Re: [Libmesh-users] LibMesh applications to phase ordering problems

2008-04-28 Thread John Peterson
On Mon, Apr 28, 2008 at 9:02 AM, Nasser Mohieddin Abukhdeir <[EMAIL PROTECTED]> wrote: > Hi: > Thanks, I ended up figuring that out over the weekend, my background > in C is not serving me very well with C++! > So far I have run into two major difficulties which I think require > me to ma

Re: [Libmesh-users] LibMesh applications to phase ordering problems

2008-04-28 Thread Nasser Mohieddin Abukhdeir
Hi: Thanks, I ended up figuring that out over the weekend, my background in C is not serving me very well with C++! So far I have run into two major difficulties which I think require me to make some code additions. Note, I am posting this to the dlist in case I am using LibMesh incorre

Re: [Libmesh-users] LibMesh applications to phase ordering problems

2008-04-27 Thread John Peterson
Hi, Since your initialization function is a member function of a class you can't pass a pointer to it for project_solution the same way you would for a "global" function. An easy fix is to use a global function instead, but I believe there may be another, more correct way to achieve what you are

Re: [Libmesh-users] LibMesh applications to phase ordering problems

2008-04-23 Thread Nasser Mohieddin Abukhdeir
Thanks for the informative answer, I moved over the DiffSystem and I think I worked out some incorrect math, but now I am back to square one with the initial condition of the transient problem. I added this line to the end of my Nem2DSystem:init_data () call (Nem2DSystem is the name of my clas

Re: [Libmesh-users] LibMesh applications to phase ordering problems

2008-04-22 Thread Roy Stogner
On Wed, 23 Apr 2008, Nasser Mohieddin Abukhdeir wrote: > *** Solving time step 0, time = 1e-07 *** > ERROR: LASPACK Error: > in ILUFactor for Mat: > Factorization produces zero pivot elements. > [0] src/numerics/laspack_linear_solver.C, line 276, compiled Apr 21 2008 > at 14:01:19 > Aborted > >

[Libmesh-users] LibMesh applications to phase ordering problems

2008-04-22 Thread Nasser Mohieddin Abukhdeir
Hello: So I'm a bit of a newbie, but I am trying to adapt example 13 to isotropic/nematic liquid crystal phase transition model that I have been using Comsol to solve for a while now. I think I've made some decent progress, but I have a bit of a problem when I run the code I get: *** Solvi