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Forum: OpenFOAM Running, Solving & CFD

March 2, 2008, 05:42

Replies: 6

Fluid flow through wall U %3d 0 ignored when set pressure gradient for buoyancy

Views: 1,744

Posted By kar

Michael, first about BC: ph

Michael,

first about BC: physically there is gradient. Is there any reason to say it cannot be implemented in OpenFOAM?
Harvoje said: "You did not account for this in the pressure equation...

Forum: OpenFOAM Running, Solving & CFD

March 1, 2008, 12:25

Replies: 6

Fluid flow through wall U %3d 0 ignored when set pressure gradient for buoyancy

Views: 1,744

Posted By kar

Harvoje, I found in an old

Harvoje,

I found in an old thread ( http://www.cfd-online.com/OpenFOAM_Discus/messages/1/815.html ), there was boussinesqBuoyantFoam by you, but link doesn't work... Maybe you could post it in...

Forum: OpenFOAM Running, Solving & CFD

March 1, 2008, 11:34

Replies: 6

Fluid flow through wall U %3d 0 ignored when set pressure gradient for buoyancy

Views: 1,744

Posted By kar

Harvoje, I wouldn't ask and

Harvoje,

I wouldn't ask and make such useless experiments if I knew about BC non-independence etc.
Decided to implement gravitational force and temperature dependent density in icoFoam.
...

Forum: OpenFOAM Running, Solving & CFD

February 29, 2008, 16:40

Replies: 6

Fluid flow through wall U %3d 0 ignored when set pressure gradient for buoyancy

Views: 1,744

Posted By kar

Hi there, I added buoyant f

Hi there,

I added buoyant force (1 + alpha*T)*g to an extended icoFoam solver, g = (0 -9.81 0), then set BCs for p as pressure gradient such that eq grad(p) = g is satisfied. And what happens is...

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