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Forum: OpenFOAM Running, Solving & CFD

July 8, 2010, 08:32

Replies: 15

Turbulence inflow generation - recycling method

Views: 8,590

Posted By eugene

If you run a periodic channel flow with exactly...

If you run a periodic channel flow with exactly the same numerical settings, do you get the same problem? Did you initialise the turbulence in a sensible way? (search for perturbU tool for a way of...

Forum: OpenFOAM Running, Solving & CFD

June 25, 2010, 05:12

Replies: 15

Turbulence inflow generation - recycling method

Views: 8,590

Posted By eugene

To average the mapped field on the inlet patch,...

To average the mapped field on the inlet patch, first define 2 new variables in the boundary condition .H file:

label N_;
vecterField UpatchMean_;

Then in the evaluation section you would...

Forum: OpenFOAM Running, Solving & CFD

June 19, 2010, 02:06

Replies: 15

Turbulence inflow generation - recycling method

Views: 8,590

Posted By eugene

I think you misunderstood me. There are 2...

I think you misunderstood me. There are 2 averaged velocities in the equation you provided. The first is the experimentally measure one <U>(z_inlet), the second is the average you should calculate...

Forum: OpenFOAM Running, Solving & CFD

June 16, 2010, 07:33

Replies: 15

Turbulence inflow generation - recycling method

Views: 8,590

Posted By eugene

Hi, I would start from...

Hi,

I would start from directMappedVelocityFluxFixedValueFvPatchField.

I suggest you create your own average of the mapped velocity inside the modified boundary condition. Depending on an...

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