instationary boundary conditions

Ensuring the thermal comfort and improving the ventilation effectiveness are important goals designing ventilation systems. This study describes effects if the ventilation system of a room is run in an instationary operation mode. That means that the inflow velocities are varied in time. The influence of different periodic times of the variation of the inflow velocities is investigated numerically with CFD simulations. The CFD simulation setup is validated by comparing CFD results with experimental data (Aachen Model Room).