Advanced Tutorials
------------------

The following tutorials demonstrate advanced features that can be implemented
with user defined files (UDFs). They require editing Fortran source files
(``usr_*.f`` or other ``*.f`` files) and building the custom solver.

- Reacting flows

  - Silane Pyrolysis (2D TFM): Setup TFM reaction rates.
  - Silane Pyrolysis (3D PIC): Setup PIC/DEM reaction rates.
  - Absorption column (2D TFM): Setup TFM reaction rates and user-defined properties.

- Transient keyframe data

  - Conveyor belts (Granular DEM): Impose tangential velocity to wall. :download:`Download pdf file </media/Conveyor_belts.pdf>`
  - Rotating drum (Granular DEM): Impose tangential velocity to wall. :download:`Download pdf file </media/rotating_drum.pdf>`
  - Screwfeeder (Granular DEM): Control a group of particles to represent moving geometry. :download:`Download pdf file </media/screwfeeder.pdf>`
  - Pulsating fluidized bed (TFM): Impose fluctuating inlet velocity :download:`Download pdf file </media/pulsating_fluid_bed_2d.pdf>`