**Demo Codes**

Here is a collection of demo programs with increasing complexity to illustrate the main functionalities of the library OFELI.

A 1-D heat equation

A 1-D linear transport equation

The 2-D Laplace equation with P

The 3-D Laplace equation with P

The 2-D Steklov-Poincaré problem using P

A 2-D transient heat transfer code

A 3-D steady state heat transfer code

A 3-D linear elasticity code

A linear elasticity code with planar deformations and contact

An elastic beam code

A planar truss code

A 2-D incompressible fluid flow problem using triangular finite elements and a projection method

Solve a linear system issued from a PDE by a preconditioned iterative method

A first-order nonlinear ode given numerically

A system of first-order linear ode's given numerically

A simple nonlinear ode given by regular expressions

Solution of a problem of elastodynamics by the Newmark method

Solve an eigenvalue problem for the Laplace equation