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	A domain decomposition method for two-phase transport model in the cathode of a polymer electrolyte fuel cell
	Sun, Pengtao ; Xue, Guangri ; Wang, Chao-yang ; Xu, Jinchao
	2009
关键词	Two-phase model Polymer electrolyte fuel cell Kirchhoff transformation Domain decomposition Dirichlet-Neumann alternating iteration Combined finite element-upwind finite volume method FINITE-ELEMENT METHODS CONVECTION-DIFFUSION PROBLEM SCALAR CONSERVATION-LAWS VOLUME SCHEMES POROUS-MEDIA FLOW CONVERGENCE DIMENSIONS EQUATIONS LAYER
英文摘要	Using Kirchhoff transformation, we develop a Dirichlet-Neumann alternating iterative domain decomposition method for a 2D steady-state two-phase model for the cathode of a polymer electrolyte fuel cell (PEFC) which contains a channel and a gas diffusion layer (GDL). This two-phase PEFC model is represented by a nonlinear coupled system which typically includes a modified Navier-Stokes equation with Darcy's drag as an additional source term of the momentum equation, and a convection-diffusion equation for the water concentration with discontinuous and degenerate diffusivity. For both cases of dry and wet gas channel, we employ Kirchhoff transformation and Dirichlet-Neumann alternating iteration with appropriate interfacial conditions on the GDL/channel interface to treat the jump nonlinearities in the water equation. Numerical experiments demonstrate that fast convergence as well as accurate numerical solutions are obtained simultaneously owing to the implementation of the above-described numerical techniques along with a combined finite element-upwind finite volume discretization to automatically control the dominant convection terms arising in the gas channel. (C) 2009 Elsevier Inc. All rights reserved.; Computer Science, Interdisciplinary Applications; Physics, Mathematical; SCI(E); 17; ARTICLE; 16; 6016-6036; 228
语种	英语
出处	SCI
出版者	计算物理学杂志
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/247563]
专题	数学科学学院
推荐引用方式 GB/T 7714	Sun, Pengtao,Xue, Guangri,Wang, Chao-yang,et al. A domain decomposition method for two-phase transport model in the cathode of a polymer electrolyte fuel cell. 2009-01-01.

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