SCIENTIFIC PROGRAMS AND ACTIVITIES

December 22, 2014

May 10-12, 2006

Workshop on Numerical, Mathematical and Modeling Analysis related to Fluid Dynamics in Hydrogen Fuel Cells
University of Ottawa

Supported by University of Ottawa, Fields Institute and MITACS

Organizer:
Arian Novruzi, Department of Mathematics and Statistics,University of Ottawa

University of Ottawa

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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