Скачать или смотреть Cleanroom door motion - cross contamination

This short animation shows a possible cross contamination between two adjacent cleanrooms due to door motion. It was generated from the results of a transient CFD simulation with StarCCM+ using an overset mesh and a passive scalar as a tracer.

Between the rooms, a pressure cascade of 10 Pa is maintained at closed door state. Supply and extract air flow rates are fixed in both rooms.

The coloured volume shows the fraction of "contaminated air" from the left room (low pressure). This value is 1 in the left room and 0 in the right room, if the door is closed. It can be seen, that a considerable amount of "contaminated air" passes the door against the pressure cascade when the door is moved. Especially door closing can lead to a significant contamination transport.