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Forum: OpenFOAM Running, Solving & CFD September 17, 2015, 15:44
Replies: 37
Views: 12,875
Posted By Andrea_85
Hi Daniel, i made the script a long time ago...

Hi Daniel,

i made the script a long time ago and i am not using it anymore..it took me a while to figure out what i did :).
Anyway, as you said the multiplication with rho does not have an...
Forum: OpenFOAM Running, Solving & CFD September 18, 2012, 03:44
Replies: 37
Views: 12,875
Posted By Andrea_85
Hi, the lib forces.C calcualtes pressure and...

Hi,
the lib forces.C calcualtes pressure and viscous force exerted by a fluid on a solid surface. If you take a look at forces.C you will see you have to specify a patch where the force is...
Forum: OpenFOAM Running, Solving & CFD June 4, 2012, 09:06
Replies: 37
Views: 12,875
Posted By Andrea_85
Hi, here is a summary of what i have done: ...

Hi,
here is a summary of what i have done:

1-i created my own library called forceMultiPhase

2- in forceMultiPhase.C

1) where devRhoReff() is calculated
Forum: OpenFOAM Running, Solving & CFD March 22, 2012, 11:12
Replies: 37
Views: 12,875
Posted By Andrea_85
Hi mauricio, thanks for your interest in my...

Hi mauricio,
thanks for your interest in my post. Yes, i tried to refine the mesh but with no succes in reduce the oscillation. Even use totalPressure instead of fixedPressure bc does not seem to...
Forum: OpenFOAM Running, Solving & CFD March 21, 2012, 09:44
Replies: 37
Views: 12,875
Posted By Andrea_85
HI again mauricio, I'm really familiar with...

HI again mauricio,

I'm really familiar with that paper but i think, at moment, spurios current in interFoam is something you have to "live with". Anyway i uploaded the case if you want to give a...
Forum: OpenFOAM Running, Solving & CFD March 19, 2012, 11:27
Replies: 37
Views: 12,875
Posted By Andrea_85
Hi mauricio that's what I thought. The Re is...

Hi mauricio

that's what I thought. The Re is around 1600 for the higher gravity case and maybe this could cause the shift. and what's your opinion about the oscillation? The velocity field is more...
Forum: OpenFOAM Running, Solving & CFD March 16, 2012, 09:44
Replies: 37
Views: 12,875
Posted By Andrea_85
Hi again, i would like to share my test case. I...

Hi again,
i would like to share my test case. I finally decided to test force calculation on this case: a slug in a vertical capillary tube with fixed contact angle that moves under gravity. The...
Forum: OpenFOAM Running, Solving & CFD March 8, 2012, 04:03
Replies: 37
Views: 12,875
Posted By Andrea_85
Hi Dave, you are right but i'm working with...

Hi Dave,
you are right but i'm working with multiphase flow and my cases are always laminar (0.01<Re<1), for turbulence cases the approach has to be corrected. What i have done is basically create a...
Forum: OpenFOAM Running, Solving & CFD March 5, 2012, 11:25
Replies: 37
Views: 12,875
Posted By Andrea_85
Hi Niaz and Calim, thanks for your suggestions....

Hi Niaz and Calim,
thanks for your suggestions. This is what i've done:

in forces.C where devRhoReff() is calculated i added:

dimensionedScalar...
Forum: OpenFOAM Running, Solving & CFD March 2, 2012, 04:24
Replies: 37
Views: 12,875
Posted By Andrea_85
Thanks niaz, I thought it was not suitable for...

Thanks niaz,
I thought it was not suitable for this, just to be sure.
Now what i want to do is try to calculate pressure and viscous forces
separately in both phases (maybe based on alpha)....
Forum: OpenFOAM Running, Solving & CFD March 1, 2012, 04:11
Replies: 37
Views: 12,875
Posted By Andrea_85
Force calculation in multiphase simulations

HI all,

Does force calculation work for multiphase cases?. If i try to add these lines below to my controldict in damBreak example:

functions
(
forceA
{
type forces;
functionObjectLibs...
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