[FlyBob91]

Hello to all,
i have a little doubt. In my blockMesh file i wrote

convertToMeters 1e-6;

Does the scale apply other changes to other parameters? Should i take it in consideration when i set the diffusivity value for the scalarTransportFoam?

Thanks for help

[guin]

This parameter only scales the magnitudes of your geometry introduced in the blockMeshDict-file.

Should i take it in consideration when i set the diffusivity value for the scalarTransportFoam?

Well, it depends... (see How to give enough info to get help). In case you are simply interested on simulating a practical application "no, you shouldn't".

[RobertHB]

Hello alberto,
as guin said, the factor only applies to your mesh. As the diffusivity doesn't depend on your mesh/domain size (e.g. the diffusivity of oxygen(g) - water(l) will be the same on all scales) you don't need to scale it as long as you don't scale other parameters, e.g. the viscosity.