philippericka / book.feelpp.org

:globe_with_meridians: The Feel++ Book

Feel++: Finite Element Embedded Library in C++

Table of Contents

• What is Feel++ ?
• Read the Feel++ Book
• Help and Support
• Contribute to this documentation
• Compiling the book
  • Using Docker

What is Feel++ ?

Feel++ is a unified C++ implementation of Galerkin methods (finite and spectral element methods) in 1D, 2D and 3D to solve partial differential equations.

Feel++ is

1. a versatile mathematical kernel solving easily problems using different techniques thus allowing testing and comparing methods, e.g. cG versus dG.

2. a small and manageable library which nevertheless encompasses a wide range of numerical methods and techniques and in particular reduced order methods such as the reduced basis method.

3. a software that follows closely the mathematical abstractions associated with partial differential equations (PDE) and in particular the finite element mathematical framework and variational formulations.

4. a library that offers solving strategies that scales up to thousands and even tens of thousands of cores.

5. a library entirely in C++ allowing to create C++ complex and typically non-linear multi-physics applications currently in industry, physics and health-care.

Read the Feel++ Book

All the Feel++ manuals are available at http://book.feelpp.org.

Help and Support

We’re always happy to help out with Feel++ or any other questions you might have. You can ask a question or signal an issue at the Gitter Feel++ salon.

Contribute to this documentation

You can contribute to improve this documentation on GitHub and follow the Gitter Feel++ Book forum.

See also .how to write the book.

Compiling the book

Using Docker

The Feel++ book toolchain is installed in the feelpp/feelpp-env docker image

docker run --rm -it feelpp/feelpp-env

Installing the toolchain

1. install ruby and bundle

# On MacOSX
brew install ruby
gem install rake bundle

# on debian/ubuntu
apt-get install ruby-bundler

1. Install the gems into the project

$ bundle config --local github.https true
$ bundle --path=.bundle/gems --binstubs=.bundle/.bin

📎	it installs all the requirements

then type

bundle exec jekyll serve

📎	it starts a local web server on the port 4000 where you can read the book.