[cfd_saad]

Hi Foamers,

I am studying a breakwater and I would like to generate irregular waves (JONSWAP spectra), I found in the tutorials, in the waves folder the following :

- waveMakerPiston, uses a dynamic mesh with the following pointDisplacement file in 0.orig :

/*--------------------------------*- C++ -*----------------------------------*\
| =========                 |                                                 |
| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
|  \\    /   O peration     | Version:  v2012                                 |
|   \\  /    A nd           | Website:  www.openfoam.com                      |
|    \\/     M anipulation  |                                                 |
\*---------------------------------------------------------------------------*/
FoamFile
{
    version     2.0;
    format      ascii;
    class       pointVectorField;
    object      pointDisplacement;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions      [0 1 0 0 0 0 0];

internalField   uniform (0 0 0);

boundaryField
{
    bottom1
    {
        type            zeroGradient;
    }

    bottom2
    {
        type            fixedValue;
        value           uniform (0 0 0);
    }

    leftwall
    {
        type            waveMaker;
        value           uniform (0 0 0);

        motionType      piston;
        n               (1 0 0);
        waveHeight      0.06;
        initialDepth    0.25;
        wavePeriod      2.0;
        rampTime        2.0;
        wavePhase       0;
    }

    back
    {
        type            empty;
    }

    front
    {
        type            empty;
    }

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

    top
    {
        type            zeroGradient;
    }
}


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

The conditions in the leftwall, generate only one wave ? How can I generate multiple waves by indicating the speed in x and y of the piston ?

- irregularMultiDirectional, generates irregular waves in a static mesh, I don't understand how this file works, how can I input a JONSWAP type spectra in this file ?

I don't post it here because it is too long (it is here in waveProperties file : https://develop.openfoam.com/Develop...ction/constant )

Thanks!!

[cfd_saad]

any ideas ?

[cfd_saad]

here you can found information on how to generate irregular waves with a piston and without a piston :

https://knu.readthedocs.io/en/latest...eurPiston.html