[jens_klostermann]

My OF version is build all with cell decomposition.

Thanks to Zjelko the couplingProperties problem is solved.

But there is another strange thing, I can only use GaussSeidel as solver for U, since this is the only solver for symmetric and assymetric matrizes.
Otherwise if I use ICCG or AMG it asks for BICCG or BDCG and vice versa. How does this come?

Jens

[hjasak]

It's not that bad: have another look.

There are two fvSolution dictionaries in the case: one in system/fvSolution and another in system/solid/fvSolution so you can control the dictionaries separately. The one in "solid" is (of course) for a solid and all should be well.

If you are not picking up the proper solver, it is possible that your solid U field (requiring a symmetric solver) is hooked onto the wrong mesh, but I doubt it.

Hope this helps,

Hrv

[jens_klostermann]

Thanks Hrv,

next question: Can I run the icoFsiFoam in parallel?

Jens

[guus_kupers]

I recompiled everything and now it works. Thanks Hrv!!

[lr103476]

Well done Guus! Looking forward to your first fsi results! Maybe you can post some of your results here to share your experiences:-)

Regards,
Frank

[vinz]

Hi everybody,

I'm still working on the development of my fluid structure interaction code. At this time, I'm begining the coupling with the open source code Impact.
Thus, I have a question which might look obvious for some of you, but I don't know how to do it.
So far, I've been using a constant vectorField defined by:
vectorField fluidPatchPointsDispl = vectorField(224, vector(0,1e-02,0));
However I would like to be able to define this vectorField by reading a file which I'd put in a correct directory, like when we define the velocity field for instance, using a dictionary. Which would be the code to define such a vectorField?

Thanks in advance,
Regards,

Vincent

[deinstein]

Hi Vincent,

Could you please give me a link for "Impact"?

Dan

[vinz]

Hi Dan,

here it is:
http://impact.sourceforge.net/

you'll find number of informations ther.

Vincent

[vinz]

Hi,

Forget the story of vectorField. I found a way to do what I wanted.
Now, I have another problem. I would like to find a way to know the coordinates of the points which are on a boundary and their ordering inside a field.
For example, if I have a velocity field with four points, OpenFOAM can easily write the values. But I would like to know to which point of the mesh belongs the first value, to wich point belongs the second value....
Is there a way to do that? The idea would be a function mesh.boundaryfield()[boundary1] which would return the coordinates of the points on the boundary1. But I haven't been able to find it in the code. Does such a thing allready exist?

Thanks for your help,

Vincent

[vinz]

Hi everybody,

This is the end of my internship and I have finished my thesis report. So I give the url if some people are interested in the work that I have done on FSI on balloons and also the converter GridPro2FOAM which is largely explained in the report.
The beginning of the report won't be very interesting for many of you since it is just OpenFOAM tutorials, but the second part of the report is more on FSI and also the beginning of coupling between OF and Impact.
Unfortunately, it's only the beginning since I spent a lot of time on the discovery and testing of OpenFOAM capacities. As you can imagine, six months of internship is really short!
Anyway, if you have any questions or comments, don't hesitate.
The report can be downloaded there: Thesis report

Best regards,

Vincent

[vinz]

Hi everybody,

As explained sooner in this topic, I have to find the points which own to a specific boundary.
I found a way to do it in 2D doing:
mesh.boundaryMesh()[internalPatchID].boundaryPoints()

However, this is not working in 3D and, even if I have an idea, I don't really understand why it is not working.
So, does someone have an idea of how to fix it?
Thanks in advance,

Vincent

[vinz]

Hi Frank,

Thanks for your hint. Finnaly I don't do exactly the same way but the localPoints() fonction helped me.
For information my code is now:
vectorList boundarypoint(n);

forAll (mesh1.boundaryMesh()[internalPatchID].localPoints(), j)
{
boundarypoint[j] = mesh1.boundaryMesh()[internalPatchID].localPoints()[j];
}

And this is working pefectly fine which is great since I can now deform my balloon shape in 3D.
By the way, do you plan to update your website soon? I would be really interested in the results that you obtain on moving meshes.

Best regards,

Vincent

[lakeat]

Hi Dear Foamers,

where can i get icoFsiFoam?
I searched everywhere and cannt find it. is it replaced with another solver now(version 1.4)?
And could anyone tell me what's the difference between icoFsiFoam and icoStructFoam?
Thanks in advance

Daniel

[dmoroian]

Hi Daniel,
I think the icoFsiFoam solver comes only with the development version 1.3 from prof. Jasak. Try there!

Dragos

[guus_kupers]

Hi all,

I think that there's not a big difference between the two solvers. There are some differences involving mesh motion and coupling.

And indeed icoFsiFoam is not (yet) available for OF-14.

Guus

[lakeat]

Hi Dragos and Guus,

Thanks for your reply, Much appreciated
When will it be available?(why not make it available) ...I will try to work on it for my thesis.
now, I have a copy of icoStructFoam and turbForceFoam, but i'm very new to Foam and i dont know is it impossible to combine LES (oodles) with such and such to solve FSI.
Any suggestion?

