How PotentialFreeSurfaceFoam Calculate "Zeta"

xiaofishnus · January 23, 2015, 02:31

Hi, there

I am learning the PotentialFreeSurfaceFoam. Can anybody provide me the related reference about this FOAM? Can anybody brief me how the FOAM calculate 'zeta'. In the source code I just see the definition of zeta in createFields.H. I did not see any other code which explicitly calculates 'zeta'.

Thanks a lot!

alexeym · January 23, 2015, 03:31

Hi,

If you take a look at potentialFreeSurfaceFoam.C, you will see the following:

Code:

Description
    Incompressible Navier-Stokes solver with inclusion of a wave height field
    to enable single-phase free-surface approximations

    Wave height field, zeta, used by pressure boundary conditions

    Turbulence modelling is generic, i.e. laminar, RAS or LES may be selected.

If user set IC for zeta, the field will be read, otherwise it will be zero. Then the field can be used by BCs (waveSurfacePressure for example) but it is not recalculated in potentialFreeSurfaceFoam.

xiaofishnus · January 25, 2015, 21:06

Thanks for your reply.

Could you please recommend some references related to potentialFreeSurfaceFoam?

Thanks.

January 23, 2015, 02:31	How PotentialFreeSurfaceFoam Calculate "Zeta"	#1
xiaofishnus New Member Join Date: Oct 2014 Posts: 9 Rep Power: 11	Hi, there I am learning the PotentialFreeSurfaceFoam. Can anybody provide me the related reference about this FOAM? Can anybody brief me how the FOAM calculate 'zeta'. In the source code I just see the definition of zeta in createFields.H. I did not see any other code which explicitly calculates 'zeta'. Thanks a lot! me.ouda, davibarreira, apal and 1 others like this.

January 23, 2015, 03:31		#2
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,930 Rep Power: 38	Hi, If you take a look at potentialFreeSurfaceFoam.C, you will see the following: Code: Description Incompressible Navier-Stokes solver with inclusion of a wave height field to enable single-phase free-surface approximations Wave height field, zeta, used by pressure boundary conditions Turbulence modelling is generic, i.e. laminar, RAS or LES may be selected. If user set IC for zeta, the field will be read, otherwise it will be zero. Then the field can be used by BCs (waveSurfacePressure for example) but it is not recalculated in potentialFreeSurfaceFoam.

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January 25, 2015, 21:06		#3
xiaofishnus New Member Join Date: Oct 2014 Posts: 9 Rep Power: 11	Thanks for your reply. Could you please recommend some references related to potentialFreeSurfaceFoam? Thanks.