Hi Rob, 

From what I understood from your inputs as well as reading the user guide:

1. As long as I am using unsteady particle tracking and select data sampling for time statistics in the run calculation task page,  then I am able to select Mean values under contour plots for DPM variables in the DPM dialog box without having to select interaction with continious phase.

2. If I am not using unsteady particle tracking then I must select interaction with continious phase in order for the mean dpm variables to be mapped to the Eulerian mesh.

3. Regardless, since the mean values are now mapped to the mesh, these dpm variables are available to use in expressions?

Is this correct? 


Many thanks