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Basic postprocessing

  • As usual, visual postprocessing can be done in paraview.
  • For visualization of particles topology inside the cyclone follow theses steps:
    • Run paraview in case directory, i.e. use paraFoam command.
    • Load the case, make just boundary visible (check only patches in Mesh parts).
    • Make few clips to see just backward walls.
    • Load the case again and visualize internalMesh only and alpha.particles volume field.
    • Instead of surface representation use volume representation.
    • For transient cases a time information is important; Go to menu Filter -> Alphabetical -> Annotate Time Filter.
    • Final view is depicted in Figure crossref

Figure: Alpha.particles visualization.

  • It is possible to evaluate any field which given solver uses at any patch directly. It can be performed with patchAverage utility.
  • Moreover, using foamCalc utility, it is possible to create new field e.g. magnitude of U, components of U (i.e. Ux, Uy, Uz),…
  • To evaluate velocity magnitude at the outlet do following steps:
    • First, create field magU:
      # mpiexec -np 4 foamCalc mag U -parallel
    • Second, compute average value at the outlet patch:
      # mpiexec -np 4 patchAverage magU Cyclone-outlet -parallel
  • For each saved time it prints the average volume of velocity magnitude directly on screen .