Using fvOptions in cfdemSolverPisoSTM

Hi all,

I am looking to impose a certain coded source term to scalar fields (temperature and species) in my fluidisation model which is adapted from the ErgunTestMPI model. There are quite a bit of examples on how to do this on the internet and I have followed some of them, however, I haven't been able to get the model to work. I have a few questions which I hope the experienced users here can help me out:

1. Inside the cfdemSolverPisoSTM.C and eulerianScalarField.C files, I see that fvOptions term is included in the governing equation for momentum and scale terms. Does this mean using fvOptions is possible for the solver I am using? The version history (3.6) states that fvOptions functionality is added to cfdemSolverPiso, so I wasn't sure if it is also the case for STM model.

3. I noticed that at the bottom of scalarTransportProperties dict file, fvOptions object for each scalar field is defined at the bottom of the scalarTransportProperties, e.g. fvOptionsT{}, fvOptionsC{}. Is this where I should define my fvOptions code? Or is it a reference that is used to lookup files with corresponding names in other location?

I have tried creating fvOptions and fvOptionsT files in both the constant and system folders inside CFD directory - the simulation runs as usual but no change in T field could be observed, as if the fvOptions file is not recognised by the solver at all.

Greatly appreciate anyone who could provide some insight into this.