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dc.contributor.authorQin, Chao-Zhong
dc.contributor.authorGuo, Bo
dc.contributor.authorCelia, Michael
dc.contributor.authorWu, Rui
dc.date.accessioned2019-05-08T19:59:52Z
dc.date.available2019-05-08T19:59:52Z
dc.date.issued2019-07-20
dc.identifier.citationQin, C. Z., Guo, B., Celia, M., & Wu, R. (2019). Dynamic Pore-Network Modeling of Air-Water Flow through Thin Porous Layers. Chemical Engineering Science.en_US
dc.identifier.issn00092509
dc.identifier.doi10.1016/j.ces.2019.03.038
dc.identifier.urihttp://hdl.handle.net/10150/632216
dc.description.abstractThin porous layers, that have large aspect ratios, are seen in many applications such as hydrogen fuel cells and hygiene products, in which air-water immiscible flow is of great interest. Direct numerical simulations based on Navier-Stokes equation are computationally expensive, and even prohibitive for low capillary number flow such as water flooding in low-temperature polymer electrolyte fuel cells. Alternatively, the pore-network modeling needs much less computational resources, while still retaining essentials of the pore-structure information. In this work, a dynamic pore-network model of air-water flow with phase change has been developed. We focus on drainage processes through thin porous layers, in which liquid water is the nonwetting phase. Three test cases are conducted, namely, air-water flow through a thin porous layer, air-water flow through a bilayer of fine and coarse thin porous layers, and water flooding in the gas diffusion layer of a polymer electrolyte fuel cell with phase change between water and its vapor. Using these test cases, we aim to demonstrate the application of dynamic pore-network modeling in thin porous media studies. In particular, we discuss the challenge of modeling thin porous media at the average scale, and highlight the role of phase change in removing liquid water from the cathode gas diffusion layer. (C) 2019 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipDarcy Center of Utrecht University; National Natural Science Foundation of China [51776122]; Eindhoven University of Technologyen_US
dc.language.isoenen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0009250919302532en_US
dc.rights© 2019 Elsevier Ltd. All rights reserved.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectThin porous mediaen_US
dc.subjectPore-network modelingen_US
dc.subjectTwo-phase flowen_US
dc.subjectpolymer electrolyte fuel cell (PEFC)en_US
dc.subjectWater and heat managementen_US
dc.subjectPhase changeen_US
dc.titleDynamic pore-network modeling of air-water flow through thin porous layersen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Hydrol & Atmospher Scien_US
dc.identifier.journalCHEMICAL ENGINEERING SCIENCEen_US
dc.description.note24 month embargo; published online: 16 March 2019en_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.source.journaltitleChemical Engineering Science
dc.source.volume202
dc.source.beginpage194
dc.source.endpage207


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