flow over plate tutorial's Fluid cases differ

[BenjaminRodenberg]

• Fluid folder for the OF-OF coupling: folder is called Fluid. Participant is called Fluid. Allrun script is provided in parent folder.
• Fluid folder for the OF-FE coupling does not exist, but has to be copied from OF-OF case: No Allrun or runFluid script is provided. User has to manually start the case.
• Fluid folder for the OF-Nutils coupling: folder is called OpenFOAM. Participant is called OpenFOAM. runFluid script is provided in OpenFOAM folder.

This inconsistency leads to problems, if for the OF-FE case the user does not copy the Fluid folder from the OF-OF case (what we suggest in the documentation), but from the OF-Nutils case (which is available in the tutorials).

Can we improve this situation by using the same structure for all cases? From my point of view the participant names should be consistent. Running via Allrun vs. runFluid vs. manually is not very critical, but could by achieved by changing the Allrun script to call independent runFluid and runSolid scripts.

Another solution would be to provide an independent Fluid folder in the FE-FE case. This will avoid mistakes, but I like it that the copy-paste approach currently very explicitly illustrates the idea of reusing an existing solver.

[MakisH]

This is (in my opinion) a duplicate of #28.

[BenjaminRodenberg]

This is (in my opinion) a duplicate of #28.

100% correct. Then we should revive #28.