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Search: Posts Made By: McCarra
Forum: OpenFOAM Meshing & Mesh Conversion April 16, 2013, 06:05
Replies: 3
Views: 531
Posted By McCarra
Hey, I would say that in that case the...

Hey,

I would say that in that case the number of cells in each direction is the sum of cells of each block. I dont know other ways of figuring that out without working block by block.

I am...
Forum: OpenFOAM Meshing & Mesh Conversion October 25, 2012, 11:57
Replies: 3
Views: 531
Posted By McCarra
Hey Ivana, Do you create the mesh using...

Hey Ivana,

Do you create the mesh using blockMesh? Then you can check (and modify) the number of cells you have in each direction in your mesh in constant/polyMesh/blockMeshDict. Check this...
Forum: OpenFOAM Running, Solving & CFD October 25, 2012, 07:22
Replies: 7
Views: 690
Posted By McCarra
I worked on a rotating gear some years ago and I...

I worked on a rotating gear some years ago and I remember that I imposed "slip" boundary condition for the pointMotion so that points can actually slip along the boundary and reduce the suffering of...
Forum: OpenFOAM Native Meshers: blockMesh September 20, 2012, 03:31
Replies: 26
Views: 2,915
Posted By McCarra
And in reference to the cannot find file " " in...

And in reference to the cannot find file " " in directory polymesh/sets, in my case it occurred because I ran topoSet with file compression activated in the controlDict and it just didn't recognize...
Forum: OpenFOAM September 20, 2012, 03:29
Replies: 15
Views: 3,266
Posted By McCarra
In my case the problem cannot find file " " in...

In my case the problem cannot find file " " in directory polymesh/sets occurred because I ran topoSet with file compression activated in the controlDict and it just didn't recognize the file because...
Forum: OpenFOAM May 2, 2011, 06:45
Replies: 9
Views: 3,331
Posted By McCarra
Try removing the list (p0 nonuniform...

Try removing the list (p0 nonuniform List<vector>) that appears in each processor*/0/pointMotionU after the decomposition. In my case it works flawless now.

Hope it helps!

Mc
Forum: OpenFOAM April 27, 2011, 05:58
Replies: 9
Views: 3,331
Posted By McCarra
What would be the code like for a z-axis rotation?

What would be the code like for a z-axis rotation?
Forum: OpenFOAM April 23, 2011, 06:50
Replies: 9
Views: 3,331
Posted By McCarra
Hello again, by replacing p0_ with...

Hello again,

by replacing p0_ with p.localPoints the simulation starts. However it causes a velocity divergence in a corner of my domain, even when ran in one processor. If I undo the p0_...
Forum: OpenFOAM April 15, 2011, 09:28
Replies: 9
Views: 3,331
Posted By McCarra
Yes you are absolutely right. Removing...

Yes you are absolutely right. Removing p.localpoints from the operator was all I had to do. No more face area mismatches for now!

Thank you very much Steffen!
Forum: OpenFOAM April 14, 2011, 17:54
Replies: 9
Views: 3,331
Posted By McCarra
Hello Steffen, Could you explain a bit more...

Hello Steffen,

Could you explain a bit more on the solution? I'm having the same problem and I don't understand what you propose to solve it.
I also have mesh movement and use my own boundary...
Forum: OpenFOAM Pre-Processing April 12, 2011, 14:26
Replies: 31
Views: 8,768
Posted By McCarra
maybe mapFields is not able to interpolate...

maybe mapFields is not able to interpolate between meshes of different sizes. I'll try to figure it out.
Forum: OpenFOAM Running, Solving & CFD April 7, 2011, 03:44
Replies: 17
Views: 5,543
Posted By McCarra
I would try to reduce the time step or decrease...

I would try to reduce the time step or decrease nu in constant/transportProperties (which has the effect of an increased Reynolds number)

Mc
Forum: OpenFOAM Running, Solving & CFD April 1, 2011, 18:03
Replies: 17
Views: 5,543
Posted By McCarra
Every mesh in OpenFOAM is 3D. All x, y and z...

