Allow remeshing

[BenjaminRodenberg]

Currently, preCICE does not support remeshing: coupling meshes have to stay the same from the beginning of the simulation to the end. However, in the Fluent adapter there are still some relicts of the previously supported remeshing functionality. As soon as remeshing is supported in preCICE (again), we could also try to revive these parts of the adapter.

However, as a first step we should completely ignore the remeshing functionality and first get the adapter running (#1). As soon as the adapter is running, we can try to add the remeshing functionality again.

Functions related to remeshing

• regather_write_positions
• regather_read_positions

[BenjaminRodenberg]

This issue is currently out of scope, because remeshing is not yet implemented in preCICE. I will close it. As soon as remeshing exists in preCICE, feel free to reopen it. @fsimonis Any objections?