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Forum: OpenFOAM Running, Solving & CFD

June 17, 2014, 08:49

Replies: 20

Problem with transient simulation (icoFoam)

Views: 3,687

Posted By matejfor

There is nothing to be sorry about. in...

There is nothing to be sorry about.

in console type: tut --to get to the directory with tutorials.
and type: find . -name "controlDict" |xargs grep probes
(or you may try command ack probes)...

Forum: OpenFOAM Running, Solving & CFD

June 17, 2014, 07:23

Replies: 20

Problem with transient simulation (icoFoam)

Views: 3,687

Posted By matejfor

If the flow is not oscillating (do you have a...

If the flow is not oscillating (do you have a probe downstream of bifurcation?) and you are not planning oscillations imposed at inlet and flow is converging in steady state, I would use simpleFOAM...

Forum: OpenFOAM Running, Solving & CFD

June 17, 2014, 06:59

Replies: 20

Problem with transient simulation (icoFoam)

Views: 3,687

Posted By matejfor

I'm glad to hear that :) Now, I can see that...

I'm glad to hear that :)

Now, I can see that your time step is solved in 7 seconds and the courant number is really small. This is on the new and better mesh? ICEM is powerfull mesher.

Why are...

Forum: OpenFOAM Running, Solving & CFD

June 17, 2014, 02:53

Replies: 20

Problem with transient simulation (icoFoam)

Views: 3,687

Posted By matejfor

Hi, your timeStep is constant, and you are...

Hi,
your timeStep is constant, and you are getting rising mean and max. courant number. This could mean 2 things. A) you are starting from zero field imposing velocity at the inlet, which means...

Forum: OpenFOAM Running, Solving & CFD

June 16, 2014, 06:43

Replies: 20

Problem with transient simulation (icoFoam)

Views: 3,687

Posted By matejfor

Hi, looking at your bounding box dimensions,...

Hi,
looking at your bounding box dimensions, checking with your Re number, your tube diameter is 2 mm, is it right?

It is only one face which is wrong - according to checkMesh
skweness looks OK....

Forum: OpenFOAM Running, Solving & CFD

June 16, 2014, 02:26

Replies: 20

Problem with transient simulation (icoFoam)

Views: 3,687

Posted By matejfor

What exactly means "same problem"? Is it with...

What exactly means "same problem"?
Is it with the same settings?
with similarly not so good mesh?
non-orthogonality to 74% is pretty high.
And as you can see upwind is not saving you.

If your...

Forum: OpenFOAM Running, Solving & CFD

May 10, 2009, 03:37

Replies: 20

Problem with transient simulation (icoFoam)

Views: 3,687

Posted By matejfor

Hi, reading your nNonOrthogonalCorrectors...

Hi,

reading your nNonOrthogonalCorrectors 0; what is your checkMesh saying?
do you have a good convergence of pressure in those two PISO steps?
and the velocities?

good luck
matej

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