Paraview tutorial

Steven Bergner

October 15th, 2018

Sources

Data for today in the lab

  • Download data to /tmp/<username> on your lab machine and start paraview: 
    mkdir -p /tmp/$LOGNAME
cd !$
wget http://vault.sfu.ca/index.php/s/xMj3gafODzHiQOt/download -O pvtut-data.tgz
tar xzf pvtut-data.tgz
cd pvtut-data
/usr/shared/CMPT/big-data/ParaView-5.6.0-RC3-MPI-Linux-64bit/bin/paraview

Workflow to make a figure

  • Create a data source (load data)
  • Inspect available variables and ranges
  • Adjust view and display settings
  • Adjust visual representation and coloring
  • Adjust text and legend

Sources

Add data to 3D scene

  • as VTK source objects
  • load files using readers

Filters

Customized Filters

Work with filters

Perform basic filtering on the provided data

  • Slice
  • Iso-surface
  • Extract surface to apply smoothing
  • Clipping

Advanced: Motorbike

  • Smaller dataset (obtained via clipping)
  • Contour plot of iso-Q
  • Extract the isosurface
  • Smooth
  • Save the surface for future visualization
  • Color by velocity or pressure or both and compare
  • Build a filter that will do all the work in a single click
  • Add text and colorbar
  • Save meaningful visualizations

Motorbike - field meanings

  • Turbulence fields
    • k: turbulence kinetic energy
    • nut: eddy kinematic viscosity
    • omega: specific dissipation rate
    • Q criterion: second invariant of the velocity gradient tensor
  • Forces