... the solution domain, the overall structure of the system of partial differential equations, boundary conditions, and initial conditions. The distributions of stress and lithium concentration in a hollow-cylindrical nanoelectrode are obtained. The high degree of conformity between the numerical results...

...-dimensional, simultaneous, partial differential equations of mass, energy, and electrochemistry and neglecting the stack direction variation effect, is developed. The results show that the fuel utilization increases with a decrease in the molar flow rate, and the average current density decreases when...

... of partial differential equations for the water depth and gas flow rate that depend on distance down the channel and time. Steady solutions of these equations are explored to determine the amount of liquid water that accumulates in the channel over a broad range of fuel cell operating conditions. 03 09...

... based on partial differential equations and the extraction of kinetics parameters by inverse modeling. For the model setup, various software tools are used. The simulation of laminar free flow is performed by the commercial code COMSOL . A finite volume code is used for the simulation of the reactive...

... diffusion, migration, and reaction phenomena of the chemical components in an undersaturated air pore and ionomer. One challenging feature of the work is the description of the TPB by a system of nonlinear partial differential equations (PDEs), coupling bulk, and surface-diffusion phenomena, which offers...

...J. Fuhrmann; B. Haasdonk; E. Holzbecher; M. Ohlberger In this issue, we focus on the processes on the scale of a single cell. The spatial distribution of the species is modeled by systems of partial differential equations describing coupled transport and reactions. The so created models...

... dynamic model of fuel cell air management system, suited for multivariable controller design, system optimization, and supervisory control strategy. In a first step, the dual analytical approach based on lumped and distributed parameter models is detailed: The partial differential equations deduced from...

.... The agreement between the obtained results is very good. electric resistance finite difference methods finite element analysis partial differential equations solid oxide fuel cells fuel cell solid oxide fuel cell ohmic resistance partial differential equation finite elements method finite...

... dynamical model partial differential equations electrochemistry simulation molten carbonate fuel cell Over the last decades, energy production systems based on molten carbonate fuel cells (MCFCs) have gradually gained interest both in many research fields and in industrial contexts ( 1 2 3 4...