Even when the initial condition exceed 1 the system is able to converge
to the right solution with no problem.
But with first order approximation the system doesn't work.
Ernesto
Em 2012-12-05 16:51, Roy Stogner escreveu:
> On Wed, 5 Dec 2012, ernestol wrote:
>
>> I will try to set the nodal va
On Wed, 5 Dec 2012, ernestol wrote:
> I will try to set the nodal value directly, thank you.
This *still* won't give you a ringing-free solution. Imagine you're
trying to interpolate a step function which changes from 0 to 1 less
than halfway through a 3-node quadratic line element. You'll set
I am using Lagrange approximation.
I asked about that example just to use as a reference of problem that
use second order and to change to first order.
My model is a Cahn-Hilliard mixed linear formulation. I already have a
code running with first order approximation. (not using libmesh)
Now I
On Dec 5, 2012, at 2:54 PM, ernestol wrote:
> Dear all,
>
> I am just starting using libmesh and trying to implement the
> Cahn-Hilliard equation. I already had implemented that by myself and now
> I am trying to do with libmesh to compare the results and futher use
> adaptative mesh.
>
> Th
Dear all,
I am just starting using libmesh and trying to implement the
Cahn-Hilliard equation. I already had implemented that by myself and now
I am trying to do with libmesh to compare the results and futher use
adaptative mesh.
The problem is that when I use an initial condition like a X wit