Every mesh in OpenFOAM is 3D. All x, y and z directions are included. To indicate that the mesh is 2D the front and back patches are declared empty, but when you visualize the mesh it is actually a...
Forum: OpenFOAM Running, Solving & CFD April 1, 2011, 05:14
Replies: 17
Views: 5,543
Posted By McCarra
I would say that each color doesn't represent a...

I would say that each color doesn't represent a patch in the figures above. I find a bit strange the fact that inlet and outlet have different amounts of faces. Anyway, try to run the case and see...
Forum: OpenFOAM Running, Solving & CFD March 29, 2011, 16:25
Replies: 17
Views: 5,543
Posted By McCarra
I would say that the number of patches does not...

I would say that the number of patches does not matter as long as they are part of a boundary or the complete boundary. However, I must say that the images attached are a bit strange to me. Since the...
Forum: OpenFOAM Native Meshers: blockMesh March 29, 2011, 11:17
Replies: 5
Views: 1,765
Posted By McCarra
I don't think so

I don't think so
Forum: OpenFOAM Running, Solving & CFD March 28, 2011, 15:26
Replies: 17
Views: 5,543
Posted By McCarra
Hi Brad, here's some help Yes it is. As long...

Hi Brad, here's some help

Yes it is. As long as you have the same patches declared. If you have different patches you have to include them.

Look at the airFoil2D tutorial (simpleFoam). Go to...
Forum: OpenFOAM Native Meshers: blockMesh March 28, 2011, 15:09
Replies: 1
Views: 766
Posted By McCarra
Hi Florian. I'm sorry to see you haven't had any...

Hi Florian. I'm sorry to see you haven't had any response yet. I'll try to help.

I had a look at your blockMeshDict and saw that your empty patches are in blue, I mean, as a comment. You don't...
Forum: OpenFOAM Running, Solving & CFD March 24, 2011, 12:00
Replies: 1
Views: 2,284
Posted By McCarra
Try reducing the timestep (deltaT in...

Try reducing the timestep (deltaT in system/controlDict) and see if the divergence takes place later in the simulation. If it does so, reduce the timestep until there is no divergence.

If it does...
Forum: OpenFOAM Native Meshers: blockMesh January 18, 2011, 05:56
Replies: 3
Views: 1,116
Posted By McCarra
I understand. The thing is not that easy I think....

I understand. The thing is not that easy I think.

I don't know how to keep the mesh in the triangular block vertical and horizontal as it is in the rectangular block.

Good luck and keep us...
Forum: OpenFOAM Native Meshers: blockMesh January 17, 2011, 10:40
Replies: 3
Views: 1,116
Posted By McCarra
Define two blocks using blockMesh. One block for...

Define two blocks using blockMesh. One block for the triangular part and the other for the rectangle.

To define the rectangular block use hex.
To define the triangular block use wedge. See...
Forum: OpenFOAM Programming & Development January 16, 2011, 15:03
Replies: 7
Views: 1,861
Posted By McCarra
Hello Santiago, Yes you are right. In case...

Hello Santiago,

Yes you are right. In case pressure has to be calculated, adjustPhi is necessary to obey continuity and allow a correct pressure solution. If pressure is already known (fixed)...
Forum: OpenFOAM Pre-Processing January 16, 2011, 14:12
Replies: 31
Views: 8,768
Posted By McCarra
In my case it works executing: mapFields...

In my case it works executing:

mapFields directory_example/case_directory -sourceTime latestTime

I left patchMap and cuttingPatches subDicts blank in the mapFieldsDict, but I created beforehand...
Forum: OpenFOAM Programming & Development January 14, 2011, 10:23
Replies: 1
Views: 751
Posted By McCarra
Well, what I finally did is rotate a small angle...

Well, what I finally did is rotate a small angle and re-blockMesh with the position of the new points. Then interpolated results to the new mesh and rotate a bit more and repeat the process several...
Forum: OpenFOAM Native Meshers: blockMesh January 11, 2011, 07:09
Replies: 5
Views: 1,765
Posted By McCarra
I think you can create a tetrahedral mesh with...

I think you can create a tetrahedral mesh with blockMesh.
When creating the blocks you have to use the keyword tet instead of the typical hex.

Look...
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