One rule could be ParticipantName-InterfaceName-Mesh-Modifier, where InterfaceName the name of the interface/patch for the participant that defines that mesh. We don't always name these, but we do name them in OpenFOAM.

In this case, that would be Fluid-Interface1-Mesh-Centers.

In #301, where the defining participant is CalculiX, we can take the patch: name from the YAML file. This would lead to the not so elegant Solid-flux_interface1-Mesh-Faces. Which probably means we should cleanup the CalculiX patch names everywhere, if we want to follow this rule.

Yes, sounds good. But then we could also rename Interface1 to something meaningful, right? Or is this name fixed?

Yes, sounds good. But then we could also rename Interface1 to something meaningful, right? Or is this name fixed?

These names are currently arbitrary and not used anywhere. We just need a name for each list in this dictionary format.

I renamed the participants, meshes, and data fields:

• Solid1 becomes Solid-Left and Solid2 becomes Solid-Right, following the directory names. We could further rename these, together with the directory names. Do we even worry about such "breaking" changes in the tutorials?
• For the Fluid meshes, I just used Upstream and Downstream as indicators.
• For the Solid meshes, I followed the usual Participant-Mesh name.
• The data fields are named based on the Upstream/Downstream indicator.

Should I further rename the solid participants to Solid-Upstream and Solid-Downstream? I have mixed feelings about this. On the one hand, it is not well motivated why we are using left/right and upstream/downstream. On the other hand, it helps one understand that the other participant's name is not part of the name. I tend towards renaming.

I documented the conventions in precice/precice.github.io#216.

Should I further rename the solid participants to Solid-Upstream and Solid-Downstream? I have mixed feelings about this. On the one hand, it is not well motivated why we are using left/right and upstream/downstream. On the other hand, it helps one understand that the other participant's name is not part of the name. I tend towards renaming.

me too -> Solid-Upstream / Solid-Downstream