This model consists of three volumes that are connected among
each other through three doors that all have the same geometry.
All doors are closed, but they are not air-tight.
Heat is added and removed from
volB which induces
a small air flow through the doors.
This model uses Buildings.Media.Specialized.Air.PerfectGas as the medium because Buildings.Media.Air does not account for expansion if air the air is heated.
Modelica.Fluid.Systemto address issue #311.