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Forum: OpenFOAM

September 28, 2010, 19:13

Replies: 12

Boundary condition for bifurcated flow

Views: 5,146

Posted By titio

Correction

Hi,

I meant zero pressure gradient at inlet and fixed value of zero pressure at the outlet. Worked hard today. Going to sleep. Is midnight in my time zone.....

Titio

Forum: OpenFOAM

September 28, 2010, 17:29

Replies: 12

Boundary condition for bifurcated flow

Views: 5,146

Posted By titio

Boundary conditions

Hi,

I believe the right conditions for your case are:

- Velocity: constant velocity inlet and zero gradient at the outlet. This means that the flow is fully developed at the outlet.
-...

Forum: OpenFOAM

September 23, 2010, 11:16

Replies: 12

Boundary condition for bifurcated flow

Views: 5,146

Posted By titio

velocities will never work

Dear All,

Because of the overall mass balance, if inlet and outlet velocities are different, it means the channel dimensions are different. If they are the same, the simulation naturally blews......

Forum: OpenFOAM

September 23, 2010, 07:05

Replies: 12

Boundary condition for bifurcated flow

Views: 5,146

Posted By titio

Change outlet biundary conditions

Hi,

I am runing a case with two inlets and two outlets, akin to a cross-slot. At the inlet, I impose the average velocity, and at the outlet I impose zero gradient, ensuring that the flow has...

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