[MITgcm-support] Implimenting TIDAL forcing in momenteum equations

[Himansu Pradhan]

Ya Sir, i wanted to apply the body force everywhere and thus have edited
"model/src/external_forcing.F" .

In "external_forcing.F" i have edited both gU and gV :

         gU(i,j,kLev,bi,bj) = gU(i,j,kLev,bi,bj) + velocity1 * omega1 *
cos(omega1*myTime) + velocity2 * omega2 * cos(omega2 * myTime)

         gV(i,j,kLev,bi,bj) = gV(i,j,kLev,bi,bj)  + velocity1 * coriolis *
sin(omega1 * myTime) + velocity2 * coriolis * sin(omega2 * myTime)

The initial results looks fine to me ..... quite exicited with tht. :)  .
The attached figure "MITeta.jpg" : shows elevation at a certain location .
(any comments)

Now i have to deal with OBCs for the same experiment .

Thanks again for your valuable suggestation.



On Mon, Sep 10, 2012 at 1:26 PM, Martin Losch <Martin.Losch at awi.de> wrote:

> verification/internal_wave/code/obcs_calc.F
> shows how to do it for open boundaries. Maybe that's the best place to
> start.
>
> If you want to apply the body force everywhere, you should go to
> model/src/external_forcing.F. There you add your contribution to gU and gV
> (so gU = gU + tidal forcing). The new velocities are later computed from
> something like U = U + deltaT*gU, so your gU units should be velocity units
> per time.
>
> M.
>
> On Sep 9, 2012, at 8:26 PM, Himansu Pradhan wrote:
>
> > Dear MITgcm users ,
> >
> > I want to IMPLIMENT TIDAL forcing to the model to generate internal
> waves.
> >
> > I want to add this BODY Force to the zonal and meridional momenteum
> equations .
> > The forcing would be something like   " Force = Velocity * omega * sin
> (omega * time) "
> >
> > ( i have seen some modellers use this techinque to generate IWs using
> MITgcm).
> >
> > Do help me how to start ??? / which code to edit ........for
> implementing this in the momenteum equations...
> >
> > Any suggestations/help is deeply appreciated.
> >
> > Thanking all in advance.
> >
> > Himansu
> >
> >
> >
> >
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> > MITgcm-support at mitgcm.org
> > http://mitgcm.org/mailman/listinfo/mitgcm-support
>
>
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