These models and simulations have been tagged “System”.
Here is a simple model of a Car Transmission System. It simulates how the engine interacts with the clutch/flywheel to the gear box and finally to the differential gears over 1000 fuel units.
From Werner Ulrich's JORS Articles Operational research and critical systems thinking – an integrated perspective. Part 1: OR as applied systems thinking. Journal of the Operational Research Society advance online publication (14 December 2011). and Part 2 :OR as argumentative practice.