Demos

Introductory demos

These demos illustrate DOLFINx/FEniCSx usage and are a good way to begin learning FEniCS. We recommend that you go through these examples in the given order.

1. Getting started: Poisson equation.

2. Using mixed, Taylor-Hood element: Stokes equation

Advanced demos

These examples demonstrate how to solve a certain PDE using more advanced techniques. We recommend that you take a look at these demos for tips and tricks on how to use more advanced or lower-level functionality and optimizations.

1. Defining variants of elements using Basix: Variants of Lagrange elements.

2. Creating TNT elements using Basix’s custom element interface.

All demos

• Poisson equation
• Cahn-Hilliard equation
• Stokes equations with Taylor-Hood elements
• Elasticity
• Mesh generation with Gmsh
• Helmholtz equation
• Static condensation of linear elasticity
• Visualization with pyvista
• Interpolation and IO
• Solving PDEs with different scalar (float) types
• Variants of Lagrange elements
• Creating TNT elements using Basix’s custom element interface
• Scattering from a wire with scattering boundary conditions
• Scattering from a wire with perfectly matched layer condition
• Mode analysis for a half-loaded rectangular waveguide