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Forum: OpenFOAM Meshing & Mesh Conversion

March 11, 2011, 01:39

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

Nope, I would not recommend it either. Its by no...

Nope, I would not recommend it either. Its by no means a finished product and it works
quite slow and only on 1 processor.
I am using it on a daily basis though for which it does exactly what I...

Forum: OpenFOAM Meshing & Mesh Conversion

December 21, 2010, 02:10

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

The link is permanent. Works fine for me.

The link is permanent.
Works fine for me.

Forum: OpenFOAM Meshing & Mesh Conversion

November 23, 2010, 02:39

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

Just reduce the number of iterations.

Just reduce the number of iterations.

Forum: OpenFOAM Meshing & Mesh Conversion

November 23, 2010, 02:00

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

Yes. All ends of the surface are automatically...

Yes. All ends of the surface are automatically detected as edges.

By setting 'includeInterior yes' you will also add more lines to the
list of features.

ivan_cozza: I get that error also...

Forum: OpenFOAM Meshing & Mesh Conversion

November 11, 2010, 04:37

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

Right, I forgot about that part. That is not what...

Right, I forgot about that part. That is not what I did.
Try changing the names in snapEdgeDict instead.

This is what mine says
snapPatches
(
quader_Q_LID
//quader_Q_TOP
...

Forum: OpenFOAM Meshing & Mesh Conversion

November 10, 2010, 09:53

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

i had no problems at all running the setup ...

i had no problems at all running the setup

1. blockMesh
2. snappyHexMesh layers false
3. snapEdge
4. snappyHexMesh only layers true

are you sure you are looking at the last timestep when you...

Forum: OpenFOAM Meshing & Mesh Conversion

November 10, 2010, 07:47

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

i have no idea. it sound like something...

i have no idea. it sound like something fundamentally wrong in your setup, but I need the case to solve it.

Forum: OpenFOAM Meshing & Mesh Conversion

November 10, 2010, 07:30

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

yes, it is there now. This will never work....

yes, it is there now.

This will never work. You have several lines crossing the edge, but snapEdge only works on the boundaries, so this will produce negative volumes.
This is why you should use...

Forum: OpenFOAM Meshing & Mesh Conversion

November 10, 2010, 07:01

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

...awaiting pictures.

...awaiting pictures.

Forum: OpenFOAM Meshing & Mesh Conversion

November 4, 2010, 12:54

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

That is really weird... It looks like its...

That is really weird...

It looks like its calling for an average operation.
Im guessing that your controlDict contains functionObjects that require U.

Forum: OpenFOAM Meshing & Mesh Conversion

November 4, 2010, 09:04

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

that should work. Im using my own hack to...

that should work.

Im using my own hack to extract features from an stl.
Its quite slow, but it will extract the feature-lines from an stl and write them on vtk-format.
the feature angle is...

Forum: OpenFOAM Meshing & Mesh Conversion

November 4, 2010, 03:20

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

Thats how I use it mostly. By setting...

Thats how I use it mostly. By setting includeInterior to no and using a very large tolerance you
usually get the best best results.
Have you checked the stl? The stl quality is sometimes pretty...

Forum: OpenFOAM Meshing & Mesh Conversion

November 4, 2010, 02:07

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

I also get this 'error' sometimes, but when I...

I also get this 'error' sometimes, but when I look at the mesh and especially the wrongOrientedFaces I cant find anything wrong and the simulation seems to run just fine.

I dont know what it is.

Forum: OpenFOAM Meshing & Mesh Conversion

September 8, 2010, 06:11

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

your snapPatches is empty

your snapPatches is empty

Forum: OpenFOAM Meshing & Mesh Conversion

September 7, 2010, 14:16

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

I updated the wiki with some info on how snapEdge...

I updated the wiki with some info on how snapEdge works (or should work)
It would be nice if anyone see any flaws or ways to improve it.

Forum: OpenFOAM Meshing & Mesh Conversion

September 6, 2010, 06:57

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

just tested to run it in parallel and it does not...

just tested to run it in parallel and it does not work...needs some extra checking i guess

N

Forum: OpenFOAM Meshing & Mesh Conversion

September 3, 2010, 02:33

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

@johannes I dont know what it was with your...

@johannes

I dont know what it was with your geometry, but if I extract the stl feature-lines it results in features on what seems to be planar surfaces. This can cause problems beacuse the mesh...

Forum: OpenFOAM Meshing & Mesh Conversion

September 1, 2010, 02:26

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

I have updated the snapEdge utility and you can...

I have updated the snapEdge utility and you can just download it from the wiki.
Its not 100% done with what I want it be able to do, but it is definitely usable and better
than the old version.
...

Forum: OpenFOAM Meshing & Mesh Conversion

August 20, 2010, 07:44

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

sorry, my mistake. it wasnt you that sent me the...

sorry, my mistake. it wasnt you that sent me the case it was johannes.
Im not going to release a half-done code full of commented info-statements.
You can improve the old code if you want, but the...

Forum: OpenFOAM Meshing & Mesh Conversion

August 20, 2010, 07:08

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

nice. dont bother trying to investigate the...

nice.

dont bother trying to investigate the code. i have already re-written it completely and Im using your
case to test it on.

N

Forum: OpenFOAM Meshing & Mesh Conversion

August 19, 2010, 01:58

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

Oohh, this is a very nice test case. I am doing...

Oohh, this is a very nice test case.
I am doing a complete re-write of snapEdge at the moment to better handle internal features.
I will let you know once I have it working.

I dont have any...

Forum: OpenFOAM Meshing & Mesh Conversion

August 16, 2010, 09:23

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

if you have includeInterior no, then you should...

if you have includeInterior no, then you should set something 'large'..i use 10.0.
If you have includeInterior yes, then it will definitely not work with a value larger than 1.0.
The program just...

Forum: OpenFOAM Meshing & Mesh Conversion

August 16, 2010, 02:54

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

if you only have 1 patch (walls) you probably...

if you only have 1 patch (walls) you probably didnt use

includeInterior yes;

with only 1 patch you do not have any feature edges that defines the boundary of the patch, since
the patch must be...

Forum: OpenFOAM Meshing & Mesh Conversion

July 28, 2010, 07:35

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

nope, there shouldnt be any difference.

nope, there shouldnt be any difference.

Forum: OpenFOAM Meshing & Mesh Conversion

July 15, 2010, 11:59

Replies: 138

[snappyHexMesh] jagged, ragged edges...

Views: 30,823

Posted By niklas

Can you download the latest version from the wiki...

Can you download the latest version from the wiki and try these settings.
If you want it better around the capillaries/walls intersection you have to refine it more.

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