Forum: OpenFOAM Running, Solving & CFD
January 17, 2006, 14:02
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Replies: 36
Views: 3,969
The default values are 0.3 on
The default values are 0.3 on p an 0.7 on all the other variables. First you should tell me which is the shape of the G tensor you defined and which are the values you inserted.
Anyway try starting...
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Forum: OpenFOAM Running, Solving & CFD
January 16, 2006, 13:02
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Replies: 36
Views: 3,969
Hi nico the second form nu*(G
Hi nico the second form nu*(G & U) is the right one. You are using simpleFoam so you must choose in the right way the relaxation factors in the fvSolution file because otherwise the process will...
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Forum: OpenFOAM Running, Solving & CFD
January 10, 2006, 08:33
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Replies: 36
Views: 3,969
My createG utility is very slo
My createG utility is very slow..you'd better use the setFields utility which is very simple to use, you only have to create the setFieldsDict file which you can find in thedamBreak tutorial and...
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Forum: OpenFOAM Running, Solving & CFD
November 15, 2005, 18:10
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Replies: 36
Views: 3,969
Hi guys thank you everybody fo
Hi guys thank you everybody for the help you gave me, Thank you Bernhard first, you always answered my questions even if my questions were quite silly.
I wrote the solver and it seems work, i have...
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Forum: OpenFOAM Running, Solving & CFD
November 7, 2005, 11:20
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Replies: 36
Views: 3,969
I'm analysing the flow of an i
I'm analysing the flow of an incompressible fluid through a porous media inside and outside it, the therm which i have to introduce is -((nu)/K)*U
writing
fvm::SuSp(nu*G,U)where G=(K)^-1 ...
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Forum: OpenFOAM Running, Solving & CFD
November 7, 2005, 07:31
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Replies: 36
Views: 3,969
Hi Bernhard I wrote the solver
Hi Bernhard I wrote the solver and i used it but i had very bad results (negative pressure for example).
I found that when i write
nu*fvm::SuSp(U,G)
this only discretizes G in a implicit or...
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Forum: OpenFOAM Running, Solving & CFD
October 25, 2005, 11:57
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Replies: 36
Views: 3,969
Sorry Bernhard but from my que
Sorry Bernhard but from my questions i think you understood i'm very new in using OpenFoam, so i need some more hints, i know i'm boring, i'm trying to define the field of the permeability tensor...
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Forum: OpenFOAM Running, Solving & CFD
October 25, 2005, 07:23
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Replies: 36
Views: 3,969
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Forum: OpenFOAM Running, Solving & CFD
October 25, 2005, 06:48
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Replies: 36
Views: 3,969
I found the Navier-Stokes-Brin
I found the Navier-Stokes-Brinkman equation
which is
U*grad(U)-nu*laplacian(U)-nu*U/K=(1/rho)*grad(p)
where nu is the kinematic viscosity and K represents the permeability tensor.
So I...
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Forum: OpenFOAM Running, Solving & CFD
October 24, 2005, 15:22
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Replies: 36
Views: 3,969
I'm in the second condition,wi
I'm in the second condition,with inlet, NS flow, porous body, NS flow, and outlet.
Do you know a different approach to avoid the problems at the porous non porous inteface?
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Forum: OpenFOAM Running, Solving & CFD
October 20, 2005, 12:40
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Replies: 36
Views: 3,969
You're telling me to treat it
You're telling me to treat it as a boundary condition?
I have to make the flux pass through a zone which i define as a porous zone and i have to evaluate the consequent pressure loss
...
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Forum: OpenFOAM Running, Solving & CFD
October 20, 2005, 12:09
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Replies: 36
Views: 3,969
so substantially you are telli
so substantially you are telling me that i have to connect two different solvers, one when i'm out of the box and another one when i'm in the box, have you ever done something like this?
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Forum: OpenFOAM Running, Solving & CFD
October 19, 2005, 16:19
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Replies: 36
Views: 3,969
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