Hi Juliana, sorry for the late reply. Because your question concerns GetDP it would be better to write to the GetDP mailing-list ([email protected]). :-)
The equations in the Formulation-part of the GetDP input file are the partial differential equations in weak form. They are derived from the PDEs in strong form (the form which more people are familiar with). Here are some links to interesting pages with this topic: http://en.wikiversity.org/wiki/Nonlinear_finite_elements/Weak_form_of_Poisson_equation http://online.redwoods.cc.ca.us/instruct/darnold/staffdev/assignments/calcvarb.pdf http://en.wikipedia.org/wiki/Calculus_of_variations And here you'll find a very good video lecture from MIT: "Mathematical Methods for Engineers II" Lecture 23 of 29 - Calculus of Variations / Weak Form http://academicearth.org/lectures/calculus-variations-weak-form I hope you find it helpful. Kind regards, Michael Asam -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Juliana Sent: Monday, May 02, 2011 7:41 PM To: [email protected] Subject: [Gmsh] Formulation GetDP Good Afternoon! In an electrostatic problem in the formulation of the exercise was described in the following expression: Equation { Galerkin {[epsr[] * Dof {d v} {d v}]; In Vol; Jacobian Vol; Integration Int;} GlobalTerm {[Dof {Q-} / eps0, {V}]; In Grouped;} } I began studying the GetDP did not understand how to get this [epsr[] * Dof {d v} {d v}] and [-Dof {Q} / eps0, {V}]. How to develop the equations in GetDP? GetDP solve various kinds of applications such as development. Thanks, Juliana. _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
