[andreas]

Hello,

I'm new in CFD and would like to know how to write the initial conditions for an incompressible fluid between two plane surfaces. I used channelFlow for the mesh, but have to change the 0 folder.

My initial conditions are:
p_inlet = p_outlet
V_initial = 5 m/s

As you imagine, the fluid will slow down untill it stops since there is no pressure gradient.

My initial pressure conditions are:

dimensions      [0 2 -2 0 0 0 0];

internalField   uniform 1;

boundaryField
{

    inlet
    {
        type            fixedValue;
    value        uniform 1;
    }

    outlet
    {
        type            fixedValue;
    value        uniform 1;
    }

    upAndDown
    {
        type            zeroGradient;
    }
    frontAndBack
    {
        type            empty;
    }
}

My initial speed conditions are:

dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (5 0 0);

boundaryField
{
    inlet
    {
        type            cyclic;
    }

    outlet
    {
        type            cyclic;  
    }

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

    frontAndBack
    {
        type            empty;
    }
}

But when I try to push the "apply" button on paraFoam, it automaticaly closes and I come back to the terminal window.

Thanks for your help,
Andreas