scholarly journals Finite element approximation analysis for a steady state two-phase transport model of proton exchange membrane fuel cell

2014 ◽  
Vol 270 ◽  
pp. 198-210 ◽  
Author(s):  
Yuzhou Sun ◽  
Pengtao Sun
Keyword(s):  
Steady State ◽  
Proton Exchange Membrane ◽  
Transport Model ◽  
Finite Element Approximation ◽  
Proton Exchange ◽  
Element Approximation ◽  
Two Phase ◽  
Approximation Analysis ◽  
Exchange Membrane ◽  
Phase Transport

scholarly journals Modeling of two-phase transport in proton exchange membrane electrolyzer cells for hydrogen energy

2017 ◽  
Vol 42 (7) ◽  
pp. 4478-4489 ◽  
Author(s):  
Bo Han ◽  
Jingke Mo ◽  
Zhenye Kang ◽  
Gaoqiang Yang ◽  
William Barnhill ◽  
...  
Keyword(s):  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Hydrogen Energy ◽  
Two Phase ◽  
Exchange Membrane ◽  
Phase Transport

An Effective Combined Finite Element-Upwind Finite Volume Method for a Transient Multiphysics Two-Phase Transport Model of a Proton Exchange Membrane Fuel Cell

2013 ◽  
Vol 10 (3) ◽  
Author(s):  
Pengtao Sun ◽  
Su Zhou ◽  
Qiya Hu
Keyword(s):  
Finite Element ◽  
Fuel Cell ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Proton Exchange Membrane ◽  
Transport Model ◽  
Proton Exchange ◽  
Two Phase ◽  
Volume Method ◽  
Exchange Membrane

In this paper, an effective combined finite element-upwind finite volume method is studied for a three-dimensional transient multiphysics transport model of a proton exchange membrane fuel cell (PEMFC), in which Navier–Stokes–Darcy coupling flow, species transports, heat transfer, electrochemical processes, and charge transports are fully considered. Multiphase mixture (M2) formulation is employed to define the involved two-phase model. Kirchhoff transformation is introduced to overcome the discontinuous and degenerate water diffusivity that is induced by the M2 model. By means of an adaptive time-stepping fourth-order multistep backward differencing formula (BDF), we design an effective temporal integration scheme to deal with the stiff phenomena arising from different time scales. In addition, all the governing equations are discretized by a combined finite element-upwind finite volume method to conquer the dominant convection effect in gas channels, while the diffusion and reaction effects are still dealt with by finite element method. Numerical simulations demonstrate that the presented techniques are effective to obtain a fast and convergent nonlinear iteration within a maximum 36 steps at each time step; in contrast to the oscillatory and nonconvergent iteration conducted by commercial CFD solvers and standard finite element/finite volume methods.

Mesoscopic Models of Two-Phase Transport in PEMFCs: A Review

2011 ◽  
Vol 66-68 ◽  
pp. 1708-1713
Author(s):  
Wei Wu ◽  
Fang Ming Jiang ◽  
Zhi Qiang Dong
Keyword(s):  
Proton Exchange Membrane ◽  
Homogeneous Medium ◽  
Proton Exchange ◽  
Transport Models ◽  
Two Phase ◽  
Structural Morphology ◽  
Macroscopic Models ◽  
Mesoscopic Models ◽  
Exchange Membrane ◽  
Phase Transport

Water management is one of the most critical and widely studied topics in what concerns proton exchange membrane fuel cell (PEMFC). Traditional macroscopic models of two-phase transport in PEMFCs generally assume “homogeneous” medium and are based on the concept of volumetric averaging, thus lumping all the detailed information of the structural morphology inside a PEMFC. Mesoscopic models have the potential to reveal the underlying pore-scale mechanism of two-phase transport in PEMFCs. This paper aims to review the sate-of-the-art and perspective of the PEMFC mesoscopic two-phase transport models, mainly the pore network (PN) model and the Lattice Boltzmann (LB) model. We will talk about what we are planning to do using the LB model as well.

scholarly journals Heat and Mass Transfer and Two Phase Flow in Hydrogen Proton Exchange Membrane Fuel Cells and Direct Methanol Fuel Cells

2003 ◽  
Author(s):  
Hang Guo ◽  
Chong Fang Ma ◽  
Mao Hai Wang ◽  
Jian Yu ◽  
Xuan Liu ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Direct Methanol Fuel Cells ◽  
Proton Exchange ◽  
Phase Flow ◽  
Two Phase ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Exchange Membrane

Fuel cells are related to a number of scientific and engineering disciplines, which include electrochemistry, catalysis, membrane science and engineering, heat and mass transfer, thermodynamics and so on. Several thermophysical phenomena such as heat transfer, multicomponent transport and two phase flow play significant roles in hydrogen proton exchange membrane fuel cells and direct methanol fuel cells based on solid polymer electrolyte membrane. Some coupled thermophysical issues are bottleneck in process of scale-up of direct methanol fuel cells and hydrogen proton exchange membrane fuel cells. In present paper, experimental results of visualization of condensed water in fuel cell cathode microchannels are presented. The equivalent diameter of the rectangular channel is 0.8mm. Water droplets from the order of 0.08mm to 0.8mm were observed from several different locations in the channels. Several important problems, such as generation and change characteristics of water droplet and gas bubble, two phase flow under chemical reaction conditions, mass transfer enhancement of oxygen in the cathode porous media layer, heat transfer enhancement and high efficiency cooling system of proton exchange membrane fuel cells stack, etc., are discussed.

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