two-dimensional mathematical model of an air-cathode

Analytical solutions of an isothermal two

2018/11/23Fig. 1 depicts the two-dimensional domain of the model comprising a channel of length L and depth 2 h in which laminar flow of the reactant gas occurs along the axial (x-) direction and flow gradient is along the transverse (y-) direction. Channel wall is located at y

Studying branching of a cathode

A cathode-directed streamer in air is modeled using the hypothesis that branching is initiated by large electron avalanches that develop in a strong electric field in the front of streamer head. A series of streamer discharge simulations are carried out using a three-dimensional numerical model. The possibility of streamer branching is shown as a result of the interaction with two electron

Lithium–air battery

The lithium–air battery (Li–air) is a metal–air electrochemical cell or battery chemistry that uses oxidation of lithium at the anode and reduction of oxygen at the cathode to induce a current flow.[1] Pairing lithium and ambient oxygen can theoretically lead to electrochemical cells with the highest possible specific energy. Indeed, the

One Dimensional, Fully Transient Model of

The mathematical model is solved using a finite elements approach developed at the I.U.S.T.I. Chapter 1. Introduction 1 oxidant (in general, the oxygen in the air) is fed at the cathode by the way of flow channels cut into two electronically conductive collector

Development and experimental validation of a dynamic thermal and water distribution model of an open cathode

Therefore, a two-dimensional, non-isothermal, dynamic model of a 100W open cathode, self-humidified PEM fuel cell system has been developed, that is capable of representing system specific control mechanisms for water and thermal management. The model

Two

A two-dimensional mathematical model has been developed for characterizing and predicting the dynamic performance of an air-cathode MFC with graphite fiber brush used as anode. The charge transfer kinetics are coupled to the mass balance at both electrodes considering the brush anode as a

Mathematical Simulation of Direct Glucose Fuel Cell

implants. In this thesis, a one dimensional mathematical model is developed to simulate Direct Glucose Fuel Cell performance. The model accounts simultaneously for mass transport of reactants, products and intermediate species, together with reaction

Hollow Cathode Simulations with a First

A mathematical model of the ion–acoustic turbulence that is known to develop in the plume of hollow cathodes is presented. The model takes the form of a partial differential equation for the ion–acoustic wave energy density that can be solved concurrently with a set

Two

The model is able to handle the situation where a single-phase region co-exists with a two-phase zone in the air cathode. For the first time, the polarization curve as well as water and oxygen concentration distributions encompassing both single- and two-phase regimes of the air cathode are presented.

One Dimensional, Fully Transient Model of

The mathematical model is solved using a finite elements approach developed at the I.U.S.T.I. Chapter 1. Introduction 1 oxidant (in general, the oxygen in the air) is fed at the cathode by the way of flow channels cut into two electronically conductive collector

Numerical Simulation to Air Pollution Emission Control

A steady state two-dimensional mathematical model of urban heat island was used to describe the dispersion of air pollution with mesoscale wind velocity and meteorological parameters in []. The genesis of air pollution was area source emitted from the ground.

A 3D, Multiphase, Multicomponent Model of the Cathode and

A 3D, Multiphase, Multicomponent Model of the Cathode and Anode of a PEM Fuel Cell T. Berning and N. Djilaliz Institute for Integrated Energy Systems, University of Victoria, Victoria, British Columbia V8W 3P6, Canada A computational fluid dynamics multiphase

B352 Journal of The Electrochemical Society, 0013

present model, built upon an earlier model of Wang and Wang,30 implements a full model for the catalyst layer instead of treating it as an interface. In the following, a 3D, two-phase mathematical model of DM-FCs with the above-mentioned features is presented

Dimensional Analysis of Average Diameter of Bubbles

Li et al. [] used water model experiment to validate the mathematical model and then a CFD-PBM coupled model was used to calculate the gas bubble size distribution. Liu et al. [ 29 ] developed a three-dimensional mathematical model for simulation of flow, temperature, and concentration fields in a pilot-scale rotary hearth furnace using a commercial CFD software, FLUENT.

