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Forum: OpenFOAM Running, Solving & CFD

March 7, 2008, 07:58

Replies: 7

Steady pipe flow mean velocity higher than inlet velocity

Views: 6,317

Posted By anita

Hi, after rerunning the 3D

Hi,

after rerunning the 3D case U_mean is between 9.94 and 9.96 m/s along the axis. 10 m/s is the inlet velocity. I think now this simulation should be ok.

Regards
Anita

Forum: OpenFOAM Running, Solving & CFD

March 6, 2008, 10:11

Replies: 7

Steady pipe flow mean velocity higher than inlet velocity

Views: 6,317

Posted By anita

Hi Niels, thanks for your h

Hi Niels,

thanks for your help. The cross section is a circle.

When I evaluated U_mean again, I found out I was my fault. I calculated U_mean over a line on the cross section (like in 2D)...

Forum: OpenFOAM Running, Solving & CFD

March 6, 2008, 05:29

Replies: 7

Steady pipe flow mean velocity higher than inlet velocity

Views: 6,317

Posted By anita

Hi Eric, boundary conditions

Hi Eric,
boundary conditions from 3D case

Inlet
U fixedValue, uniform(0 10 0)
k fixedValue, uniform 0.375
p zeroGradient
epsilon fixedValue, uniform 8.7549

Outlet

Forum: OpenFOAM Running, Solving & CFD

March 6, 2008, 02:59

Replies: 7

Steady pipe flow mean velocity higher than inlet velocity

Views: 6,317

Posted By anita

Hi, I am trying to simulate

Hi,

I am trying to simulate a turbulant pipe flow with simpleFoam k-epsilon (with settings from pitzDaily tutorial).

My pipe has a diameter of 43.1 mm. At the inlet is a flow of 10 m/s.
...

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