Numerical simulation of Direct Methanol Fuel Cells
Collaborator: J. Fuhrmann,
Cooperation with: J. Bloch (Freie Universität Berlin (FU-FZT 86))
Supported by: DFG-Forschungszentrum ``Mathematik für
Schlüsseltechnologien'' (Research Center ``Mathematics for Key
The project has been continued with the following focuses:
work is closely related to the
project. The aim is to be able to handle efficiently calculations
in the two- and three-dimensional cases.
Three-dimensional simulation results for an elementary cell in the
case of crossing diffusion channels.
Top: methanol concentration (mol/l), bottom: water pressure (bar)
and proton potential (V)
In close cooperation with project C1 of the DFG Research Center we
started the development of tools for path-following and bifurcation
detection for systems of partial differential equations. Once
available, this tool shall help to understand under which conditions a
fuel cell can have several steady states.
Development of tools for bifurcation analysis
Currently, we are able to handle sufficiently well model problems like
the Brusselator equations.
Bifurcation diagram of a 1D Brusselator system in dependency
of the reactor length
We have been able to present our results at the
Computational Fuel Cell Dynamics II
workshop in Banff, Canada, and--jointly with the Micro fuel cell
group of Fraunhofer IZM Berlin--at the H2 Expo 2003 fair in Hamburg.
- J. DIVISEK, J.FUHRMANN, K. GÄRTNER, R. JUNG, Performance
modeling of a Direct Methanol Fuel Cell, J. Electrochem.
Soc., 150 (2003), pp. A811-A825.
LaTeX typesetting by I. Bremer