This 2D case of vortex shedding in laminar cross-flow demonstrates the
concept of recurrence.
This is a bit work-in-progress: please check whether this tutorial runs with
the recurrence model and tools of CFDEMcoupling, namely rStatAnalysis.
The simulation roughly goes through three stages:
* The initial solution computed by potentialFoam
* A period of symmetric, steady-state flow
* Finally, periodic vortex shedding
These three stages are clearly visible in the recurrence plot.
* We see how not one of the later velocity fields is similar to the initial one
* We see the intermediate stage with a symmetric flow field
* We see the periodic vortex shedding
This case is a simple bubble column, which is run by reactingTwoPhaseEulerFoam.
Upon completion, rStatAnalysis can be run to compute the recurrence statistics
of the bubble column.
This demo case must be run in parallel, as rStatAnalysis apparently does not run
as a single, serial process.
