poisson2d.form

来自「利用C」· FORM 代码 · 共 18 行

# Copyright (C) 2005-2006 Anders Logg.
# Licensed under the GNU LGPL Version 2.1.
#
# The bilinear form a(v, U) and linear form L(v) for
# Poisson's equation.
#
# Compile this form with FFC: ffc -l dolfin Poisson.form.

element = FiniteElement("Lagrange", "triangle", 1)

v = TestFunction(element)
U = TrialFunction(element)
f = Function(element)

a = dot(grad(v), grad(U))*dx
L = v*f*dx