Hi all,
I am trying to model a simple Jet Fan, a cylindrical shell with an inlet and outlet using simpleFoam.
Both the inlet and outlet are set to a fixedValue of 16 m/s.
In the beginning the Outlet sucks in air at 16 m/s as expected but after about 150 timesteps the Outlet behaves strangely by throwing stream of air into the domain.
The patch velocity however is maintained at 16 m/s so I presume there is no infiltration of air back into the domain. The behaviour just besides the outlet is quite strange
I tried using other BC for the Outlet like flowRateOutletVelocity, uniformInletOutlet but the same behaviour persists. I don’t know if it has to do with the default tolerances in the fvSolutions or fvSchemes or under relaxation factors.
Has anyone modelled simple fans like these before or experienced a similar issue?
Any input is much appreciated.
Thank you!!
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case folder
–Fan_Test.zip (14.8 KB)