2.1.13. geom_grainGrowth
Purpose
Smoothens out interface roughness by simulated curvature flow. This is achieved by the diffusion of each initially sharply bounded grain volume within the periodic domain up to a given distance 'd' voxels. The final geometry is assembled by selecting at each voxel that grain index for which the concentration remains largest.
Usage
> geom_grainGrowth options option(s)] [Geom file(s)
Options

d
/ distance
[ 1 ]  diffusion distance in voxels

N
/ iterations
[ 1 ]  curvature flow iterations

i
/ immutable
 list of immutable microstructure indices

r
/ renumber
 output consecutive microstructure indices

ndimage
 use ndimage.gaussian_filter in lieu of explicit FFT