[CIG-LONG] Hydrostatic Term

[Walter Landry]

erik.a.kneller at exxonmobil.com wrote:
> 
> Hello Gale Developers,
> 
> With the latest version of Gale (1.4.1) it appears from the manual that the
> heat equation and Stokes equations are not automatically coupled for
> general dynamic problems since the hydrostatic term, which is a function of
> temperature, must be manually prescribed. Is this a permanent feature of
> Gale?

The Stokes equations and heat equation are still coupled.  The
hydrostatic term just subtracts out a static component.  Regardless of
the parameters you choose for the hydrostatic term, you will get the
same simulation (up to numerical issues).  However, it is those purely
numerical issues that make it necessary to have a decent choice for
the hydrostatic term.

Cheers,
Walter Landry
walter at geodynamics.org