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Forum: OpenFOAM

August 1, 2011, 06:52

Replies: 16

drops are moving against gravity with my mesh

Views: 1,901

Posted By akidess

No! fixedValue again is specifying a constant...

No! fixedValue again is specifying a constant pressure, which cannot physically exist on a discontinuous surface. You will need to specify a gradient instead. The interFoam tutorials use...

Forum: OpenFOAM

August 1, 2011, 05:02

Replies: 16

drops are moving against gravity with my mesh

Views: 1,901

Posted By akidess

It doesn't matter if you use one or five patches....

It doesn't matter if you use one or five patches. The important point is to change your boundary conditions.

Forum: OpenFOAM

August 1, 2011, 04:49

Replies: 16

drops are moving against gravity with my mesh

Views: 1,901

Posted By akidess

So you have five sides of a box in OUTSIDE, which...

So you have five sides of a box in OUTSIDE, which means you are trying to apply an isopressure boundary condition (totalPressure with p0=const) to a surface which contains corners and edges (i.e....

Forum: OpenFOAM

August 1, 2011, 03:42

Replies: 16

drops are moving against gravity with my mesh

Views: 1,901

Posted By akidess

What is the topology of OUTSIDE (upload a picture...

What is the topology of OUTSIDE (upload a picture of your domain)? If there is any corner in the patch, applying totalPressure is unphysical. Also, you could try zeroGradient on alpha instead of...

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