Scientific committee:

Arian
Novruzi, University of Ottawa

John Stockie, SFU

Brian Wetton, UBC

**Format:** 3 days - plenary presentations, contributed talks, poster
session.

Invited speakers:

Ned
Djilali, University of Victoria

*Modelling of Transport Phenomena in Polymer Electrolyte Membranes
*

Polymer electrolytes membranes (PEM) are at the core of low temperature
fuel cells. These membranes prevent crossover of reactant gases and
provide the pathways for ionic transport. The functionality of polymer
electrolyte membranes depends on an array of transport phenomena,
and in particular on the coupling of protonic conductivity and water
transport. We will review some of the underlying physical processes
and various modelling strategies, present some recent theoretical
developments, and illustrate their implementation in computational
fuel cell models

Yalchin
Efendiev, Texas A&M University

Multiscale analysis and computation
of multiphase flows in heterogeneous porous media

In this talk, I will describe multiscale analysis and computation
for porous media flows. I will talk about the classical upscaling
approaches for multiphase flows and current multiscale computational
techniques. In particular, multiscale finite element methods and their
applications to porous media flows in heterogeneous media will be
presented. Multiscale analysis of multiphase flows will be described
and used in the analysis of numerical.

**Peter Minev**,
University of Alberta

*Multiphase computational fluid dynamics*

(i) introduction of the available models for multiphase flows and

(ii) discussion of the various methods and algorithms for their discretization.

The models will include: direct simulation based on the Navier-Stokes
equations for multifluid and fluid-solid mixtures, models based on
averaged equations, models for porous media flows.

Keith
Promislow, Michigan State University

*Phase change and Hysteresis in Proton Exchange Membrane Fuel Cells*

A fundamental difficulty in upscaling micron-level transport parameters
describing the components of polymer exchange membrane fuel cells
(PEMFC) to device-level performance is the presence of fronts induced
by various types of phase change. Fronts are not only a driving force
behind hysteresis and slow transient behavior at the device level,
but also greatly complicate numerical resolution of governing models.
The wide range of time-scales present in PEMFC make direct simulation
of comprehensive transient models impossible. A situation where analysis
pays a handsome dividend arises when time scales are widely separated.
We consider two examples of phase transitions in which an analytical
reduction of the problem can simplify the underlying model by orders
of magnitude.

**Workshop description**

Hydrogen fuel cells (HFC) are on the focus of research of several scientific
areas, such as chemistry, material sciences, engineering, mathematics
etc. The interest for operating efficiently HFC is constantly increasing
as HFC produce free pollution electrical power. While the modeling and
physical understanding of fuel cell dynamics at microscopic and macroscopic
level is marking constant progress, the mathematical and numerical analysis
of these processes is just beginning.

This workshop will be focused on numerical, computational and mathematical
analysis of HFC dynamics. Modeling will be an important face of the
workshop. HFC dynamics are given by mass and heat transfer laws with
phase change, which means by a set of nonlinear system of partial differential
equations (PDE). The different physical parameters (length, timescales)
vary over a large range values which makes the PDE system very stiff.
Understanding HFC dynamics taking place in very small scale (mirco,
and even nanoscale) makes numerical and mathematical analysis a powerful
tool of investigation.

This workshop aims also to gather the researchers working on different
problems ralated to HFC dynamics, to enhance the collaboration and exchange
between academia professors and researchers from industry and to encourage
and motivate the participation of students into mathematical fuel cell
research.

Registration Fee

The registration fee is $100 CAN for all academic and industrial researchers,
$50 CAN dollars for students. The invited speakers are free of registration
fees.

On site after May 3/06

**Travel Support**

Please note that travel and accomodation support will be available for
students. Interested students must contact Arian
Novruzi at novruzi@uottawa.ca
before April 1st, 2006.

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