https://github.com/cembooks/static

Supplemented computer code for the book "Electromagnetics with finite elements: static problems" ISBN 978-9090380933
https://github.com/cembooks/static

c-plus-plus dealii electromagnetics finite-elements

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Supplemented computer code for the book "Electromagnetics with finite elements: static problems" ISBN 978-9090380933

• Host: GitHub
• URL: https://github.com/cembooks/static
• Owner: cembooks
• Created: 2024-07-19T22:37:13.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-12-02T22:43:09.000Z (about 1 year ago)
• Last Synced: 2025-02-10T21:19:27.576Z (about 1 year ago)
• Topics: c-plus-plus, dealii, electromagnetics, finite-elements
• Language: C++
• Homepage: https://cembooks.nl
• Size: 1.03 MB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
Supplemented computer code


 Introduction 


This is the supplemental computer code for the book "Electromagnetics with

finite elements: static problems", ISBN 978-9090380933. The code contains

numerical experiments that illustrate application of the finite element

method to problems in electro- and magnetostatics. A number of boundary

value problems formulated in terms of electric scalar potential, total

magnetic scalar potential, reduced magnetic scalar potential, magnetic vector

potential, and current vector potential are solved numerically on two- and

three-dimensional problem domains.

The documentation of the computer code and the numerical experiments

exists in a form of online Logbook. The Logbook can be found at 

https://cembooks.nl.

 Installation 


To run the code do the following.

1) Get [deal.II](https://dealii.org) version 9.7.0 or newer and install it. The

   best is to build the latest version of deal.II from the source by following

	 the installation instructions available at [www.dealii.org](https://dealii.org).

   No optional interfaces to other software packages are needed. The default 

   configuration will do.

   Set an environment variable by adding the following line to /etc/profile: 

	 export DEAL_II_DIR=/path/to/dealii 

   where /path/to/dealii is the directory in which the deal.II is installed. Reboot.

   Check if the variable exists by typing the following into CLI:

   printenv | grep DEAL

   Check if the version of deal.II in the CMakeLists.txt files is correct. To do so,

   change into static/ directory and type the following:

   find . -name "CMakeLists.txt" -exec grep "find_package(deal.II" {} +

   If the version is not correct, change it. For example, to change the version 

   from 9.3.2 to 9.7.0 type the following into CLI:

   find . -name "CMakeLists.txt" -exec sed -i 's/deal.II 9.3.2/deal.II 9.7.0/g' {} +

2) Install gmsh, gnuplot, texlive, and GNU parallel. This can be done as the 

   following:

   sudo apt-get install gmsh gnuplot texlive parallel

3) Install a program for viewing vtk files. [VisIt](https://visit.llnl.gov) 

   software package of the Lawrence Livermore National Laboratory is a good

   option. However, VisIt cannot open files that contain the higher-order cells.

   Many numerical experiments use the second-order mapping. To be able to view

   the vtu files [Paraview](https://www.paraview.org) version 5.5.0 or higher

   is needed. Paraview can open vtk files as well. So, strictly speaking

   Paraview is enough. I recommend to install both, Paraview and VisIt. 

4) Extract the archive of the supplemental computer to static/ directory.

5) Change into the static/ directory and run

   ./clean  

   ./setup  

   ./build  

   ./run-all  

   This will build and execute all numerical experiments. The last two steps will

   take some time... Alternatively, you can build and run only the experiments you

   are interested in. To do so, change into static/ and run

   ./clean  

   ./setup  

   Then change into the directory of the experiment you are interested in, say

   mms/. In this directory change into build/Release/ and run

   ./clean  

   ./build  

   After that change into mms/bin/Release/ and run

   ./run-all  

   This will execute the mms experiment. The results of the simulations are in

   mms/bin/Release/Data/ directory.

   Note that running the ./clean script is a must. You need to run it even if

   you operate on a clean copy of the code. The git removes empty directories.

   But the empty directories are needed for running the code. The ./clean script

   restores all missing (empty) directories.