Simulation of nano fibers and filtration processes

L. Cheng, S. Rief and A. Wiegmann
Fraunhofer-Institut für Techno- und Wirtschaftsmathematik, Kaiserslautern, Germany


Nano filtration media have become increasingly interesting for
filtration applications. The benefit of using nano fibers is the
improvement with respect to filter efficiency and the relatively low
pressure drop due to the nano slip.  At the Fraunhofer ITWM, the
simulation of filter media and filtration processes is traditionally
performed resolving the smallest scale of the media. When entering the
nano regime, two problems arise: The structures under consideration
become huge. Hence, special algorithmic approaches have to be followed
to overcome this hurdle. Moreover, the models for fluid flow and
particle movement have to be extended by new physical effects like
slip flow.  The presentation gives an overview on the latest
developments concerning nano filtration in the Fraunhofer software
suite GeoDict / FilterDict.

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Last modified: Sun Mar 14 11:13:47 W. Europe Standard Time 2010