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Search took 0.00 seconds. Search: Posts Made By: redhoax
Forum: OpenFOAM Running, Solving & CFD May 7, 2013, 04:08
Replies: 27
Views: 6,146
Posted By redhoax
Update: i've tried to eliminate possible sources...

Update: i've tried to eliminate possible sources of error, but in failing to locate the root cause i have now made the case a laminar one with a viscosity a 1000 times higher than normal. still,...
Forum: OpenFOAM Running, Solving & CFD May 6, 2013, 20:54
Replies: 27
Views: 6,146
Posted By redhoax
Hello!:-) i updated the case. the solution...

Hello!:-)

i updated the case. the solution is not diverging now, however...

i'm struggling with what seems to me as reversed flow from the outlet patch. at both top and bottom corner along the...
Forum: OpenFOAM Running, Solving & CFD May 5, 2013, 18:32
Replies: 27
Views: 6,146
Posted By redhoax
wow, i'm so sorry. i discovered that myself the...

wow, i'm so sorry. i discovered that myself the same day(just after) i updated the dropbox case and corrected it. mustve forgot to upload the corrected one. I will however test higher k-Epsilon...
Forum: OpenFOAM Running, Solving & CFD April 16, 2013, 23:49
Replies: 27
Views: 6,146
Posted By redhoax
I updated the case and shared it with you on...

I updated the case and shared it with you on Dropbox. At the moment I'm experimenting with different variables, such as wind inlet velocity and fuel rate, and trying to decide how to make the...
Forum: OpenFOAM Running, Solving & CFD March 19, 2013, 21:22
Replies: 27
Views: 6,146
Posted By redhoax
Hello. Just a short update. I created a much...

Hello. Just a short update.

I created a much simpler 2D case with blockMesh, 6mx1.2m. Working on implementing log velocity profile with swak4foam to replace the ablinlet used with simpleFoam. This...
Forum: OpenFOAM Running, Solving & CFD March 10, 2013, 07:25
Replies: 27
Views: 6,146
Posted By redhoax
woah, thanks a lot! i'll go through my case...

woah, thanks a lot!

i'll go through my case real thorough before i get back to you, but eventually i'll give you an update on my progress:)

Lasse
Forum: OpenFOAM Running, Solving & CFD March 6, 2013, 11:35
Replies: 27
Views: 6,146
Posted By redhoax
Smile figured I'd post an overview of challenges going...

figured I'd post an overview of challenges going from last converged solution to the current version:

- kOmegaSST vs kEpsilon
- SS vs transient
- perhaps some BCs under 0/, not sure about this...
Forum: OpenFOAM Running, Solving & CFD March 6, 2013, 05:30
Replies: 27
Views: 6,146
Posted By redhoax
Post Hehe. It is meant to be in meters. The reason for...

Hehe. It is meant to be in meters. The reason for this is, apparently, it is customary to have 1-2 platform lengths in front and behind of the platform as domain dimensions. Something of the sort...
Forum: OpenFOAM Running, Solving & CFD March 6, 2013, 05:06
Replies: 27
Views: 6,146
Posted By redhoax
Post steady state. specific value for pressure is set...

steady state. specific value for pressure is set to 0 m^2/s^2.

internalField uniform $pressure;

boundaryField
{
inlet
{
type zeroGradient;
}
Forum: OpenFOAM Running, Solving & CFD March 3, 2013, 07:32
Replies: 27
Views: 6,146
Posted By redhoax
Post rough work log

Im using OF21x and Salome 6.4.
Case setup is like this:

I have a mesh from Salome. It's an open space with a 'platform' in it (4xcylinder for legs, 1xbox on top, and 1 last cylinder for gas leak...
Forum: OpenFOAM Running, Solving & CFD March 2, 2013, 08:51
Replies: 27
Views: 6,146
Posted By redhoax
Hello Bruno - and thank you for your response :) ...

Hello Bruno - and thank you for your response :)

I did discover those debugging pages late on friday, but haven't had the chance to test them out yet. I do not have the code available today, but I...
Forum: OpenFOAM Running, Solving & CFD March 1, 2013, 09:54
Replies: 27
Views: 6,146
Posted By redhoax
Post laminar

I changed the simulationType to laminar and now the error message changed, so definitely the original one is connected to turbulence. However, the new one looks like this:

#0 ...
Forum: OpenFOAM Running, Solving & CFD March 1, 2013, 08:57
Replies: 27
Views: 6,146
Posted By redhoax
update

So I've discovered it's about "bad mathematics", such as dividing by zero etc.

I tried to turn turbulence off because I thought that might be the issue, but the error message remains the same.
...
Forum: OpenFOAM Running, Solving & CFD March 1, 2013, 07:21
Replies: 27
Views: 6,146
Posted By redhoax
Question Gas dispersion in air error message

Hi. I'm running a reactingFoam case. kOmegaSST for turbulence, CH4 dispersion in air. no chemistry, no combustion. I get an error message that I'm not capable of interpreting, and was hoping maybe...
Forum: OpenFOAM Running, Solving & CFD February 27, 2013, 11:03
Replies: 27
Views: 6,146
Posted By redhoax
Question Gas dispersion in air error message

Hello. This is my first post here (after some time lurking) so please be gentle.

I've recently picked up OF and am a novice to the tool.

My case is dispersion of CH4 in an open environment...
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