Different phases at triple junctions

[prsdshiva]

I want to generate 3D grain tesselations containing different material phases at the triple junction. I should also be able to control the volume fraction of the second phase materials. (representative image attached here with)

Any thoughts on how to get this done?

Regards
Shiva

[smallrain1996]

Can you draw a diagram that I can't quite understand from your text what you want?

[prsdshiva]

I have updated the question with a representative image.

[rquey]

If the 2nd phase is at quadruple points (in 3D) or at triple points (in 2D) and made of smaller grains than for the 1st phase, then you can get such a structure by imposing a bimodal cell size distribution and assigning big cells (phase 1) and small cells (phase 2) to different groups:

neper -T -n from_morpho -morpho "diameq:lognormal(0.3,0.03)+0.5*lognormal(0.05,0.005),1-sphericity:lognormal(0.145,0.03)" -group "diameq>0.15?1:2" -morphooptiini "weight:radeq,coo:packing" -morphooptistop val=0.05 -o d

• -morphooptiini "weight:radeq,coo:packing" is not mandatory, but it speeds up the process.
• -morphooptistop val=0.05 is to stop the optimization process early.

Visualize:

neper -V d.tess -datacellcol group -print img1 -showcell "group==2" -showedge all -print img2