The FEMhub project
Our mission: To create an open-source distribution featuring many finite element codes, along with a web notebook and a unified Python interface. We want FEMhub to become an alternative to commercial FEM codes.
Installation
Download, unpack, build:
$ wget http://sage.math.washington.edu/home/ondrej/femhub/femhub-0.9.7.tar $ tar xf femhub-0.9.7.tar $ cd femhub-0.9.7 $ make
Depending on the speed of your computer, wait between 14 minutes to 1.5 hour. That's it. It should work on any Linux, Mac and Windows (in Cygwin), if it fails, please report a bug. If you want, you can also download a binary from here, however, if it doesn't work for you, compile from source, that should always work.
You can take advantage of several cores on your computer by executing
export MAKE="make -j9" before typing make to compile
in parallel on 9 cores.
First Steps
$ ./femhub ---------------------------------------------------------------------- | FEMhub Version 0.9.7, Release Date: 2009-09-23 | | Type notebook() for the GUI. | ---------------------------------------------------------------------- In [1]: notebook()
and a browser will start with the web notebook. Create a new worksheet and type the following into the cell:
import hermes2d hermes2d.demo_layer()
Press Shift+Enter (or click the "evaluate" button) and you should see a calculation:
iter=00, err_est=99.05%, DOFS=1 iter=01, err_est=86.54%, DOFS=3 iter=02, err_est=82.76%, DOFS=7 iter=03, err_est=76.92%, DOFS=21 iter=04, err_est=61.67%, DOFS=39 iter=05, err_est=43.00%, DOFS=74 iter=06, err_est=27.93%, DOFS=113 iter=07, err_est=20.37%, DOFS=156 iter=08, err_est=14.32%, DOFS=218 iter=09, err_est=11.06%, DOFS=298 iter=10, err_est= 8.01%, DOFS=412 iter=11, err_est= 5.68%, DOFS=555 iter=12, err_est= 3.86%, DOFS=714 iter=13, err_est= 2.53%, DOFS=861 iter=14, err_est= 1.66%, DOFS=1056 iter=15, err_est= 1.06%, DOFS=1223 iter=16, err_est= 0.68%, DOFS=1565
and then the solution:
and a convergence graph:
See here here for more instructions and demos.