...Mehdi Mortazavi; Anthony D. Santamaria; Mahbod Heidari; Michael P. Doyle; Morgan A. Schrader; Elias R. Rizk Liquid–gas two-phase flow in flow channels of proton exchange membrane (PEM) fuel cells has been investigated extensively in the literature; however, a comparison between the order...

... to the low temperature of the PEMFC. Development of a two-phase flow model is necessary in order to predict water flooding and its effects on the PEMFC performance. In this paper, a multiphase mixture model (M 2 ) is used, accurately, to model two-phase transport in porous media of a PEMFC. The cathode side...

... stresses two-phase flow high temperature fuel cell reformer heat exchanger transient behavior Solid oxide fuel cell (SOFC) systems have been recognized as the most advanced power generation system with the highest thermal efficiency with a compatibility with a wide variety of hydrocarbon...

...Jean-Baptiste Dupont; Dominique Legendre; Anna Maria Morgante This work presents direct numerical simulations of two-phase flows in fuel cell minichannels. Different two-phase flow configurations can be observed in such minichannels, which depend on gas-flow rate, liquid holdup, and wettability...

...Hafez Bahrami; Amir Faghri A two-dimensional, steady state, nonisothermal, nonequilibrium, multifluid, two-phase flow model is employed to investigate fuel delivery characteristics, as well as the strong relation between water transport through the membrane and methanol crossover. A porous layer...

.... It is also shown that the dependence of water transport on the CPSRs can be significantly influenced by the use of a hydrophobic air filter layer at the cathode. capillarity direct methanol fuel cells flow control flow through porous media hydrophilicity hydrophobicity two-phase flow water...

...A. S. Bansode; T. Sundararajan; Sarit K. Das The presence of liquid water at the cathode of proton exchange membrane fuel cell hinders the reactant supply to the electrode and is known as electrode flooding. The flooding at the cathode due to the presence of two-phase flow of water is one...

... , J. S. , and Nguyen , T. V. , 2000 , “ Two-Phase Flow Model of the Cathode of PEM Fuel Cells Using Interdigitated Flow Fields ,” AIChE J. 0001-1541 , 46 , pp. 2053 – 2064 . 10.1002/aic.690461016 West , A. C. , and Fuller , T. F. , 1996 , “ Influence of Rib Spacing...

... the Ohmic resistance of the PEM. 20 04 2009 19 10 2009 16 07 2010 16 07 2010 computational fluid dynamics flow through porous media proton exchange membrane fuel cells two-phase flow polymer electrolyte fuel cell modeling general transport equation Darcy’s law two...

... element analysis finite volume methods iterative methods two-phase flow By applying the combined finite element-upwind finite volume method ( 11 12 13 9 ) to a linearized 3D steady-state, two-phase DMFC model together with Newton’s method, we define the following combined FEM-upwind...

...D. A. Caulk This paper describes an approximate method for analyzing two-phase flow of gas and liquid water in fuel cell channels, whose surfaces are sufficiently hydrophilic for liquid water to wick spontaneously into the channel corners. This analysis is used to address the important question...

...Peng Quan; Ming-Chia Lai As an alternative to traditional reactant flow field design, interdigitated flow field configuration is also of interest to fuel cell design engineers and academic researchers. In this work, the two-phase flow behavior inside the cathode of an interdigitated proton exchange...

... rapidly in the presence of powdered wax. At the highest water flow rate and lowest air velocity used in this study the unwaxed channel gets completely flooded while the slugs of water continued to move forward in the waxed channel. Different two-phase flow regimes have been identified and plotted in both...

... 10.1016/j.jpowsour.2004.12.018 , 144 , pp. 94 – 106 . Hrnjak , P. , 2004 , “ Developing Adiabatic Two Phase Flow in Headers-Distribution Issue in Parallel Flow Micro-Channel Heat Exchangers ,” Heat Transfer Eng. 0145-7632 10.1080/01457630490280128 , 25 ( 3 ), pp. 61 – 68 . Webb...

... that cause the μ DMFC malfunction. Lattice-Boltzmann simulations were performed in this paper to simulate the two-phase flow in a microchannel with an orifice which emulates the bubble dynamics in a simplified porous diffusion layer and in the flow channel. A two-dimensional, nine-velocity model...