Originally Posted by gschaider

OpenFOAM has this cool feature named functionObjects of which the only incarnation I've seen so far is the probesFunctionObject. functionObject enables the user to "add" code to the solver at runtime (without recompiling it) that is executed at every time-step.

I have published a collection of such function objects on
http://openfoamwiki.net/index.php/Co...unctionObjects
that do simple evaluations that are sometimes useful like averages, integrals, forces, mass-flows on patches and/or volumes.

The actual library can be downloaded via subversion:
svn checkout https://openfoam-extend.svn.sourceforge.net/svnroot/openfoam-extend/trunk/Breede r/libraries/simpleFunctionObjects/

If anyone has
* ideas for extensions (a liftDrag-FunctionObject comes to mind)
* bugfixes/stylistic suggestions (and there are bound to be some)
she/he is welcome to contribute these via the technical wonder that is called subversion (you'll just need write access to the svn)

Bernhard