OpenSim
http://www.opensim.co.za/training.html
Open Source fluid dynamics simulations with FreeCAD. This uses OpenFoam.
Check out OpenFoam tutorial - https://www.cfd.at/sites/default/files/tutorialsV4/OFTutorialSeries.pdf
Capabilities are evolving for open source 3D medical imaging - https://blog.jupyter.org/slicerjupyter-a-3d-slicer-kernel-for-interactive-publications-6f2ad829f635