[nraynaud]

There is a whole area of multi-domain simulation, where the simulator seamlessly jumps from one form of energy to another as long as the units match. I have always loved that.

[3dGrabber]

Modelica comes to mind.

https://media.springernature.com/lw685/springer-static/image...

https://en.wikipedia.org/wiki/Modelica

[agumonkey]

oh nice