Hermes Tutorial

Thank you for your interest in Hermes!

This document contains a beginner’s tutorial. It will walk you in small steps through the solution of linear, nonlinear, and time-dependent problems from various engineering and scientific areas, using higher-order elements and adaptivity algorithms, and solving multiphysics coupled problems.

The document is under continuous development. If you find bugs, typos, dead links and such, please report them to the Hermes2D mailing list.

Installation

• installation is very simple and has the following steps:

1) clone the repository

2) on Windows (and on other platforms as well if necessary), copy CMake.vars.example to CMake.vars and adjust it.

3) HERMES_DIRECTORY and HERMES_INCLUDE_PATH should point to lib and include directories where you installed HERMES.

typically, these will be “lib” and “include” subdirectories of the directory specified by TARGET_ROOT in your library repository.

4) the DEP_ROOT variable should in most cases point to the same variable in CMake.vars in your library repository.

5) the same for the PTHREAD_ROOT variable

6!!) important step is to set WITH_TRILINOS to the same value as you set it in your library repository. Otherwise, linking issues will occur.

Solving 2D Problems

• Tutorial Part A (Linear Problems)
• Tutorial Part B (Nonlinear Problems)
• Tutorial Part C (Transient Problems)
• Tutorial Part D (Automatic Adaptivity)
• Tutorial Part E (FVM and DG)
• Tutorial Part F (Using Trilinos)
• Tutorial Part G (Miscellaneous Techniques)

Solving 1D Problems

Selected 1D problems are part of the repository “hermes-examples”. To clone it, type:

git clone git://github.com/hpfem/hermes-examples.git

Solving Eigenproblems

Eigenproblems are supported in the legacy code but not in the OpenMP version, because of their Python dependency (PySparse). Implementation of a C++ eigensolver class is scheduled for near future.