[MITgcm-support] no_slip_bottom and bottomDragLinear questions

[Martin Losch]

Hi David,
please have a look at pkg/mom_common/mom_u/v_bottomdrag.F
There you'll see that no_slip_bottom and bottomDragLinear/Quadratic  
are independent (although, it does not make too much sense to have  
bottom drag and free slip, right?).

Simulations are probably similar, because with a castellated  
topography, you'll effectively always have no slip solutions, see  
Adcroft+Marshall(1998, JMR)

Martin

On 16 Nov 2008, at 04:34, David Hebert wrote:

> Hi everyone,
>
> I ran two simulations, one with no_slip_bottom=.TRUE., and one with
> no_slip_bottom=.FALSE.. The differences were minor, and noticed I  
> inadvertently had
> bottomDragLinear=0.0 in data file for both simulations. I'm  
> wondering if having
> bottomDragLinear=0 really ran the no_slip_bottom=TRUE simulation as  
> a free-slip bottom?
> Or if it is a parameter to increase what might occur simply through  
> calculation by
> setting bottom velocity to zero.
>
> Thanks for your assisstance,
>
> David
>
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