Adaptivity for General 2nd-Order Linear Equation (03-general-adapt)

Git reference: Tutorial example 03-general-adapt.

Model problem

This example does not bring anything substantially new and its purpose is solely to save you work adding adaptivity to the tutorial example P01-linear/07-general. Feel free to adjust this example for your own applications.

Sample results

Solution:

Final hp-mesh:

Convergence graphs of adaptive h-FEM with linear elements, h-FEM with quadratic elements and hp-FEM.

Convergence comparison in terms of CPU time.