IBAMR: IBAMR is a distributed-memory parallel implementation of the immersed boundary (IB) method with support for Cartesian grid adaptive mesh refinement (AMR) 

OpenFSI: Model FSI problems, including swimming of micro-organisms with tails, flapping of 2D or 3D plate mimicking bird flying and fish swimming and biological flow with large numbers of blood cells.

OpenBloodFlow: Simulating blood flow as a red blood cell (RBC) suspension in application to a drug delivery system.

LAMMPS : Large-scale Atomic/Molecular Massively Parallel Simulator is a molecular dynamics program from Sandia National Laboratories. 

OpenFuelCell  Model Solid Oxide Fuel Cell

OpenFOAM Advanced: OpenFOAM tutorial

CRUNCH Group: Machine Learning YouTube channel for updates on research on PINN and ML