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Model ID: 4437

Displacement Ventilation of Air in a Room

In general, there are two classes of ventilation: mixing ventilation and displacement ventilation. In displacement ventilation, air enters a room at the floor level and displaces warmer air to achieve the desired temperature. Heating sources in the room can include running electronic devices, or inlet jets of warm air. A potential issue with the displacement ventilation approach is that significant temperature variation and strong stratification may arise.

The present model investigates the performance of a displacement ventilation system. In the model, you set up the coupled heat transfer and turbulent flow equations describing the system using the predefined multiphysics coupling Turbulent Non-Isothermal Flow, k-ε. Given measured values for inlet velocity, inlet temperature, and heat flux, this model yields field configurations of air temperature and velocity that are consistent with experimental measurements and analytic global models.

Isosurface and boundary color plot showing the temperature distribution.

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