[aspect-devel] boundary pb

[Rene Gassmoeller]

Hi all,
I can confirm Cedric's observations, and I think it stems from the
scaling of gravity and thermal expansivity to 10^10 ... if you lower
this to 10^5 the asymmetry vanishes (at least here in my model). Might
it have to do with our pressure_scaling, which is calculated as
viscosity over length_scale and that does not change, when you increase
gravity, although the pressure will increase by this? Any ideas?

Best,
Rene

On 09/18/2014 02:47 PM, Thieulot, C. (Cedric) wrote:
> Hi Wolfgang,
> 
> sorry for the late reply, I somehow missed your second email.
> 
> 
> Do I interpret your pictures correctly that
> 
> - there is/should be an exact left-right symmetry in the velocity field
> 
> yes. the initial temp field is given by (1-z)-0.01cos(pi x) sin(pi x)  in a [0,1]x[0,1] box
> 
> - the boundary layer exists on only one side?
> 
> indeed, always on the right.
> 
> I hereby attach three snapshots at three levels of refinements (5,6,7). It becomes more and more visible with a higher resolution.
> 
> Best,
> 
> C.
> 
> [cid:E9CB0E90-9C6D-4F79-ACB6-4F4E24D226C6 at geo.uu.nl][cid:83AB99DD-0EE5-4498-A172-0B00C55E2FF4 at geo.uu.nl][cid:FFC9D13E-F7C6-434B-9BE0-4D6A427B5393 at geo.uu.nl]
> 
> 
> 
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