neumann
FENICS with homogenous Neumann boundary conditions

neumann, a FENICS script which uses the finite element method to solve a two dimensional boundary value problem in which homogeneous Neumann boundary conditions are imposed, based on a program by Doug Arnold.

Note that I have installed FENICS using Docker, and so to run this script I issue the commands:

1. cd $HOME/fenicsproject/neumann
2. fenicsproject run
3. python3 neumann.py
4. exit

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Reference:

1. Doug Arnold,
   Introduction to Fenics

Source Code:

• neumann.py a script which sets up and solves the problem.
• neumann.txt the output file.
• neumann_mesh.png a plot of the mesh.
• neumann_solution.png a color contour plot of the solution.
• neumann_contour.png a contour plot of the solution.