacific coast of Tohoku earthquake, constrained with teleseismic body and surface waves, Earth Planets Space, 2011 - “UCSB3”
  • Buoy Data: National Oceanic and Atmospheric Administration, National Data Buoy Center, http://www.ndbc.noaa.gov
  • Okada and Detide scripts: M. J. Berger, D. L. George, R. J. LeVeque, K. T. Mandli, The GeoClaw software for depth-averaged flows with adaptive refinement, Advances in Water Resources, 2011

2012-02-12: Visualization of subpartitions (1)

2012-02-12: Visualization of subpartitions (2)

2011-12-28: After internal redesign and new framework structure

  • FWave flux solver.
  • Finite Volumes

2011-08-11: Parallelization with Workload-flooding

  • Partitions which can be independently scheduled to arbitrary work stealers are marked with red borders.
  • Postprocessed rendering in Paraview.
  • 1st order DG equation, no bathymetry, linear friction coefficient.
  • ~28 Mega Triangles per Second on 12 cores (2 Sockets, 6 cores per socket).
  • Another example with arbitrary initial domain triangulation.

2011-03-08: Shallow Water simulation with 1st order Discontinuous Galerkin

  • Rendered in realtime using OpenGL 3.0 core mode.
  • 1st order DG equation, no bathymetry, linear friction coefficient.
Impressum