[HPE]

Hi

- Various functionalities do not exist within all the OpenFOAM variants. Therefore, one functionality may exist only in a single variant. Yet it is usually manageable to transfer them across. But the easiest solution is to install all variants at the same time.
- You can use `fieldAverage` FO on `T` to obtain time-averaged T?
- Or if you want to sample `T`, you can use various `sample` functionalities.
- To monitor the mass flow through given patches, you can use various functionalities. One can be surfaceFieldValue function object.

Hope this helps.