سال انتشار: ۱۳۸۶

محل انتشار: پنجمین کنگره بین المللی مهندسی شیمی

تعداد صفحات: ۶

نویسنده(ها):

Jamekhorshid – Dept. of Chem. Eng., Shiraz University, Shiraz, Iran
Jafarpour – Dept. of Chem. Eng., Shiraz University, Shiraz, Iran
Karimi – Dept. of Chem. Eng., Shiraz University, Shiraz, Iran
Li – Dept. of Chem. Eng., Shiraz University, Shiraz, Iran, Dept. of Mech. Eng., University of Waterloo, Waterloo, Ontario, Canada

چکیده:

Water management is critically important for polymer electrolyte membrane (PEM) fuel cells, and is complicated by electroosmotic flow of water from anode to cathode through the polymer electrolyte membrane. In this work, the characteristics of electroosmotic flow in a Nafion® membrane with non-uniform zeta potential were investigated. The Poisson-Boltzmann and Navier-Stokes equations were used to model electrical double layer and the flow fields, respectively. The numerical results show the distorted electroosmotic velocity profiles resulting from the axial variation of the zeta potential.