Update fluent adapter for compatibility with preCICE versions >= 2.0.0

[BenjaminRodenberg]

The current version (https://github.com/precice/fluent-adapter/commits/master) of this adapter is heavily outdated and does not work with recent preCICE versions. This issue should provide an overview over the progress of this task.

API calls that have to be updated

• precicec_getReadNodesSize
• precicec_mapReadData
• precicec_getReadPositions

Possible Refactoring

• rename all_indices to vertexIDs
• Resolved in update_fluent191
• remove commented out code
• split up fsi.c? Is this allowed for ufs? Currently there is a lot of functionality in one single file.

Documentation of fsi.c

• fsi_init
• fsi_write_and_advance
• fsi_grid_motion
• fsi_plot_coords
• count_dynamic_threads
• gather_write_positions
• gather_read_positions
• read_displacements
• write_forces
• check_write_positions
• check_read_positions
• regather_read_positions Allow remeshing #4
• regather_write_positions Allow remeshing #4

Documentation of fsi_udf.c

• DEFINE_INIT
• DEFINE_ON_DEMAND
• DEFINE_GRID_MOTION
• All resolved in update_fluent191

Remove files

• Constants.h and SolverInterfaceC.h from repo as they are part of precice src/
• Reference here. Resolved in update_fluent191

[BenjaminRodenberg]

On branch update_fluent182 some first steps regarding compatibility of preCICE 1.2.0 and fluent 18.2 were undertaken.

Current state:

• update of Makefile for compatibility with fluent 18.2
• adapter at least compiles with recent fluent and preCICE (the adapter is far from working or being tested properly)
• outdated API calls were removed or clearly indicated as TODO

[lixiaole2017]

I use precice/fluent-adapter at update_fluent182, and precice-1.2.0( ps. I just add some debug code)
Config::Configuration config; This statement cannot be run in Fluent，What is the reason for this?
fluenterror.log

[BenjaminRodenberg]

See this report for more details.

[uekerman]

Files to remove (they are part of preCICE, not the adapter, if they need to be in the same folder as the adapter due to the way Fluent links things copy them over each time)

• https://github.com/precice/fluent-adapter/blob/update_fluent182/src/Constants.h
• https://github.com/precice/fluent-adapter/blob/update_fluent182/src/SolverInterfaceC.h

Remarks:

• the wave functionality has nothing to do with the adapter. Bernhard used this for one of his testcases (compare his thesis). We could probably also remove these files.

[uekerman]

What we need to do as well: document all functions. At least a few lines in front of every function.
E.g. what does this function do?