of this report is to study an example of transient dynamic mesh with STAR-CD.
The physical problem we studied is a simplified port-valve and piston-cylinder
problem. This case is two-dimensional and represents a simplified four
strocke engine.The domain is composed by the cylinder, the piston surface,
the exhaust and intake valves and the exhaust and intake port. The fluid
within the cylinder is assumed to be air, initially at room temperature
The simulation begins with the piston in bottom dead centre (BDC) position and finishes after a 3600 crank revolution. The flow is assumed to be turbulent and it's driven by the motion of the piston. The port boundary pressures are held constant throughout the simulation.