Galeria de Modelos

A Galeria de Modelos possui arquivos do COMSOL Multiphysics de várias áreas de aplicação incluindo elétrica, mecânica, escoamento e química. Você pode baixar modelos prontos e também tutoriais passo-a-passo para montar seu modelo, e usá-lo como ponto de partida para o seu próprio modelo. Use a função de busca "Quick Search" para encontrar modelos na sua área de interesse e faça o login ou o seu cadastro no COMSOL Access, cadastrando a sua licença do COMSOL, para poder baixar os arquivos.

Current Density Distribution in a Solid Oxide Fuel Cell, AC Impedance Study - new

This model presents a study of the current density distribution in a solid oxide fuel cell (SOFC). The model includes the full coupling between the mass balances at the anode and cathode, the momentum balances in the gas channels, the gas flow in the porous electrodes, the balance of the ionic current carried by the oxide ion, and a balance of electronic current. A truly large number of ...

1D Isothermal Lithium-Ion Battery - new

This model demonstrates the Lithium-Ion Battery interface for studying the discharge and charge of a lithium-ion battery for a given set of material properties. The geometry is in one dimension and the model is isothermal. Battery developers can use the model to investigate the influence of various design parameters such as the choice of materials, dimensions, and the particle size distribution ...

Electrochemical Impedance Spectroscopy - new

Electrochemical impedance spectroscopy (EIS) is a common technique in which a small oscillating perturbation in cell potential is applied to an electrochemical system so as to interrogate the kinetic and transport properties. The Electroanalysis interface is used with a frequency domain study to simulate EIS for a range of electrode reaction rates. Nyquist and Bode plots illustrate the transition ...

Mass Transport and Electrochemical Reaction in a Fuel Cell Cathode - new

A stationary 3D model of a generic fuel cell cathode describing the mass fraction distribution of oxygen, water, and nitrogen, as well as the current distribution. The model uses Darcy's Law to describe convection, and couples this to Maxwell-Stefan diffusivities to also describe mass transport. The model shows that the current density in this fuel cell cathode is mass transfer governed by the ...

Cyclic Voltammetry at an Electrode - new

Cyclic voltammetry is a common analytical electrochemical technique, where the potential at a working electrode is swept over a range and back again while the current is recorded. The current-voltage waveform, referred to as a voltammogram, provides information about the reactivity and mass transport properties of an electrolyte. For large electrodes, the model is simplified to a 1D geometry by ...

Tutorial Model of a Lithium-Ion Battery - new

The following example is a 2D tutorial model of a lithium-ion battery. The cell geometry is not based on a real application; it is only meant to demonstrate a 2D model setup.

Capacity Fade of a Li-ion Battery - new

This 1D model example demonstrates how to use the Events interface in conjunction with a battery cell model to simulate battery capacity loss during cycling. The battery is switched between constant voltage and constant current operation, both during charge and discharge. Cycleable lithium is lost in the negative electrode due to a parasitic lithium/solvent reduction reaction.

Liquid Cooled Lithium Ion Battery Pack - new

This model simulates a temperature profile in a number of cells and cooling fins in a liquid-cooled battery pack. The model solves in 3D and for an operational point during a load cycle. A full 1D electrochemical model for the lithium battery calculates the average heat source.

All-Solid-State Lithium-Ion Battery - new

This example shows how to use the Tertiary Current Distribution interface to model the currents and electrolyte mass transport in a thin-film all-solid-state lithium-ion battery. A separate Transport of Diluted Species interface is coupled to the electrochemical reactions to model the mass transport of lithium in the positive electrode. Various discharge currents are studied, and the different ...

Species Transport in the Gas Diffusion Layers of a PEM - new

This example focuses on the species transport within the gas diffusion layers (GDLs) of a proton exchange membrane (PEM) fuel cell. The geometry models a cell with two adjacent flow channels of different pressures, a situation that may occur in a cell with serpentine flow channels, or in a cell using an interdigitated flow field design. The model uses current balances, mass transport equations ...

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