TY - GEN
T1 - An improved two-phase flow and transport model for the PEM fuel cell
AU - Chen, Shizhong
AU - Wu, Yuhou
AU - Sun, Hong
AU - Liu, Hongtan
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - A two-phase flow, multi-component model has been optimized for a PEM (Proton Exchange Membrane) Fuel Cell. The modeling domain consists of the membrane, two catalyst layers, two diffusion layers, and two channels. Both liquid and gas phases are considered in the entire cathode and anode, including the channel, the diffusion layer and the catalyst layer. The Gravity effect on liquid water was considered in channels. Typical two-phase flow distributions in the cathode gas channel, gas diffuser and catalyst layer are presented. Source term and porosity term were optimized. Based on the simulation results, it is found that two-phase flow characteristics in the cathode depend on the current density, operating temperature, and cathode and anode humidification temperatures. Water mass fraction for the fuel cell with anode upward is higher than that the case with cathode-upward. Liquid water with the case of cathode-upward blocks pores in the gas diffuser layer leading to increasing the concentration polarization. Gravity of liquid water exerts the effect on the water mass fraction in the cathode.
AB - A two-phase flow, multi-component model has been optimized for a PEM (Proton Exchange Membrane) Fuel Cell. The modeling domain consists of the membrane, two catalyst layers, two diffusion layers, and two channels. Both liquid and gas phases are considered in the entire cathode and anode, including the channel, the diffusion layer and the catalyst layer. The Gravity effect on liquid water was considered in channels. Typical two-phase flow distributions in the cathode gas channel, gas diffuser and catalyst layer are presented. Source term and porosity term were optimized. Based on the simulation results, it is found that two-phase flow characteristics in the cathode depend on the current density, operating temperature, and cathode and anode humidification temperatures. Water mass fraction for the fuel cell with anode upward is higher than that the case with cathode-upward. Liquid water with the case of cathode-upward blocks pores in the gas diffuser layer leading to increasing the concentration polarization. Gravity of liquid water exerts the effect on the water mass fraction in the cathode.
KW - Fuel cell
KW - PEM
KW - Two-phase flow
KW - Water management
UR - http://www.scopus.com/inward/record.url?scp=77954181333&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954181333&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.105-106.691
DO - 10.4028/www.scientific.net/AMR.105-106.691
M3 - Conference contribution
AN - SCOPUS:77954181333
SN - 0878492755
SN - 9780878492756
T3 - Advanced Materials Research
SP - 691
EP - 694
BT - Chinese Ceramics Communications
T2 - 6th China International Conference on High-Performance Ceramics, CICC-6
Y2 - 16 August 2009 through 19 August 2009
ER -