Daniel

[jin_xu]

Hi, everybody,

I am just gettine started with linux and OpenFoam. , also trying to run icoFsiFoam. After spending several days studying the solver and piecing togther the messages posted before, I think I have made some progress, but I still run into the same problems posted "By Guus Kupers on Monday, January 15, 2007 - 01:31 am".

--> FOAM FATAL ERROR : Attempt to cast type fixedValue to type fixedValue

From function
refCast<to>(From&)
in file /home/snail/OpenFOAM/OpenFOAM-1.3/src/OpenFOAM/lnInclude/typeInfo.H at line 103.

I realize that I should rebuild the executable of tetPolyPatchCellDecomp and tetPolyPatchFaceCellDecomp. then I type:

snail@snail-laptop:~/OpenFOAM/OpenFOAM-1.3/src/tetDecompositionFiniteElement/tetPolyMeshCellDecomp /tetPolyPatches/tetPolyPatch$ gcc tetPolyPatchCellDecomp.C

and I end up with errors:

snail@snail-laptop:~/OpenFOAM/OpenFOAM-1.3/src/tetDecompositionFiniteElement/tetPolyMeshCellDecomp /tetPolyPatches/tetPolyPatch$ gcc tetPolyPatchCellDecomp.C

In file included from tetPolyPatchCellDecomp.C:27:
tetPolyPatchCellDecomp.H:39:23: error: labelList.H: No such file or directory
tetPolyPatchCellDecomp.H:40:25: error: vectorField.H: No such file or directory
tetPolyPatchCellDecomp.H:41:25: error: triFaceList.H: No such file or directory
tetPolyPatchCellDecomp.H:76: error: expected identifier before string constant
tetPolyPatchCellDecomp.H:76: error: expected ',' or '...' before string constant
tetPolyPatchCellDecomp.H:76: error: ISO C++ forbids declaration of 'TypeName' with no type
tetPolyPatchCellDecomp.H:99: error: ISO C++ forbids declaration of 'word' with no type
tetPolyPatchCellDecomp.H:99: error: 'word' declared as a 'virtual' field
tetPolyPatchCellDecomp.H:99: error: expected ';' before '&' token
tetPolyPatchCellDecomp.H:102: error: 'label' does not name a type
tetPolyPatchCellDecomp.H:105: error: 'label' does not name a type
tetPolyPatchCellDecomp.H:108: error: 'label' does not name a type
tetPolyPatchCellDecomp.H:117: error: ISO C++ forbids declaration of 'labelList' with no type
tetPolyPatchCellDecomp.H:117: error: 'labelList' declared as a 'virtual' field
tetPolyPatchCellDecomp.H:117: error: expected ';' before '&' token
tetPolyPatchCellDecomp.H:120: error: ISO C++ forbids declaration of 'vectorField' with no type
tetPolyPatchCellDecomp.H:120: error: 'vectorField' declared as a 'virtual' field
tetPolyPatchCellDecomp.H:120: error: expected ';' before '&' token
tetPolyPatchCellDecomp.H:123: error: ISO C++ forbids declaration of 'vectorField' with no type
tetPolyPatchCellDecomp.H:123: error: 'vectorField' declared as a 'virtual' field
tetPolyPatchCellDecomp.H:123: error: expected ';' before '&' token
tetPolyPatchCellDecomp.H:127: error: 'triFaceList' does not name a type
tetPolyPatchCellDecomp.H:130: error: 'faceList' does not name a type
tetPolyPatchCellDecomp.C:36: error: expected identifier before numeric constant
tetPolyPatchCellDecomp.C:36: error: expected ',' or '...' before numeric constant
tetPolyPatchCellDecomp.C:36: error: expected constructor, destructor, or type conversion before ';' token

As I am also a beginner of linux, I am not sure my way of rebuliding the executable is correct, Could anyone give me some hints?

Thanks in advance!

jin

[jin_xu]

hello again,

I think I solved this problem using "./Allmake"(I should have seen it).

jin

[viraj20feb]

Originally Posted by hjasak

ON, a direct question requires a direct answer. Here is a list of objects in OpenFOAM that represent a fixed value boundary:



They are all identified by the word fixedValue and you are mixing two of them.

More specifically, you are mixing:



and



Helps? (unfortunately, the forum software messes up the details of instantiation: the first one is on tetPolyPatchCellDecomp and the second on tetPolyPatchFaceDecomp.

I think I have already explained how to fix it: rebuild the executable.

Hrv

Hello,

I am trying to use icoFsiFoam for blood flow in an artery. As I give the command, the simulation stops immediately without any error message at the following step:

Create time

Create dynamic mesh for time = 0

Selecting dynamicFvMesh dynamicMotionSolverFvMesh
Selecting motion solver: laplace
Selecting motion diffusivity: quadratic
Reading transportProperties

Reading field p

Reading field U

Reading/calculating face flux field phi

Reading field U

Reading mechanical properties

Normalising E : E/rho

Calculating Lame's coefficients

Can anyone help?