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Forum: OpenFOAM Running, Solving & CFD

July 29, 2009, 03:38

Replies: 19

Outflow boundary condition for a boussinesq fluid

Views: 3,401

Posted By henrik

Chiven, if you have inflow through your...

Chiven,

if you have inflow through your outlet, you may try

outlet:
-U inletOutlet, inletValue (0 0 0)
-k inletOutlet, inletValue "something small"
-epsilon inletOutlet, inletValue...

Forum: OpenFOAM Running, Solving & CFD

July 27, 2009, 03:40

Replies: 19

Outflow boundary condition for a boussinesq fluid

Views: 3,401

Posted By henrik

Dear Chiven, You switched off ALL convection...

Dear Chiven,

You switched off ALL convection terms:

Use upwind for the moment.

It's a massive geometry - 3 Million cells, two symmetry planes, two inlets ... Is the mesh correct? run...

Forum: OpenFOAM Running, Solving & CFD

July 26, 2009, 06:24

Replies: 19

Outflow boundary condition for a boussinesq fluid

Views: 3,401

Posted By henrik

Chiven, yes, this is another route you may...

Chiven,

yes, this is another route you may try: Get simpler codes to work. However, my bet is that your boundary conditions, mesh, schemes or solution parameters or so messed up that nothing will...

Forum: OpenFOAM Running, Solving & CFD

July 26, 2009, 04:19

Replies: 19

Outflow boundary condition for a boussinesq fluid

Views: 3,401

Posted By henrik

Dear Cieven, you have a very large time step...

Dear Cieven,

you have a very large time step continuity. Please output a time step and have a look at the flow field it should give you an idea which boundary is wrong.

Henrik

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