TY - GEN
T1 - A combined finite element-upwind finite volume-Newton's method for liquid-feed direct methanol fuel cell simulations
AU - Sun, Pengtao
AU - Xue, Guangri
AU - Wang, Chaoyang
AU - Xu, Jinchao
PY - 2008
Y1 - 2008
N2 - In this paper, a three-dimensional, two-phase transport model of liquid-feed direct methanol fuel cell (DMFC), which is based on the multiphase mixture formulation and encompasses all components in a DMFC using a single computational domain, is specifically studied and simulated by a combined finite element-upwind finite volume discretization along with Newton's method, where flow, species, charge-transport and energy equations are simultaneously addressed. Numerical simulations in 3D are carried out to explore and design efficient and robust numerical algorithms for the sake of fast and convergent nonlinear iteration. A more reasonable source term of water transport equation, and a series of efficient numerical algorithms and discretizations are specifically designed and analyzed to assist in achieving this goal. Our numerical simulations demonstrate that the convergent and correct physical solutions can be attained within 100 more steps, against the oscillating and long-running nonlinear iterations (up to 5000 steps) operated by standard finite element/volume method without new numerical techniques.
AB - In this paper, a three-dimensional, two-phase transport model of liquid-feed direct methanol fuel cell (DMFC), which is based on the multiphase mixture formulation and encompasses all components in a DMFC using a single computational domain, is specifically studied and simulated by a combined finite element-upwind finite volume discretization along with Newton's method, where flow, species, charge-transport and energy equations are simultaneously addressed. Numerical simulations in 3D are carried out to explore and design efficient and robust numerical algorithms for the sake of fast and convergent nonlinear iteration. A more reasonable source term of water transport equation, and a series of efficient numerical algorithms and discretizations are specifically designed and analyzed to assist in achieving this goal. Our numerical simulations demonstrate that the convergent and correct physical solutions can be attained within 100 more steps, against the oscillating and long-running nonlinear iterations (up to 5000 steps) operated by standard finite element/volume method without new numerical techniques.
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U2 - 10.1115/FuelCell2008-65035
DO - 10.1115/FuelCell2008-65035
M3 - Conference contribution
AN - SCOPUS:77952665676
SN - 0791843181
SN - 9780791843185
T3 - Proceedings of the 6th International Conference on Fuel Cell Science, Engineering, and Technology
SP - 851
EP - 864
BT - Proceedings of the 6th International Conference on Fuel Cell Science, Engineering, and Technology
T2 - 6th International Conference on Fuel Cell Science, Engineering, and Technology
Y2 - 16 June 2008 through 18 June 2008
ER -