[CIG-LONG] stressbc and hydrostatic term

Walter Landry walter at geodynamics.org
Wed Oct 20 10:23:47 PDT 2010

Laetitia Le Pourhiet <laetitia.le_pourhiet at upmc.fr> wrote:
> Hi Walter me again ,
> I want to put a normal stress as bc at depth (let say I have a static
> bottom and I want the sigma_yy = initial rho*g*z) so that particules
> inflow or outflow of the model at the bottom to simulate an horizontal
> depth of compensation.
> I am using your hydrostatic correction to limit the compaction of the
> element so what is the value of stress I have to put at depth?
> initial rho*g*z or 0 ?  in other words, where is the stressbc applied?
> before or after the hydrostatic correction has been removed from the
> RHS?

If the bottom is flat, then the correction is zero.  So you do not
have to do anything for the bottom.  If the bottom boundary moves then
you have to apply a correction, which is only available in the svn

Walter Landry
walter at geodynamics.org

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