|April 23, 2015, 08:02||
Setting U fixed value at the outlet?
Join Date: May 2014
Posts: 6Rep Power: 3
I am testing a very simple 3D cylinder case with OF v2.3.0 however I get some strange results and thought I could ask here.
As mentioned, the model is a 3D cylinder surface-meshed with Tria elements and the volume mesh consists of Penta-element boundary layers and Tetra elements for the rest of the domain.
Instead of applying the proper BCs at the inlet (U fixed value, p zeroGradient) and outlet (U inletOutlet, p fixedValue 0) I use the following:
p fixed value 0
U fixed value 5
In other words I try to impose a constant velocity at the outlet coming out of the domain.
However the results are not quite as expected. As shown in the pictures below, velocity gets too high at the inlet and propagates to the rest of the domain as iterations increase.
Also, velocity is not uniform (5 m/s) at the outlet as set.
Turbulence model: k-omega SST
OF version: 2.3.0
Here is the fvSchemes file:
Any ideas would be very helpful.
Thanks a lot in advance,
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