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Forum: OpenFOAM

March 30, 2010, 13:16

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

Thank you so much for this advice, my simulation...

Thank you so much for this advice, my simulation seems to work now. It has to take some time to check whether it's working as I expect, but if not I will for sure ask more questions :P

Forum: OpenFOAM

March 30, 2010, 08:23

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

I haven't been using debug before and as far as I...

I haven't been using debug before and as far as I see in the foamDebugSwitches there is a lot of switches. Could you tell me (step-by-step) how should I use it to get some useful information?

Forum: OpenFOAM

March 27, 2010, 18:29

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

I did some changes of the conditions and my...

I did some changes of the conditions and my outlet looks as shown below:

0/alpha1
outlet
{
type groovyBC;
fractionExpression "(max(p) > 7e6) ? 0 : 1"
//valueExpression...

Forum: OpenFOAM

March 25, 2010, 14:44

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

Looks like there remains only one question to...

Looks like there remains only one question to solve, before I run the simulation. I mean how should I define BC for p (pressure)? I want to keep the idea of 1e5 MPa at the outlet when it's open.

...

Forum: OpenFOAM

March 25, 2010, 13:33

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

Ok, as far as I understood I can't use my...

Ok, as far as I understood I can't use my conditions explicitly, writing e.g.:
fractionExpression "(max(p) > 7e6) ? uniform 0 : zeroGradient"but what I can do is to switch between Dirichlet's or...

Forum: OpenFOAM

March 25, 2010, 12:06

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

This is actually what I expected from groovy... I...

This is actually what I expected from groovy... I was thinking about that in this way, so I tried to write something like this:

alpha1
outlet
{
type goovyBC;
valueExpression "p > 7e6 ?...

Forum: OpenFOAM

March 23, 2010, 12:22

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

Ok, I feel I wrote something entirely stupid :D...

Ok, I feel I wrote something entirely stupid :D It's obvious that it has to stay as a patch.... Sorry for that I'm just confused!!

Forum: OpenFOAM

March 23, 2010, 12:06

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

If you say groovyBC, then ok, but I would...

If you say groovyBC, then ok, but I would appreciate some help from expirienced users of this tool like you :) I need some more information.

I will focus now on the first idea - the checkValve...

Forum: OpenFOAM

March 23, 2010, 07:36

Replies: 18

boundaries and patches

Views: 3,900

Posted By piprus

boundaries and patches

Hi all,

I have some questions concerning patches in OpenFOAM.

Is it possible to define a patch which allows the medium (gas, liquid... doesn't matter) to pass through this patch only when the...

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