Scaling down units for geometry in microns

[anserko]

Hello,

I'm modelling flow through a fibre-like structure

As I undestood from previous discussions (here, for instance #170 (comment)), the solver uses SI units.

The scale of my geometry is in microns. Is it possible to model my problem by rather scaling down units from metres to microns in a scene file (for viscosity, density, gravity etc, e.g. microns^2/sec instead of m^2/sec) instead of actually scaling down the geometry to microns to keep units in SI?

My concern is that if I scale down the geometry to microns, particle size value will be numerically extremely low, which might cause convergence issues.

Thank you in advance!