[MITgcm-support] A constant flow

[fancer fancer]

Dear Jean-Michel,
As I know The setting momStepping in false value turns off a calculation of
evolution of flux. But we need such calculations in our experiment. Are
there some other way to set constant background flow such as the river?

Dear Joseph,
Is it real to set current on eastern boundary as the river and to set flow
on western boundary as a barotropic tidal at the same time?

A little bit about experiment:
It will be a numerical experiment on pycnocline evolution in estuary under
irregular bottom.
In particular in first part of experiment we need to set an irregular
bottom, a constant background flow as the river flow, a periodic flow as a
barotropic tidal on a western boundary, and to set a distribution of
density.

I know how to set almost all these parameters. But I am not sure about
background flow.
Is my suggestion about redefinition external_forcing.F correctly? And can I
set the background flow just by adding a constant flow to gU array, for
example, in EXTERNAL_FORCING_U subroutine for all kLev?

Yours sincerely,
Sergey Semin

On Fri, Jul 8, 2011 at 2:26 AM, Jean-Michel Campin <jmc at ocean.mit.edu>wrote:

> Hi Sergey,
>
> I would propose to try the following:
> - set an initial flow field that corresponds to what you want.
> - turn off all the momentum (just specify:
>   momStepping=.FALSE.,
>  in parameter file "data", 1rst namelist)
> (this is how we do the advection tests with constant flow field,
>  see verification/advect_cs,  advect_xy & advect_xz )
>
> Cheers,
> Jean-Michel
>
> On Fri, Jul 08, 2011 at 01:12:21AM +0400, fancer fancer wrote:
> > Dear MITgcm users.
> >
> > I am trying to create the ocean numerical experiment with constant
> current,
> > in particular, the river with constant flow. As I understood I can add
> > permanent flux by redefining external_forsing.F file with needed flow
> speed.
> > Is it right?
> >
> > Are there some other easier approaches to implement this? Do exf-package
> has
> > some possibility to set constant current? I didn't find information about
> > this opportunity in manual.
> >
> > Thank You in advance.
> >
> > Yours sincerely,
> > Sergey Semin
>
> > _______________________________________________
> > MITgcm-support mailing list
> > MITgcm-support at mitgcm.org
> > http://mitgcm.org/mailman/listinfo/mitgcm-support
>
>
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mitgcm.org/pipermail/mitgcm-support/attachments/20110712/2268be79/attachment.htm>