Grain Size Distributions¶

• Run spparks

• Visualize

  • Lattice: 128x128; (spparks rendered): dump image

    

  • Lattice: 1024x1024; (paraview rendered)

    

• Post-process and analyze grain-size distributions

  • Use python/fortran/c++ to process dump and/or cluster files

    • dump file snippet

      • header information

      • typical dump file contains 1 or more time steps (depending)

      • for brevity, snippet shows single time step

      • for brevity, snippet clips all but 2 atoms

        ITEM: TIMESTEP
        1    27.0398
        ITEM: NUMBER OF ATOMS
        1048576
        ITEM: BOX BOUNDS
        0 1024
        0 1024
        -1 1
        ITEM: ATOMS id type x y z 
        1 120505 0 0 0 
        2 120505 1 0 0 
        ...
        

  • Average growth size versus time; Note trends

  

  • Grain size distributions