Mercurial > fem-fenics-eugenio
changeset 28:82660c13123c
Definition of the variational problem
* Laplace.ufl: this file is needed by fem_fs.cc
It should be created from the user and fem_fs.cc should
be created only later, but for the moment we use this
simple solution.
| author | gedeone-octave <marco.vassallo@outlook.com> |
|---|---|
| date | Mon, 15 Jul 2013 16:58:52 +0200 |
| parents | cb21a4ac2314 |
| children | 798ff8c0041d |
| files | src/Laplace.ufl |
| diffstat | 1 files changed, 36 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/Laplace.ufl Mon Jul 15 16:58:52 2013 +0200 @@ -0,0 +1,36 @@ +# Copyright (C) 2005-2009 Anders Logg +# +# This file is part of DOLFIN. +# +# DOLFIN is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# DOLFIN is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with DOLFIN. If not, see <http://www.gnu.org/licenses/>. +# +# First added: 2005 +# Last changed: 2011-03-08 +# +# The bilinear form a(u, v) and linear form L(v) for +# Poisson's equation. +# +# Compile this form with FFC: ffc -l dolfin Poisson.ufl. + + +element = FiniteElement("Lagrange", triangle, 2) +# element = FiniteElement("Lagrange", tetrahedron, 2) + +u = TrialFunction(element) +v = TestFunction(element) +f = Coefficient(element) +g = Coefficient(element) + +a = inner(grad(u), grad(v))*dx +L = f*v*dx + g*v*ds