OpenFOAM® Journal Discusion Forum at CFD-Online
If you did not know, the OpenFOAM® Journal is partnering with cfd-online.com, where we host a discussion forum for each paper published in the Journal. This way you can directly get in touch with the authors as well as other interested viewers of the publication.
A good example is located here for the manuscript
Michael Alletto: Comparison of Overset Mesh with Morphing Mesh: Flow Over a Forced Oscillating and Freely Oscillating 2D Cylinder
Check it out, please use the forum for your own questions and make sure to consider submitting to the Journal!