So is this still active and under development?
Is there simulation frameworks / libraries that are considered to create this unified simulation system?
Interactive Computer Graphics
they have “SPlisHSPlasH is an open-source library for the physically-based simulation of fluids”
and PositionBasedDynamics project “PositionBasedDynamics is a library for the physically-based simulation of rigid bodies, deformable solids and fluids.”
taichi-dev/taichi_elements: High-performance multi-material continuum physics engine in Taichi]
github . com /taichi-dev/taichi_elements
zenustech/zeno node system in github . com /zenustech/zeno
in github . com/ nepluno/
there is many interesting solutions: libwetcloth, libWetHair, pyasflip, lbfgsb-gpu
There is also this one developer who has posted own progress from selfmade simulation engine: Realtime GPU smoke simulation - Other Development Topics - Blender Developer Talk looks pretty interesting - could blender foundation contact to this developer if developer would be interested to join blender dev.?
And then there was also this Vadere called open source simulation framework for corwds.
+PhysBAM
+Chrono Project
Sorry if i wasted your time.