CFD Online Discussion Forums - Define water level in icoFOam

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Define water level in icoFOam

Hi everyone,

perhaps someone could help me with the icoFom solver.
I build up with blockMesh a tank with a tiny output for water discharge.

With the setFieldsDict File i defined a water level in the tank for the first simulation step.

Code:

FoamFile

{

    version     2.0;

    format      ascii;

    class       dictionary;

    location    "system";

    object      setFieldsDict;

}

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //



defaultFieldValues

(

    volScalarFieldValue alpha.water 0

);



regions

(

    boxToCell

    {

        box (0.01 0.51 -0.05) (2.99 1 0.05);

        fieldValues

        (

            volScalarFieldValue alpha.water 1

        );

    }

);

This is my alpha.water File:

Code:

FoamFile

{

    version     2.0;

    format      ascii;

    class       volScalarField;

    object      alpha.water;

}

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //



dimensions      [0 0 0 0 0 0 0];



internalField   uniform 0;



boundaryField

{

    inlet

    {

             type        zeroGradient;

      

    }

    outlet

    {

             type        zeroGradient;

    }



    fixedWalls

    {

             type        zeroGradient;

    }

defaultFaces

    {

        type            empty;

    }



}

Now i am searching for a solver (to define the fvSolution File) in icoFoam to solve alpha.water.

In the end it should be a nearly constant water level and a constant discharge to prove Toricellis law.

I am just using OpenFOAM since 3 weeks, so i am really a newbie;)

Thank you very much for your help or new thought processes!

Define water level in icoFOam

Hi everyone,

im searching for a way to define a beginning water level in an open tank with icoFoam.

I tried it with the SetFiledsDict, but it seems very complicated, because then i have to define an alpha.water File and also a solver in the fvSolution FIle to solve alpha.water.

Is there an easy way to just define a starting water level?

Thank you very much!!! I am very thankful for new thought processings, cause im very new in OpenFOAM...

Thanks

Steffen

do you want to solve two phase flow problem? Because if you do, I think rather than using icoFoam, you probably want to use a multiphase solver, instead.

And yes, setFieldDicts can be used and maybe the easiest way to define the initial condition (incl. beginning level)

Hi,

thank you very much for your reply!

No i just want to calculate the discharge of an open container with a beginning water level.

My problem is that i dont know how to set a begining water level, without defining a water phase (alpha.water), that openfoam has to solve...

Hi
icoFoam is single phase incompressible solver.
Look at interFoam solvers (multiphase) for solving your problem.