[Blanche]

Hi,
I am new here. I want to simulate a fixed Gas-water two phase field in a cylinder using interFoam solver(like Fig.1). The inlet is divided into two parts which in1 is gas and in2 is water. I refer to the model of the dambreak. But when I run the interFoam, the result is not right(like Fig2). I don't know where is wrong. The U is that,

internalField uniform (1 0 0);
boundaryField
{
in2
{
type fixedValue;
value uniform (2.21 0 0);
}
in1
{
type fixedValue;
value uniform (1.1 0 0);
}
out
{
type zeroGradient;
}
bimian
{
type fixedValue;
value uniform (0 0 0);
}

and the P is that,

internalField uniform 0;
boundaryField
{
in2
{
type zeroGradient;
}
in1
{
type zeroGradient;
}

out
{
type fixedValue;
value uniform 101325;
}

bimian
{
type zeroGradient;
}

}

Then I defined a small outlet velocity, it doesn't work. In this case, gas velocity is small than water velocity. I have ever calculated 200 minutes, and finally turned into a laminar flow(like Fig3). I hope I can get some advice. Thank you!

All best.

[Tomatenbart]

Do you have a plain p file or a p_rgh file in your 0 folder?

I'm also unsure about your pressure at the outlet. Try setting it to uniform zero. Maybe have a look at the tutorials in multiPhase/interFoam/laminar.

[Blanche]

Originally Posted by Tomatenbart

Do you have a plain p file or a p_rgh file in your 0 folder?

I'm also unsure about your pressure at the outlet. Try setting it to uniform zero. Maybe have a look at the tutorials in multiPhase/interFoam/laminar.

Thank you for your reply. I have tried. But there is nothing change. I modified the interFoam/ras/damBreak. I still don't know where is wrong.

[Tomatenbart]

What exactly did you try or which changes did you apply?


Sent from my iPhone using CFD Online Forum mobile app