Granular Solver

This would simulate grains of sand and other fine point materials based on these two papers.

-Hybrid Grains: Adaptive Coupling of Discrete and Continuum Simulations of Granular Media

-A Semi-Implicit Material Point Method for the Continuum Simulation of Granular Materials

Other Papers may apply, but I believe this would greatly increase Blenders functionality.

Hybrid Grains: Adaptive Coupling of Discrete and Continuum Simulations of Granular Media

Website: cs.columbia.edu/~smith/hybrid_grains/

PDF Paper: cs.columbia.edu/~smith/hybrid_grains/files/paper.pdf

MP4 Video: cs.columbia.edu/~smith/hybrid_grains/files/video.mp4

Youtube: youtube.com/watch

A Semi-Implicit Material Point Method for the Continuum Simulation of Granular Materials

Website: bipop.inrialpes.fr/~bertails/Papiers/mpmGranular.html

PDF Paper: inrialpes.fr/bipop/people/bertails/Papiers/PDF/mpmGranular.pdf

MP4 Video: bipop.inrialpes.fr/~gdaviet/files/mpm/mpmGranular.mp4

Youtube: youtu.be/ppZT07Eg_hk

Equations PDF: bipop.inrialpes.fr/~gdaviet/files/mpm/mpmGranular-annex.pdf

Source Code: bipop.inrialpes.fr/people/gdaviet/code/sand6/