RE: [Libmesh-users] problem with EquationSystems::solve

[Shaoying Lu <sy...@bi...>]

Thanks for pointing this out. Yes, I did

---------------------
*system.old_local_solution = *system.current_local_solution;
---------------------

And the thing is exactly the same program worked well with version
0.4.3-rc1.

Kathy



On Fri, 18 Mar 2005, KIRK, BENJAMIN (JSC-EG) (NASA) wrote:

> Absolutely.  Are you defining U_old = U at the beginning of each time step
> as in ex9?
>
>
> -----Original Message-----
> From: lib...@li...
> [mailto:lib...@li...] On Behalf Of Shaoying Lu
> Sent: Thursday, March 17, 2005 4:36 PM
> To: lib...@li...
> Subject: [Libmesh-users] problem with EquationSystems::solve
>
>
>
> Hello,
>
> I has been using libmesh for a while for solving nonlinear
> reaction-diffusion equations for a while. It has been working pretty well
> for my application. Recently, I have been trying to switch from
> libmesh-0.4.3-rc1 to libmesh-0.4.3-rc2, in hoping that petsc-2.2.1 will be
> supported. Libmesh and my application were compiled all right, but the
> solution doesn't seem to be updated over time steping. (libmesh-0.4.3-rc1
> worked fine)
>
> Since the reaction-dffiusion equations were defined as an equation system
> containing three ImplicitSystem classes, I suspect it is that the interface
> for calling EquationSystem::solve() was altered in the new release. ( I am
> aware an earlier report by Martine regarding switch from ImplicitSystem to
> LinearImplicitSystem, but that doesn't seem to help in my case.) Would
> anybody to so kind to look into this problem and give me some suggestions as
> what may be going wrong?
>
> Thanks a lot!
>
> Kathy
>
>
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