[MITgcm-support] flow over 3d Gaussian topography

[Martin Losch]

Subhajit,

what’s wrong with the figure? What do you expect?

on the open boundaries, etaN is always set to zero (if you don’t use the nonlinear free surface). These grid points don’t “belong” to the model domain where etaN is solved for.

Periodic boundary conditions: just turn off the open boundary package (useOBCS = .FALSE. in data.pkg).

Martin


> On 26. Dec 2017, at 16:20, subhajit kar <subhajitkar19 at gmail.com> wrote:
> 
> Hi all,
> 
>    I am trying model a flow over a Gaussian topography using exp4 example. 
> 
>    I should a surface imprint of topography on the free surface according to hydraulic theory.
> 
>    I am getting something which is not exactly surface imprint. I have attached a snapshot of surface elevation due to topography.
> 
>    Also the boundary has a zero surface height value.
> 
>    Is there any way I can give a periodic boundary condition?
> 
>  
> Thanks,
> Subhajit   
> <eta.png>_______________________________________________
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