[mpeti]

Dear forum members,

I would like to specify time varying inlet velocity boundary conditions over the inlet of a pipe. For this purpose I can use the built in timeVaryingUniformFixedValue plus a data file with (timestamp, vector) pairs.

As the inlet velocities are assumed to be coaxial with the inlet patch surface normal, having scalar values instead of vectors in the data file would make things a lot easier (there are multiple datasets with different inlet orientations, but the inlet patch is always properly oriented).

As far as I know the BC type surfaceNormalFixedValue creates vector BCs from a single scalar input (using the patch normal), I believe this is the behavior I would need using time varying scalars. My question is if there is such a BC type already available, or are other alternative solutions to this problem?

Thanks a lot,
Peter