La Galleria delle Applicazioni raccoglie un'ampia varietà di modelli tutorial e di app dimostrative realizzati con COMSOL Multiphysics in diversi ambiti applicativi, inclusi quelli elettrico, meccanico, fluidico e chimico. E' possibile scaricare i file dei modelli e delle app demo pronti all'uso e le istruzioni step-by-step per costruirli, e utilizzarli come punto di partenza per le proprie simulazioni.

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All-Solid-State Lithium-Ion Battery

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 ...

1D Lithium-Ion Battery Model for Determination of Optimal Battery Usage and Design

This application example is useful for investigation of the following: Voltage, polarization (voltage drop), internal resistance, state-of-charge (SOC), and rate capability, in lithium-ion batteries under isothermal conditions. Some of the listed properties play an important role in battery management systems (BMS) in, for instance, electric and hybrid electric vehicles (see figure). The more ...

1D Lithium-Ion Battery Model for Power vs Energy Evaluation

A battery’s possible energy and power outputs are crucial to consider when deciding in which type of device it can be used. A cell with high rate capability is able to generate a considerable amount of power, that is, it suffers from little polarization (voltage loss) even at high current loads. In contrast, a low rate-capability cell has the opposite behavior. The former type is often denoted ...

Fuel Cell with Serpentine Flow Field

This example models the flow and mass transport in the channels and the gas diffusion layer (GDL) of a polymer electrolyte fuel cell. The cathode electrode reaction is modeled as a boundary condition, where the local current density depends on the overpotential and the local oxygen concentration. The overpotential is solved for along the cathode boundary by the use of a distributed DAE. The ...

Modeling of an Enzyme-Based Biofuel Cell Anode

Enzyme-based biofuel cells (EBFCs) use biomass and specific enzymes known as biocatalysts in order to convert chemical energy into electrical energy. At the anode of an EBFC, the biomass (substrate) is oxidized to produce protons and electrons. Mediators are used in the anode to shuttle the electrons from enzymes to electrodes. At the cathode, the oxidant (oxygen) reacts with the protons and ...

1D Isothermal Nickel-Metal Hydride Battery

This model simulates the discharge of a Nickel-Metal Hydride (NiMH) battery using the Battery with Binary Electrolyte interface. The geometry is in one dimension and the model is isothermal. The model serves as an introduction to NiMH modeling, and can be further extended to include various side reactions.

Soluble Lead-Acid Redox Flow Battery

In a redox flow battery electrochemical energy is stored as redox couples in the electrolyte, which is stored in tanks outside the electrochemical cell. During operation, electrolyte is pumped through the cell and, due to the electrochemical reactions, the individual concentrations of the active species in the electrolyte are changed. The state of charge of the flow battery is determined by ...

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