Main Help → All Commands → Diffusion Calculations
These commands are used to activate diffusion calculations and to apply concentration bounary conditions (MPM only):
When running diffusion calculations, you need to set moisture expansion, diffusion consants, and saturation concentration for all materials in the simulation. You pick the initial concentration of particles using the Region command of the Intensity command for particles created using a BMPRegion. Finally, to get output of diffusion results, you can use various archiving and global archiving options.