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Forum: OpenFOAM Pre-Processing

June 11, 2010, 01:09

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Thanks for the input. I found that I set the...

Thanks for the input. I found that I set the phase interfacial properties incorrectly and as a result it affected the convergence. It seems to be working now.

I am currently looking into...

Forum: OpenFOAM Pre-Processing

May 30, 2010, 18:01

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Hey Alberto, I have done the following - ...

Hey Alberto,

I have done the following -

1) decrease the maxdeltaT to 1e-7 (My mistake in the previous thread :rolleyes:)

2) changed the velocities to more realistic figures (1 and 10m/s...

Forum: OpenFOAM Pre-Processing

May 30, 2010, 01:19

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Hey I have been experimenting with the...

Hey

I have been experimenting with the twoPhaseEulerFoam and been applying it to a 10inch pipe with non uniform B.C to determine its accuracy. The conditions were applied with funkySetFields and...

Forum: OpenFOAM Pre-Processing

May 26, 2010, 00:41

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Thanks for the reply, Well I actually need...

Thanks for the reply,

Well I actually need to simulate what is occuring at the interface as at high differential phase velocities the shear forces is high resulting in large pressure drop which I...

Forum: OpenFOAM Pre-Processing

May 25, 2010, 16:06

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Hey Alberto From your experience modelling...

Hey Alberto

From your experience modelling two phase systems which solver would you have chosen to model two phase flow in pipes. The reason why I ask is that I have used both the interFoam (VOF)...

Forum: OpenFOAM Pre-Processing

May 23, 2010, 03:31

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Yea its not really ideal and I do agree as there...

Yea its not really ideal and I do agree as there is so many different aspect of the software which I need to learn. When it comes to my problem the tips you provided finally allowed me to get some...

Forum: OpenFOAM Pre-Processing

May 23, 2010, 01:52

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Thank you for your advice, I have done some of...

Thank you for your advice, I have done some of those tutorials but due to the tight time schedules I am on I kinda have to dive into the deep end (its kinda a do or die situation). By saying it...

Forum: OpenFOAM Pre-Processing

May 22, 2010, 22:24

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

I have been attempting to run a uniform BC...

I have been attempting to run a uniform BC scenario as detailed in one of your previous threads but I keep getting this error message when I try and run the solver

"DILUPBiCG: Solving for alpha,...

Forum: OpenFOAM Pre-Processing

May 21, 2010, 03:17

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

I do have a couple but depends how easy it will...

I do have a couple but depends how easy it will be to implement as I am new to openFOAM. I was considering implementing a piece-wise function which will apply a uniform mean velocity for each phase...

Forum: OpenFOAM Pre-Processing

May 20, 2010, 21:58

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Thats what I was going to attempt first. When it...

Thats what I was going to attempt first. When it comes to the twoPhaseEuler solver is there a beta phase file similiar to the alpha phase? Or is this automatically derived from the alpha file.
...

Forum: OpenFOAM Pre-Processing

May 20, 2010, 20:02

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Thats great. Do we need to specify the internal...

Thats great. Do we need to specify the internal field values for Ua, Ub and alpha or do I need to leave them at 0? We are assuming that the phase mass flow rates state constant but in reality there...

Forum: OpenFOAM Pre-Processing

May 20, 2010, 18:50

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Thank you again for your input Sorry about...

Thank you again for your input

Sorry about that, let me reword my problem. I am studying stratified horizontal two-phase flow (steam and water) where I would like to determine the pressure drop...

Forum: OpenFOAM Pre-Processing

May 20, 2010, 15:58

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Thank you for your input. It seems the...

Thank you for your input.

It seems the twoPhaseEuler solver will be the best option. A question I do have is that we are mainly concerned with setting up the phase velocities depending on the...

Forum: OpenFOAM Pre-Processing

May 19, 2010, 05:29

Replies: 31

Stratified Two-Phase Flow

Views: 10,177

Posted By metro

Stratified Two-Phase Flow

Hi,

I am currently attempting to model stratified flow in horizontal pipeline (water/steam) and is new to openFOAM. I would like to implement non-uniform boundary conditions for each phase but is...

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