Mathematical Model for the Solid Electrolyte Fuel Cell

An analytically solvable mathematical model for the cathode of a solid polymer electrolyte fuel cell is proposed. The problem of diffusion in a multicomponent air-vapor mixture in a porous cathode and water transport due to hydrodynamic and electroosmotic forces is solved. The volt-ampere characteristic of the fuel cell is determined taking into account the polarization characteristics and

A SIMPLE MATHEMATICAL MODEL OF THERMAL_

Part 1. Model predictions without liquid water transport, J. Electrochem. Soc. 150 (2003) A1503–A1509. [7] S. Mazumder, J.V. Cole, Rigorous three dimensional mathematical modeling of proton exchange membrane fuel cells. Part 2. Model predictions with

Determination of optimal parameters for dual

2014/12/9Kulikovsky developed a two-dimensional model of the cathode compartment of a PEFC with gas channels. Rowe and Li [7] proposed a one-dimensional non-isothermal model of a PEFC to investigate the effects of various design and operating conditions on the cell performance.

An improved two

2005/5/30A two-dimensional model for PEM fuel cell cathode has been developed. The model treats the catalyst layer as agglomerates of polymer electrolyte coated catalyst particles. In this improved model, transport of the two charged species – electrons and ions – as well as that of the chemical species within the catalyst layer is considered.

Detailed Multi‐dimensional Modeling of Direct Internal

The mathematical model of the processes taking place in the SOFC fuel and air channels, diffusion and reaction layers, and electrolyte is formulated by applying DGM‐SMM based mass transport, the momentum conservation (Navier‐Stokes equation), the energy

One Dimensional, Fully Transient Model of

The mathematical model is solved using a finite elements approach developed at the I.U.S.T.I. Chapter 1. Introduction 1 oxidant (in general, the oxygen in the air) is fed at the cathode by the way of flow channels cut into two electronically conductive collector

Two

The model is able to handle the situation where a single-phase region co-exists with a two-phase zone in the air cathode. For the first time, the polarization curve as well as water and oxygen concentration distributions encompassing both single- and two-phase regimes of the air cathode are presented.

An Investigation of Direct Hydrocarbon (Propane) Fuel

H. Khakdaman, A two dimensional model of a direct propane fuel cell with an interdigitated flow field [Ph.D. thesis], University of Ottawa, 2012. H. Khakdaman, Y. Bourgault, and M. Ternan, "A Mathematical Model of a Direct Propane Fuel Cell," Journal ofView at:

A SIMPLE MATHEMATICAL MODEL OF THERMAL_

Part 1. Model predictions without liquid water transport, J. Electrochem. Soc. 150 (2003) A1503–A1509. [7] S. Mazumder, J.V. Cole, Rigorous three dimensional mathematical modeling of proton exchange membrane fuel cells. Part 2. Model predictions with

THREE DIMENSIONAL ANALYSIS OF TRANSPORT AND REACTION

1999; Yi and Nguyen, 1999) have been made to develop two-dimensional (2-D) mathematical models for the problem, but the gross approximation of these 2-D models is apparent due to the highly three-dimensional nature of the interdigitated flow field. In the

Two‐Dimensional Modeling of Self‐Propagating

A two‐dimensional finite element model is developed to study the reaction kinetics and heat transfer during the self‐propagating high‐temperature synthesis of La0.6Sr0.4MnO3, a cathode and interconnect material used in solid oxide fuel cells. The activation energy of La0.6Sr0.4MnO3 formation was calculated from experimental temperature history. The calculated spatial‐temporal

Using an ILU/Deflation Preconditioner for Simulation of

Using an ILU/Deflation Preconditioner for Simulation of a PEM Fuel Cell Cathode Catalyst Layer - Volume 14 Issue 3 - Kyle J. Lange, Pang-Chieh Sui, Ned Djilali Numerical aspects of a pore scale model are investigated for the simulation of catalyst layers of polymer

Development and Experimental Validation of a Dynamic Thermal and Water Distribution Model of an Open Cathode

Therefore, a two-dimensional, non-isothermal, dynamic model of a 100W open cathode, self-humidified PEM fuel cell system has been developed, that is capable of representing system specific control mechanisms for water and thermal management .

Experimental Testing and Validation of the

The proposed model in this paper presents a simplified zero-dimensional mathematical model for a self-humidifying 1 kW PEM fuel cell developed by modelling the major electric and thermodynamic variables and parameters involved in the operation of a PEM fuel

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