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About

  • pvpython postprocessor for bubble dynamics simulations
  • Created to process the output of ALPACA bubble simulations
  • Compatible with paraview 5.8.0
  • Created by Daniel Nagy (Technical University of Budapest, Sonochemistry Research Group)

Versions

2D planar postprocessor 1.8 (postprocessor.py)

  • Model: Circular bubbles

2D axisymmetric postprocessor 1.1 (postprocessorAxis.py)

  • Model: Axisymmetric bubble (symmetry is the y-axis)

3D postprocessor 1.0 (postprocessor3D.py)

  • Model: 3D bubbles

Usage

pvpython postprocessor.py inputfolder outputfolder

  • postprocessor.py could be any of the 3 scripts
  • inputfolder ALPACA output folder, .xdmf files are searched under inputfolder/domain/*.xdmf
  • outputfolder the folder where the output of the postprocessor is saved, data.csv is always saved under outputfolder/data.csv

Optional arguments

  • --debug prints debug information
  • --savewave pos save the standing wave data (pressure, density, velocity) at the specified position. This generates extra output files (e.g. wavePressureMiddle.csv)
    • top saves the data at the top of the domain
    • middle saves the data at the middle of the domain
    • bottom saves the data at the bottom of the domain
    • all saves the data at all the previous positions
  • --savepics saves an image of the bubble in each step, image saved at outputfolder/pics_#step.png
  • --pmin val specifies the bottom of the pressure color bar on the saved image (e.g. --pmin 0.5e5 sets the color bar min. to 0.5 bar)
  • --pmax val specifies the top of the pressure color bar on the saved image (e.g. --pmax 1.5e5 sets the color bar max. to 1.5 bar)
  • --nosavedata does not create the data.csv file (can be used just to save the standing wave)
  • --version prints the current version

Output

data.csv

Contains the important bubble quantities for each timestep

  • Column 1: step, the actual step number
  • Column 2: time, the time instance of the step
  • Column 3: bubble pressure
  • Column 4: bubble density
  • Column 5: bubble volume (model corrigated)
  • Column 6: bubble radius (along x axis)
  • Column 7: bubble radius (along y axis)
  • Column 8: inlet pressure
  • Column 9: inlet density
  • Column 10: bubble mass (model corrigated)

wave*.csv

Contains the information of the standing wave (e.g. PressureMiddle refers to the pressure wave at the middle of the domain).

  • Row 1: sampling positions
  • Column 1: sampling time instances
  • Row i, Column j: field variable at the i-1th time instance at the j-1th position