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Search took 0.00 seconds. Search: Posts Made By: voingiappone
Forum: OpenFOAM Programming & Development November 25, 2014, 13:19
Replies: 41
Views: 13,710
Posted By voingiappone
Hi Izhou! First of all, if you're dealing...

Hi Izhou!

First of all, if you're dealing with suspended solids, I seem to recall that a multiphase interFoam is available where you can model them. Did you give it a shot?

Anyway, if you want...
Forum: OpenFOAM Programming & Development April 9, 2014, 23:28
Replies: 41
Views: 13,710
Posted By voingiappone
Sorry, I forgot to specify that DC is a new...

Sorry, I forgot to specify that DC is a new variable defined as the product between the diffusion coefficient and the equilibrium concentration.
Forum: OpenFOAM Programming & Development April 9, 2014, 23:27
Replies: 41
Views: 13,710
Posted By voingiappone
Hi Jonas, you did not explain which problem...

Hi Jonas,

you did not explain which problem you are facing so I just try to guess. The only problem I had to implement the code in the C file was that you use an already calculated field (alpha1)...
Forum: OpenFOAM Programming & Development October 8, 2013, 21:45
Replies: 41
Views: 13,710
Posted By voingiappone
Hello vishal, first of all let me tell you that I...

Hello vishal, first of all let me tell you that I don't use that particular software so I may not be the best person to ask to....
For what I was able to read on the forum, that solver is used when...
Forum: OpenFOAM Programming & Development December 18, 2012, 22:17
Replies: 41
Views: 13,710
Posted By voingiappone
Cyp, you're the man! The problem was...

Cyp,

you're the man! The problem was (almost) completely solved using your approach! I had some problems after inserting the alpha laplacian in the .C file as I had to specify to solve it as an...
Forum: OpenFOAM Programming & Development December 18, 2012, 04:33
Replies: 41
Views: 13,710
Posted By voingiappone
Howdy Cip, got the point! I'll see if I can...

Howdy Cip,

got the point! I'll see if I can find some time to implement the equation in the code and run a test simulation so I can get back here and report the result.

Thanks!

Luca
Forum: OpenFOAM Programming & Development December 16, 2012, 22:36
Replies: 41
Views: 13,710
Posted By voingiappone
Hello Cyp, and thanks for the development of the...

Hello Cyp, and thanks for the development of the equations!

Taking another way I got to the same result but in my case it was inserted in the context of the equation I shown some posts above. I...
Forum: OpenFOAM Programming & Development December 16, 2012, 01:54
Replies: 41
Views: 13,710
Posted By voingiappone
Hello Cyp! Thanks a lot for the post you...

Hello Cyp!

Thanks a lot for the post you linked! That looks like the perfect solution! Defining C on the whole domain and then apply the derivatives was actually something I thought about but...
Forum: OpenFOAM Programming & Development December 15, 2012, 01:01
Replies: 41
Views: 13,710
Posted By voingiappone
Hello Olivier, thanks for your suggestion. ...

Hello Olivier, thanks for your suggestion.
Unfortunately I have tried the Euler-Euler solver many times and no matter what I do and how I initialize the domain, I never end up with a realistic fluid...
Forum: OpenFOAM Programming & Development December 14, 2012, 02:50
Replies: 41
Views: 13,710
Posted By voingiappone
You're right, no physical meaning in all this. I...

You're right, no physical meaning in all this. I came to this conclusion just following what michielm suggested which is "non physical".
By the way, if I do directly multiplying by alpha1, the...
Forum: OpenFOAM Programming & Development December 14, 2012, 01:39
Replies: 41
Views: 13,710
Posted By voingiappone
Thank you very much for the formula! The solver...

Thank you very much for the formula! The solver compiles flawlessly and I was able to run a test simulation with no problems.
Regarding the lost concentration, I am afraid that this may be a major...
Forum: OpenFOAM Programming & Development December 13, 2012, 07:32
Replies: 41
Views: 13,710
Posted By voingiappone
This makes sense... it is the same in the...

This makes sense... it is the same in the Temperature equation. Sorry for pointing to a bad formula.

So, if I got the point right I should solve the equation "as is" (using phi) and then multiply...
Forum: OpenFOAM Programming & Development December 13, 2012, 07:00
Replies: 41
Views: 13,710
Posted By voingiappone
I suppose you're right but I actually don't have...

I suppose you're right but I actually don't have many things to show.

The equation I would like to implement is really basic: if I neglect the diffusion (as the coefficient is 10^-9 order):
...
Forum: OpenFOAM Programming & Development December 13, 2012, 06:02
Replies: 41
Views: 13,710
Posted By voingiappone
@Bernhard I was already aware of that.... or...

@Bernhard

I was already aware of that.... or at least I was imagining that such a behaviour could cause problems.

@nimasam

I would like to do that but I lack the ability to create functions,...
Forum: OpenFOAM Programming & Development December 13, 2012, 04:13
Replies: 41
Views: 13,710
Posted By voingiappone
Bernhard, thank you for the precious hint! I...

Bernhard,

thank you for the precious hint! I thought that the equations were solved for both the phases... but then, where the alpha1 parameter meaning goes??
So, you are right and I should take...
Forum: OpenFOAM Programming & Development December 13, 2012, 00:08
Replies: 41
Views: 13,710
Posted By voingiappone
InterFoam: Add an equation to only one phase

Hello again everybody,

as I already explained here (http://www.cfd-online.com/Forums/openfoam-post-processing/110417-calculate-mixing-time-using-tracer.html), I want to insert a tracer in my...
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