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Forum: OpenFOAM Meshing & Mesh Conversion

September 3, 2012, 16:45

Replies: 18

[snappyHexMesh] An Epiphany (I think).

Views: 2,851

Posted By wyldckat

Hi Doug68, I hope more people can comment on...

Hi Doug68,

I hope more people can comment on this, because I'm unable to make a experienced comment on "fvSolution".

But I do know that:

ForcePZ is oscillating a lot! This could be...

Forum: OpenFOAM Meshing & Mesh Conversion

July 2, 2012, 16:54

Replies: 18

[snappyHexMesh] An Epiphany (I think).

Views: 2,851

Posted By wyldckat

Hi Doug68, I gathered the following info...

Hi Doug68,

I gathered the following info just now for another thread:

Good luck!
Bruno

Forum: OpenFOAM Meshing & Mesh Conversion

July 2, 2012, 08:58

Replies: 18

[snappyHexMesh] An Epiphany (I think).

Views: 2,851

Posted By wyldckat

Seems stable after 1500 iterations (which would...

Seems stable after 1500 iterations (which would mean no need for more iterations), but I'm not so certain if the solution achieved is accurate, given the pressure being above 1e-3 and Uy above 1e-4...

Forum: OpenFOAM Meshing & Mesh Conversion

July 2, 2012, 07:42

Replies: 18

[snappyHexMesh] An Epiphany (I think).

Views: 2,851

Posted By wyldckat

A few details: Use log scale on Y axis,...

A few details:

Use log scale on Y axis, so it's easier to see values.
It's good that the graph lines seem stable after several iterations.
The rule of thumb I usually use (because someone...

Forum: OpenFOAM Meshing & Mesh Conversion

June 30, 2012, 06:56

Replies: 18

[snappyHexMesh] An Epiphany (I think).

Views: 2,851

Posted By wyldckat

Hi Doug68, Well, one lousy cell can lead to...

Hi Doug68,

Well, one lousy cell can lead to the solution not converging, but it doesn't necessarily mean that the results after 5000 iterations are completely useless. You'll have to take a look...

Forum: OpenFOAM Meshing & Mesh Conversion

June 28, 2012, 04:52

Replies: 18

[snappyHexMesh] An Epiphany (I think).

Views: 2,851

Posted By wyldckat

Hi Doug68, There is another trick that...

Hi Doug68,

There is another trick that sometimes works: center the STL and the base geometry in the space origin.
When the mesh is complete, move it back into place.

"How?" I expect you to ask...

Forum: OpenFOAM Meshing & Mesh Conversion

June 27, 2012, 15:13

Replies: 18

[snappyHexMesh] An Epiphany (I think).

Views: 2,851

Posted By wyldckat

Greetings Doug68, That sounds about right. ...

Greetings Doug68,

That sounds about right.
There are situations where that parameter might come in handy (i.e., to be >0), as any other parameter on "snappyHexMeshDict".

Additionally, there...

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