Questions - Valparaíso - Chile

[Christophe Geuzaine]

Alejandro Angulo wrote:
> 
> Christophe:
> 
> Sorry, but I haven't still been able to obtain good
> result when I apply non homogeneous Neumman  boundary
> conditions in thermal problems (convection). I send
> you quite simple problem (a rectangular conductor with
> certain losses for unit of volume - constant - and
> certain value of convection conefficient in the
> boundary) so that you revise it and you indicate me,
> please, wich is the problem that I have.
> 

There is a small mistake in the formulation: in the "Equation" field,
each line represents one _term_ in the equation (maybe we should state
this more explicitely in the doc). So, you can write [{T} + Sqrt[{T}] +
k , {T} ] (everything goes in the constant part of the equation, i.e. in
the right hand side), but not [Dof{T} + Sqrt[{T}] + k , {T} ]. The
convection should therefore be written as

Galerkin { [ Hc[] * Dof{T} , {T} ] ; 
Galerkin { [ -Hc[] * Ta , {T} ] ; 

Hope this helps,

-- 
Christophe Geuzaine

Tel: +32-(0)4-366.37.10    mailto:Christophe.Geuzaine at ulg.ac.be
Fax: +32-(0)4-366.29.10    http://www.geuz.org