Hello,
I am interested in i
Hello,
I am interested in implementing Mass and Heat transfer across the interface using VOF (interFoam solver), which requires an accurate description of the interfacial area in each cell. Can someone suggest a way to calculate the interfacial area using the present interFoam VOF implementation? Thanks in advance, 
Hi Vinay
Check out this li
Hi Vinay
Check out this link in the forum http://www.cfdonline.com/OpenFOAM_D...ges/1/172.html Regards Jaswinder 
The links seems to be dead.
C
The links seems to be dead.
Can anybody post the correct link of the discussion? Thanks allot in advance. Regards Fabian 
interface area
Did you ever find a solution to the problem of calculating the interface area within the cell?

hi friends
did you find any way to calculate interface area ? 
never found one
Hej,
I tried finding a solution, but I in the end created a model to simulate and predict the size of the interface area. I assumed that the size of the cell is regular. Then calculated the area that is double diagonal within the a regular cell (in this case a cube then) and varied the size of the interface area with the amount of alpha1 within the cell, max at 0.5 alpha1 and full size of the double diagonal area. Of course this can be made better. Additional information that can be used within such a model can be the velocity, the angle at which the interface is within the cell and the irregularity of the cell. 
hi roman
could you please describe ur method step by step or mathematically because i didnt get what you said :) it was ambiguous for me thanks in advance 
mathematical method
assume a regular cell. in the case of a hexahedral cell this means, a cube with sides of length a. This length is obtainable by using the volume of a cell,V , and taking the third root.
You can put a plane diagonally through the cube. The size of this plane is given by Amax =√(3) * V^(2/3) When the cell is now filled with phase 1, you can read the alpha1 value. The maximum area, Amax, is now varied based on the alpha1 value. with A = Amax*2 * alpha1; 0 ≤ α < 0.5 A = Amax*2(1alpha1); 0.5 ≤ α ≤ 1 The code that I used for this is Code:
Foam::tmp<Foam::volScalarField> 
thank roman but could please tell me how could u get "cellVolu" in ur code ?

create an accessible volume field
Hej,
I created a volume field in createFields.H Code:
// create access for cell volumes during runtime 
Length of the interface
Dear All,
I know this thread is old but, I would like to know how to calculate the length of the interface in interfoam ? 
One way if determining the interface size has been described in the previous posts. A length would not be a real size for a cells, as a cell 3D and you need an area.

Quote:

HI Foamers,
I am trying to implement Roman's code but I have following error: PHP Code:

I think to understand how the code is implemented, you need to take a look at how the other models for cavitationFoam are implemented. Different models could be chosen in version 1.7 for which this model was created. I am not sure what it looks like today (as of version 2.3 or 2.4).
The models that I implemented were not hard coded into the solver but where as all the other models selectable. 
Calculating interface area of a jet
Hi Foamers,
I am running some simulations on a jet impacting a quiescent pool with interFoam. I was wondering if there is any way that we can calculate the interfacial area of a jet at the impact location. Thanks in advance. 
Quote:
Quote:

Bruno thanks for the reply, but I am only interested in the interface area of the jet at the impinging location. The method described will calculate the interface area all over the pool and the bubbles beneath the surface, which I am not interested.
Thanks 
Greetings Hojjat,
Quote:
Problem is that you want to calculate the impact area between two fluids of the same ... er, wait, is it a jet of a fluid different from the quiescent fluid in the pool? In other words: without a clear picture/image of what you're trying to calculate, I don't know if it's even possible at all. At best, I can imagine it would be possible to calculate the area in a cross section of the domain that is operating at a certain flow speed for a specific phase. Best regards, Bruno 
All times are GMT 4. The time now is 03:16. 