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Solving flow past cylinder submerged near a free surface

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Old   September 19, 2019, 05:49
Default Solving flow past cylinder submerged near a free surface
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Greetings!

I am trying to simulate flow field of cylinder submerged near a free surface. I am not able to validate the results with the published literature even qualitatively under the same nondimensional parameters. I believe the problem might be in the boundary conditions.

I am attaching the boundary condition files for alpha, pressure and velocity. I need your kind feedback.

Thanks for your time.
Code:
//alpha
dimensions      [0 0 0 0 0 0 0];

internalField   uniform 0;

boundaryField
{
    inletAir
    {
        type            fixedValue;
        value           uniform 0;
    }
    inletWater
    {
        type            fixedValue;
        value           uniform 1;
    }
    outlet
    {
        type            zeroGradient;
    }

    ground
    {
        type            zeroGradient;
    }
    cylinder
    {
        type            zeroGradient;
    }
    sides
    {
        type            empty;
    }

    top
    {
        type            zeroGradient;
    }
}

Code:
//pressure
dimensions      [1 -1 -2 0 0 0 0];

internalField   uniform 0;

boundaryField
{
    inletAir
    {
        type            zeroGradient;
        value           uniform 0;
    }
    
    inletWater
    {
        type            zeroGradient;
        value           uniform 0;
    }

    outlet
    {
        type            zeroGradient;
        //p0              uniform 0;
    }

    ground
    {
        type            fixedFluxPressure;
        value           uniform 0;
    }
    top
    {
        type            fixedFluxPressure;
        value           uniform 0;
    }    
    cylinder
    {
        type            zeroGradient;
    }

    sides
    {
        type            empty;
    }

}
Code:
//Velocity
dimensions      [0 1 -1 0 0 0 0];

internalField   uniform (0.018 0 0);

boundaryField
{
    inletAir
    {
        type            fixedValue;
        value           uniform (0.018 0 0);
    }
    inletWater
    {
        type            fixedValue;
        value           uniform (0.018 0 0);
    }

    outlet
    {
        type            zeroGradient;
        value           uniform (0 0 0);
    }

    sides
    {
        type            empty;
    }

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

    top
    {
        type            slip;
    }
    ground
    {
        type            slip;
    }
}
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cylinder laminar, free surface flow, interfoam

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