G. Vaivars, P. Ndungu, and V. Linkov
South African Institute of Advanced Material Chemistry, University of the Western Cape, Cape Town, South Africa
In a fuel cell-powered engine, the fuel is converted to electrical energy through electrochemical reactions instead of combustion. Long term stability is required for automobile and other energy system applications. The agglomeration of catalyst particles leads to an irreversible decrease of the electrochemical performance, and there are no viable methods to compensate for this phenomenon.Complex ...
M. Vallance, and R. White
General Electric Global Research Center, Niskayuna, NY, USA
Department of Chemical Engineering, University of South Carolina, Columbia, SC, USA
Sodium/metal chloride storage batteries, used in hybrid propulsion applications, provide high energy and power densities safely and reliably. To understand the dynamics of electrochemical cycling, a high-temperature sodium/ferrous chloride storage cell was modeled in two dimensions. The time-dependent solution shows that a reaction front, starting at the interface with the negative electrode, ...
E. Firat, G. Bandlamudi, M. Crisogianni, P. Beckhaus, A. Heinzel
Centre for Fuel Cell Technology (ZBT), Duisburg,NRW, Germany
Heat management is crucial for the satisfactory operation of HT-PEM (High temperature polymer-electrolyte-membrane) fuel cells. Current work investigates the use of heat pipes in a HT PEMFC stack consisting of 24 cells, each with an active area of 300 cm^2. Heat pipes are known to be thermal superconductors operating on the principles of high convective heat transfer and phase transition. ...
R. E. White, and Long Cai
R.E. White & Associates LLC, Columbia, South Carolina, USA
Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina, USA
The existing lithium ion battery model in COMSOL’s Multiphysics software is extended to include the thermal effects. The thermal behavior of a lithium ion battery is studied during the galvanostatic discharge process with and without a pulse. The existing lithium ion battery model in COMSOL 3.5a is extended by adding an energy balance and the temperature dependence of properties of ...
J. Cheng, K.V. Sharp, and M.M. Mench
The Fuel Cell Dynamics and Diagnostics Laboratory and the Microscale Flow Laboratory, Department of Mechanical and Nuclear Engineering, Pennsylvania State University
The dynamics of fuel cell coolant flow with charged nanoparticles were modeled using COMSOL Multiphysics. A computational fluid dynamics physicochemical model of the multi-phase coolant flow has been formulated. For nanoparticles in the fluid, electrokinetic force, hydrodynamic force, and buoyancy forces have been taken into account for the prediction of electrodeposition rate onto channel ...
I.S. Laitinen, and J.T. Tanttu
Tampere University of Technology, Finland
In this paper, shell elements are used to reduce the complexity of a geometry in the modeling of an industrial scale copper electrolysis cell. The proposed model is described by multipysical since it takes into account interaction between electrical conduction and temperature. The model accuracy is estimated by comparing the simulation results to actual measurements.
University of South Carolina
In this presentation we introduce the concept of Electrochemical Engineering through simulations in COMSOL Multiphysics. Our special case studies are: • a Parallel Plate Electrochemical Reactor, • a Rotating Ring Disk System, • a 3D Lithium Ion Battery, • a Portable Power System, • a Corroding Surface. These examples are all industrial ones, which shows the power of using ...
Electrochemical etching of silicon (anodization) is a process that can be used for etching of forms of nearly arbitrary shapes. The difficulty of applying the process for mass production is in the many parameters influencing the process, such as electrolyte concentration and temperature, silicon substrate doping and type, and so on. COMSOL as an FEM simulation tool is very suitable for ...
Transient Modelling of a Fluorine Electrolysis Cell; Fully Coupled Electric Currents, Heat-Transfer, Diluted Species Transport and Laminar Bubbly Flow
R. Pretorius, P. L. Crouse, and C. J. Hattingh
University of Pretoria, Pretoria, Gauteng, South Africa
Metallurgical Testing and Consultation (MTC) cc, Farrarmere, South Africa
A laboratory-scale fluorine reactor was simulated with COMSOL Multiphysics®. This model employs fundamental fully coupled electron-, heat-, mass- and momentum transfer (two-phase) equations to deliver a transient model of the above-mentioned reactor. Quasi-steady-state results were produced for the current density, electric field, temperature, reactive species concentration, gas- and liquid ...
Ford Motor Company
Dr. Bernardi is a Research Engineer with Ford Motor Company in Dearborn, MI. Her research focuses on the analysis and simulation of electrochemical energy-storage and conversion systems. In particular, Dr. Bernardi develops mathematical models that predict system behavior and identify governing physicochemical processes. Experimental investigations support model development, analysis, and ...