Two–phase flow and transport
Fuel Cell Technology and Applications
Polymer electrolyte membrane fuel cells and systems (PEMFC)
Bipolar plate materials and flow field design
Published Online: 15 DEC 2010
Copyright © John Wiley & Sons, Ltd. All rights reserved.
Handbook of Fuel Cells
How to Cite
Wang, C.-Y. 2010. Two–phase flow and transport. Handbook of Fuel Cells. .
- Published Online: 15 DEC 2010
This chapter reviews latest experimental and modeling efforts towards developing a basic understanding of two-phase flow physics in proton exchange membrane fuel cells. Both hydrogen proton exchange membrane fuel cells and proton exchange membrane based direct methanol fuel cells are discussed. As an important example of materials characterization, wetting characteristics of gas diffusion layers are examined and the techniques of measuring contact angle are discussed. Next, a comprehensive physico-chemical modeling framework of combining electrochemistry with two-phase transport is presented along with select numerical examples for both hydrogen and direct methanol fuel cells. The current state of the computational efficiency of these comprehensive models is indicated. A critical need for model validation against detailed data of the current distribution is demonstrated, and a new technique of measuring the current distribution using a segmented flow plate and a multi-channel potentiostat is presented. Finally, areas for future research into two-phase transport in proton exchange membrane fuel cells and the associated cathode flooding are pointed out.
- two-phase flow;
- electrode flooding;
- gas diffusion layer;
- wetting properties;
- current distribution measurement;
- computational fuel cell dynamics;
- direct methanol fuel cells