Pregled bibliografske jedinice broj: 1084321
Stability Issues of Fuel Cell Models in the Activation and Concentration Regimes
Stability Issues of Fuel Cell Models in the Activation and Concentration Regimes // Journal of Electrochemical Energy Conversion and Storage, 15 (2018), 4; 41008, 7 doi:10.1115/1.4039858 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1084321 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Stability Issues of Fuel Cell Models in the Activation and
Concentration Regimes
Autori
Beale, S. B. ; Reimer, U. ; Froning, D. ; Jasak, H. ; Andersson, M. ; Pharoah, J. G. ; Lehnert, W.
Izvornik
Journal of Electrochemical Energy Conversion and Storage (2381-6872) 15
(2018), 4;
41008, 7
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
fuel cell ; mass transfer ; numerical stability ; solid oxide fuel cell ; polymer electrolyte fuel cell
Sažetak
Code stability is a matter of concern for three-dimensional (3D) fuel cell models operating both at high current density and at high cell voltage. An idealized mathematical model of a fuel cell should converge for all potentiostatic or galvanostatic boundary conditions ranging from open circuit to closed circuit. Many fail to do so, due to (i) fuel or oxygen starvation causing divergence as local partial pressures and mass fractions of fuel or oxidant fall to near zero and (ii) nonlinearities in the Nernst and Butler-Volmer equations near open-circuit conditions. This paper describes in detail, specific numerical methods used to improve the stability of a previously existing fuel cell performance calculation procedure, at both low and high current densities. Four specific techniques are identified. A straight channel operating as a (i) solid oxide and (ii) polymer electrolyte membrane fuel cell is used to illustrate the efficacy of the modifications
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus