[CIG-LONG] TimeStep

[Walter Landry]

Brian Wilson <bjwilson83 at gmail.com> wrote:
> Hi Walter,
> 
> I've been having trouble getting dt to change the time step correctly. I set
> dt to 1 but I get the following time steps:
> 
> TimeStep = 0, Time = 0
> TimeStep = 1, Time = .739729

Setting "dt" only sets the timescale for the mechanical Stokes flow.
Gale also computes a timestep from the diffusion and advection terms
of the Energy equation.  If those timesteps are smaller than what you
set for the mechanical Stokes flow, then Gale uses those.

Ideally, Gale should use "dt" for both the Energy and Stokes flow
equations, but at present it does not.

Cheers,
Walter Landry
walter at geodynamics.org