Office Air Change Transient
This video shows the time that the ventilation system takes to change 99% of the air present in an open space office. It can be used to assess the effectiveness of the ventilation design.
We used the “contaminant transport” feature to distribute uniformly an initial concentration of coloured air. The concentration gets lower and lower over time, starting red and then becoming orange, green, pale blue, blue until, at last, it disappears.
The simulated transient lasted 2000 seconds of real time, a bit more than half an hour. The mesh is made of 2M cells, and the calculation was carried out in 50 minutes CPUtime.
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