A numerical study on preconditioning and partitioning schemes for reactive transport in a PEMFC catalyst layer

2011 ◽  
Vol 200 (9-12) ◽  
pp. 905-916 ◽  
Author(s):  
Kyle J. Lange ◽  
Chinmay Misra ◽  
Pang-Chieh Sui ◽  
Ned Djilali
Keyword(s):  
Reactive Transport ◽  
Numerical Study ◽  
Catalyst Layer

Numerical study of the flow of a mixture of reacting gases in an inhomogeneous catalyst layer

2003 ◽  
Vol 3 ◽  
pp. 246-254
Author(s):  
C.I. Mikhaylenko ◽  
S.F. Urmancheev
Keyword(s):  
Velocity Field ◽  
Chemical Reactions ◽  
Porous Layer ◽  
Computational Experiment ◽  
Numerical Study ◽  
Fluid Velocity ◽  
Catalyst Layer ◽  
Granular Catalyst ◽  
Fluid Velocity Field

The behavior of a liquid flowing through a fixed bulk porous layer of a granular catalyst is considered. The effects of the nonuniformity of the fluid velocity field, which arise when the surface of the layer is curved, and the effect of the resulting inhomogeneity on the speed and nature of the course of chemical reactions are investigated by the methods of a computational experiment.

Experimental and numerical study of bimolecular reactive transport in a single rough-wall fracture

2021 ◽  
Vol 594 ◽  
pp. 125944
Author(s):  
Yajing Liu ◽  
Yong Liu ◽  
Qiankun Luo ◽  
Henan Li ◽  
Jiazhong Qian
Keyword(s):  
Reactive Transport ◽  
Numerical Study ◽  
Rough Wall

Computational and Experimental Studies on the Effect of Flow-Distributors on the Performance of PEMFC

2010 ◽  
Vol 7 (5) ◽  
Author(s):  
A. S. Bansode ◽  
T. Sundararajan ◽  
Sarit K. Das
Keyword(s):  
Proton Exchange Membrane ◽  
Numerical Study ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Catalyst Layer ◽  
Proton Exchange ◽  
Water Removal ◽  
Management Problem ◽  
Moderate Pressure ◽  
Product Water

Effective supply of reactants and product-water removal are the key issues in proton exchange membrane fuel cell (PEMFC) from the performance view point. Reactant distribution pattern can be one of the potential solutions for the well known water management problem in PEMFC. To study the effect of different flow configurations on the cell performance, three different flow-distributors, namely, parallel, serpentine, and mixed are analyzed numerically. A three-dimensional, numerical study was carried out in the three distributors for the identical reaction area. The effect of operating parameters such as flow rate and temperature was studied. The mixed flow-distributor is found to exhibit the best electrochemical performance as well as moderate pressure drop compared with the parallel and serpentine flow-distributors. The observation was confirmed by appropriate experimental study involving similar distributor geometries. Better reactant accessibility to the catalyst layer and moderate product-water removal from the cathode without diluting the reactant is argued to be the reason behind the better performance for the mixed-distributor.

scholarly journals A Numerical Study on the Impact of Cathode Catalyst Layer Loading on the Open Circuit Voltage

2020 ◽  
Vol MA2020-01 (38) ◽  
pp. 1677-1677
Author(s):  
Michael Moore ◽  
Shantanu Shukla ◽  
Kunal Karan ◽  
Adam Z. Weber ◽  
Iryna V. Zenyuk ◽  
...  
Keyword(s):  
Open Circuit Voltage ◽  
Numerical Study ◽  
Catalyst Layer ◽  
Open Circuit ◽  
Cathode Catalyst ◽  
Cathode Catalyst Layer ◽  
The Impact
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