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Search: Posts Made By: chegdan
Forum: OpenFOAM February 20, 2012, 13:30
Replies: 20
Views: 3,523
Posted By chegdan
Hsingtzu, Ok..I glanced at the case file and...

Hsingtzu,

Ok..I glanced at the case file and you have some problems. You have an inlet velocity and then many outflow (zeroGradient) boundary conditions for the velocity field. If you are...
Forum: OpenFOAM December 5, 2011, 13:14
Replies: 20
Views: 3,523
Posted By chegdan
ok, starting to get somewhere. 1. you have...

ok, starting to get somewhere.

1. you have some velocity inlets and those need to be type patch, outlets also need to be type patch instead of wall.

2. at pressure outlets, you need a...
Forum: OpenFOAM December 2, 2011, 11:01
Replies: 20
Views: 3,523
Posted By chegdan
Good point! Also, for walls in your...

Good point!

Also, for walls in your geometry...the patch type in the blockMeshDict should be wall and not patch.
* By setting a zeroGradient for velocity at the cylinder patch with patch...
Forum: OpenFOAM December 1, 2011, 12:58
Replies: 20
Views: 3,523
Posted By chegdan
hsingtzu, I tried your case and there are...

hsingtzu,

I tried your case and there are several issues.
1. I rebuilt your mesh from the blockMeshDict you provided and it looks like the image below. is there something more that you do to...
Forum: OpenFOAM November 30, 2011, 16:04
Replies: 20
Views: 3,523
Posted By chegdan
What does your mesh look like? does it pass the...

What does your mesh look like? does it pass the checkMesh -allTopology -allGeometry utility? If you want to post your solver and case, I can take a quick look at it.

Dan
Forum: OpenFOAM September 9, 2011, 10:53
Replies: 20
Views: 3,523
Posted By chegdan
What happened before the error message? ...

What happened before the error message?


Floating point exception


getting this after a few successful iterations probably means that you were getting some really large numbers...hence...
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