Numerical simulation of three-dimensional gas/liquid two-phase flow in a proton exchange membrane fuel cell |
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Authors: | Zhuge Weilin Zhang Yangjun Ming Pingwen Lao Xingsheng and Chen Xiao |
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Affiliation: | (1) Department of Automotive Engineering, Tsinghua University, Beijing, 100084, China;(2) Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China |
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Abstract: | Investigation into the formation and transport of liquid water in proton exchange membrane fuel cells (PEMFCs) is the key
to fuel cell water management. A three-dimensional gas/liquid two-phase flow and heat transfer model is developed based on
the multiphase mixture theory. The reactant gas flow, diffusion, and chemical reaction as well as the liquid water transport
and phase change process are modeled. Numerical simulations on liquid water distribution and its effects on the performance
of a PEMFC are conducted. Results show that liquid water distributes mostly in the cathode, and predicted cell performance
decreases quickly at high current density due to the obstruction of liquid water to oxygen diffusion. The simulation results
agree well with experimental data.
Translated from J Tsinghua Univ (Sci & Tech), 2006, 46(2): 252–256 译自: 清华大学学报] |
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Keywords: | PEMFC water management two-phase flow numerical simulation |
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