Question) fan simulation & B.C
 

Hi

I want to compare experimental data in anechoic room
with fluent simulation result.

So, in ICEM-CFD , i meshed huge room(hexaheron room) and fan.
(fan diameter = 70mm , room size = 2400mm x 2400mm x 1500mm)

To get initial state information for sliding mesh model,
i used steady solver and MRF model.



Q. 1

I used wall B.Cs at floor and pressure inlet & pressure outlet B.Cs at other sides.

Then, ' reversed flow ' is occurred and it didn't vanished .

How can i vanish this message.

Just extend my room size?

Q. 2

In my case,
can I change pressure inlet & pressure outlet B.Cs to pressure far-field B.Cs?


Thanks in advance.