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two phase flow by interfoam

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Old   June 30, 2014, 04:17
Default two phase flow by interfoam
  #1
Member
 
Ali reza
Join Date: Mar 2014
Posts: 95
Rep Power: 3
1988 is on a distinguished road
Hi
I have tried to simulate a T-junction multiphase flow by OpenFOAM and I face with some difficulties for example droplets are not formed and I don't know whats the problem. I have attached the picture of flow which is formed instead of droplets ,could you please take a look at this and help me .
This is a micro channel which has been made by two lateral channels and one main channel. Blue color is an oil(continuous phase) in main channel and the red one is water (dispersed phase) which is flow in two lateral channels.
It has been simulated with and without contact angel
I am not sure for which phase I should define capillary number .
these are my boundary conditions:
alpha water

Code:
dimensions      [0 0 0 0 0 0 0];

internalField   uniform 0;

boundaryField
{
   oil
    {
        type            fixedValue;
	value		uniform 1.0;
    }
    water-1
    {
        type            fixedValue;
	value		uniform 0.0;
    }
     water-2
    {
        type            fixedValue;
	value		uniform 0.0;
    }
    outlet
    {
        type            inletOutlet;
        inletValue      uniform 0;
        value           uniform 0;
    }

    walls
    {
        type            zeroGradient;
    }
 

    defaultFaces
    {
        type            empty;
    }


}
alpha water.org
Code:
dimensions      [0 0 0 0 0 0 0];

internalField   uniform 0;

boundaryField
{
   oil
    {
        type            fixedValue;
	value		uniform 1.0;
    }
    water-1
    {
        type            fixedValue;
	value		uniform 0.0;
    }
     water-2
    {
        type            fixedValue;
	value		uniform 0.0;
    }
    outlet
    {
        type            inletOutlet;
        inletValue      uniform 0;
        value           uniform 0;
    }

    walls
    {
        type            zeroGradient;
    }
 

    defaultFaces
    {
        type            empty;
    }


}
U
Code:
dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (0 1 0);

boundaryField
{
   oil 
    {
        type            fixedValue;
        value           uniform (0.00138888889 0 0);

    }
    
    water-1
    {
        type            fixedValue;
        value           uniform (0 -0.0002511111 0);
    }
    water-2
    {
        type            fixedValue;
        value           uniform (0 -0.000651111111 0);
    }

    outlet
    {
        type		zeroGradient;
    }

    walls
    {
        type            fixedValue;
        value           uniform (0 0 0);
    }

}
P-rgh
Code:
dimensions      [1 -1 -2 0 0 0 0];

internalField   uniform 0;

boundaryField
{
    oil
    {
        type            zeroGradient;
    }
    water-1
    {
        type            zeroGradient;
    }
    water-2
    {
        type            zeroGradient;
    }
    outlet
    {
        type            fixedValue;
	value		uniform 0;
    }

    walls
    {
        type            zeroGradient;
    }

   
}
thanks in advance for any help
Attached Images
File Type: png 5555.png (3.8 KB, 29 views)
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Old   July 2, 2014, 09:12
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  #2
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Ali reza
Join Date: Mar 2014
Posts: 95
Rep Power: 3
1988 is on a distinguished road
There is no one to help?it is not an interesting topic?
1988 is offline   Reply With Quote

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