[bigphil]

Comments and questions are welcomed on the article Chourdakis et al, OpenFOAM-preCICE: Coupling OpenFOAM with external solvers, OpenFOAM Journal, February 2023, https://doi.org/10.51560/ofj.v3.88.

[MakisH]

The article is now online! Thank you very much to the editors and all five reviewers for their hard work and extensive feedback. We would be very happy for further questions and feedback here.

[ancolli]

I have read your article and it is really interesting. I have two minor questions:


a) In the partitioned and conjugated heat transfer examples, you have used a Dirichlet-Newman coupling. A few years ago, for a similar problem, I found that this was a faster method than the harmonic averaging already implemented in the chtMultiregionFoam. However, with the Dirichlet-Newman coupling, I found some convergence problems depending on the relative difference of the conductivities on each side (electrical problems with a good and a bad conductor). Is there an easy way to implement harmonic averaging to be included in the adapter, or is it the Robin-Robin coupling that you are referring to in section 7.1?

b) My second question is about the future. I saw on the webpage that the supported versions of the OpenFOAM Foundation are from v4 until the latest one (10). Additionally, for the upcoming version (11), there are huge changes from solvers to modular solvers (https://cfd.direct/openfoam/free-sof...dular-solvers/) that will facilitate the coupling between solvers. b1) Will you also support the new versions of the OpenFOAM Foundation, or will the new redesign make it complicated?

b2) Additionally, and somewhat related to the previous question, with OpenFOAM 11 already allowing modular solvers, and ignoring the extremely important issue that your utility can be coupled to external solvers, can you identify any benefits of your approach being used with the new versions of the OpenFOAM Foundation?

I hope my question is not misinterpreted. I am simply trying to understand the possibilities with a knowledge that is much less than yours.

Kind regards and congratulations on your work