[Akshay_11235]

I am trying to model a wave over a sloping beach profile using OpenFOAM-v1806. When I use the stokesI model with rampTime ~ wave Period or 2*wavePeriod, I observe that air is drawn into the flow depth. This makes it difficult to compare the wave model with the experimental data. Is there something I am missing? I do not want the air to be entrained this way at the boundary condition.



I have tried to force water inflow using the following line of code in the 0/U boundary definition


inlet
{
type waveAlpha;
value uniform (0 0 0);
alpha alpha.water;
}


However, this does not work. Please have a look at the image I have included. I have also included the OpenFOAM files in the waveModel.zip attachment.

Any suggestions would be appreciated, thank you!

[Akshay_11235]

In case you are struglling with the same problem, there was an inconsistent boundary condition in alpha.water for inlet. It should not be zeroGradient but waveAlpha just like the velocity boundary condition.