Sökning: onr:"swepub:oai:lup.lub.lu.se:83df1a17-0f28-40f4-884b-26db5cd7b279" >
Stability Issues of...
Stability Issues of Fuel Cell Models in the Activation and Concentration Regimes
-
- Beale, S. B. (författare)
- Queen's University at Kingston,Jülich Research Centre
-
- Reimer, U. (författare)
- Jülich Research Centre
-
- Froning, D. (författare)
- Jülich Research Centre
-
visa fler...
-
- Jasak, H. (författare)
- University of Zagreb
-
- Andersson, M. (författare)
- Lund University,Lunds universitet,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH,Jülich Research Centre
-
- Pharoah, J. G. (författare)
- Queen's University at Kingston
-
- Lehnert, W. (författare)
- Jülich Research Centre,RWTH Aachen University
-
visa färre...
-
(creator_code:org_t)
- 2018-05-07
- 2018
- Engelska.
-
Ingår i: Journal of Electrochemical Energy Conversion and Storage. - : ASME International. - 2381-6872 .- 2381-6910. ; 15:4
- Relaterad länk:
-
http://dx.doi.org/10...
-
visa fler...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Nyckelord
- fuel cell
- mass transfer
- numerical stability
- polymer electrolyte fuel cell
- solid oxide fuel cell
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas