Chemistry, Physical
; Electrochemistry
; Energy & Fuels
WOS研究方向:
Chemistry
; Electrochemistry
; Energy & Fuels
英文摘要:
Climate change, energy security and air pollution are all motivators for the further development of fuel cells. A volume of fluid approach was used to investigate the impact of dynamic contact angle boundary conditions (Kistler model), mainly at the gas diffusion layer surface but also at the channel wall, of a polymer electrolyte fuel cell gas channel. From this study, it is clear that a dynamic contact angle boundary condition, with advancing and receding contact angles, influences the droplet detachment characteristics, for example, the detachment time and droplet size. Implementing dynamic contact angle boundary conditions for a thin channel causes the droplet, after being reattached to the wall on the side opposite the GDL, to flow very slowly when attached to the wall, until it is merged with a second droplet and they exit the channel (but remain attached to the wall) fairly quickly. Similar phenomena are not observed while using a static contact angle. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
1.Lund Univ, Dept Energy Sci, S-22100 Lund, Sweden 2.Forschungszentrum Julich, Inst Energy & Climate Res, IEK 3, Electrochem Proc Engn, D-52425 Julich, Germany 3.Univ Zagreb, Mech Engn & Naval Architecture, HR-10000 Zagreb, Croatia 4.Queens Univ, Dept Mech & Mat Engn, Kingston, ON K7L 3N6, Canada 5.Rhein Westfal TH Aachen, Modelling Electrochem Proc Engn, D-52056 Aachen, Germany 6.JARA HPC, D-52428 Julich, Germany
Recommended Citation:
Andersson, M.,Vukcevic, V.,Zhang, S.,et al. Modeling of droplet detachment using dynamic contact angles in polymer electrolyte fuel cell gas channels[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2019-01-01,44(21):11088-11096