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Forum: OpenFOAM Running, Solving & CFD February 26, 2009, 14:02
Replies: 25
Views: 5,888
Posted By nandiganavishal
Hi All, As I had already po

Hi All,

As I had already posted before.. I would like to know more about how exactly PhiEqn.relax() and Phi.relax works. I know former is implicit and it relaxes the matrix and the latter just...
Forum: OpenFOAM Running, Solving & CFD February 26, 2009, 14:01
Replies: 25
Views: 5,888
Posted By nandiganavishal
Hi All, As I had already po

Hi All,

As I had already posted before.. I would like to know more about how exactly PhiEqn.relax() and Phi.relax works. I know former is implicit and it relaxes the matrix and the latter just...
Forum: OpenFOAM Running, Solving & CFD February 10, 2009, 13:39
Replies: 25
Views: 5,888
Posted By nandiganavishal
Hi Dragos, I am running Ope

Hi Dragos,

I am running OpenFOAM on a Linux (ubuntu) machine... I am not using windows...

Thanks

Regards

Vishal
Forum: OpenFOAM Running, Solving & CFD February 8, 2009, 11:05
Replies: 25
Views: 5,888
Posted By nandiganavishal
Dear Dragos, No I just chec

Dear Dragos,

No I just checked it again... There is no space

fvm::laplacian(C1) + fvc::div(((Z1*C1)*fvc::grad(Phi)))

divSchemes
{
default none;
div(((Z1*C1)*grad(Phi))) Gauss...
Forum: OpenFOAM Running, Solving & CFD February 7, 2009, 15:33
Replies: 25
Views: 5,888
Posted By nandiganavishal
Dear Henrik, The equations

Dear Henrik,

The equations which I have quoted in the beginning of the forum is not the equations I am looking to solve... The exact equations which I would like to solve are

div...
Forum: OpenFOAM Running, Solving & CFD February 6, 2009, 18:53
Replies: 25
Views: 5,888
Posted By nandiganavishal
Dear Henrik, Thanks for the

Dear Henrik,

Thanks for the reply.

"a) Why do you have ddt-terms if you are seeking a steady-state solution? "

Though I used ddt terms, I mentioned steadyState in my fvschemes, it...
Forum: OpenFOAM Running, Solving & CFD February 6, 2009, 14:10
Replies: 25
Views: 5,888
Posted By nandiganavishal
Dear Henrik, Thanks a lot f

Dear Henrik,

Thanks a lot for the suggestion, now I see the change..

But still the solution is blowing up with each iteration. I see that the residual is changing but it is not helping in...
Forum: OpenFOAM Running, Solving & CFD February 6, 2009, 01:38
Replies: 25
Views: 5,888
Posted By nandiganavishal
Dear Henrik, Thanks for the

Dear Henrik,

Thanks for the response...

Here is how I have coded my equations

fvScalarMatrix C1Eqn
(
fvm::ddt(C1)
Forum: OpenFOAM Running, Solving & CFD February 4, 2009, 16:19
Replies: 25
Views: 5,888
Posted By nandiganavishal
Hi Henrik, Thanks for the r

Hi Henrik,

Thanks for the response.. Now I understood....

I just have a small query regarding implementing some boundary condition.. I would like to incorporate a fixed gradient b.c which...
Forum: OpenFOAM Running, Solving & CFD February 2, 2009, 23:22
Replies: 25
Views: 5,888
Posted By nandiganavishal
Hi Henrik, Thanks for the r

Hi Henrik,

Thanks for the response... So Now the code should be something like this right....

fvScalarMatrix PhiEqn
(
fvm::laplacian(Phi) == -alpha * Z1 * C1 - alpha * Z2 * C2
); ...
Forum: OpenFOAM Running, Solving & CFD November 25, 2008, 15:17
Replies: 25
Views: 5,888
Posted By nandiganavishal
Hi All, I would like to sol

Hi All,

I would like to solve the following equations using relaxation techniqes. As direct solvers are not available in OpenFoam.

ddt(C1) = K1 * laplcian(C1) + K2 * laplacian (phi) ...
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