A Galeria de Aplicações possui tutorias sobre o COMSOL Multiphysics® e aplicativos de demonstração pertinentes às áreas de elétrica, mecânica estrutural, acústica, escoamento e química. Você pode usar esses exemplos como um ponto de partida para o seu próprio trabalho de simulação baixando o modelo do tutorial ou o aplicativo e suas instruções. Use a função "Busca Rápida" para encontrar modelos da sua área de interesse. Para baixar os arquivos MPH, faça o login, ou se cadastre, no COMSOL Access usando uma licença válida do COMSOL, para poder baixar os arquivos MPH. Note que muitos dos exemplos disponibilizados aqui também podem ser acessados através da Application Libraries que faz parte do software COMSOL Multiphysics® e está disponível a partir do menu File.


Primary Current Distribution in a Lead-Acid Battery Grid Electrode

This 3D model example demonstrates the use of the Primary Current Distribution interface for modeling current distributions in electrochemical cells. In primary current distribution, the potential losses due to electrode kinetics and mass transport are assumed to be negligible, and ohmic losses are govern the current distribution in the cell. Here you investigate primary current distribution in ...

Frame Fatigue Life

Analyzing fatigue with simulation, rather than running fatigue experiments, is a much quicker way to determine whether a certain design will fail after repeated loading and unloading. This application allows you to evaluate the fatigue life of a frame with a cutout. It is useful for understanding the concept of fatigue and how to build an equivalent app for your own designs. The Frame Fatigue ...

Equivalent Properties of Periodic Microstructures

Periodic microstructures are frequently found in composite materials, such as carbon fibers and honeycomb structures. They can be represented by a unit cell repeated along three directions of propagation. To reduce computational costs, simulations may replace all of the microscopic details of a composite material with a homogeneous domain with equivalent properties. This app computes the ...

Discharging Tank

This tutorial model illustrates how to calculate the pressure drop and initial flow rate in a pipe system connected to water tank. The Pipe Flow interface contains ready to use friction models accounting for the surface roughness of pipes as well as pressure losses in bends and valves.

Beam Section Calculator

The Beam Section Calculator app allows you to evaluate cross section data for a wide range of American and European standard beams. Given a set of forces and moments acting on the section, you can also compute a detailed stress distribution. Calculated cross section data can also easily be extracted for use as input data for beam analyses in COMSOL Multiphysics. The app is built upon the ...

An Introduction to Shape Optimization in COMSOL

This example exemplifies the basics in how to optimize shapes using COMSOL Multiphysics®. A more detailed description of the phenomenon and the modeling process can be seen in the blog post "[Designing New Structures with Shape Optimization](https://www.comsol.com/blogs/designing-new-structures-with-shape-optimization/)".

Inductive Liquid Metal Pump

Induction pumps are used in high temperature cooling systems. The principle of operation is equivalent to a linear three phase induction motor. The lack of moving parts and the pumped liquid being kept in a hermetically closed system are clear advantages. This model shows how to simulate a generic liquid Na pump.

1D Isothermal Lithium-Air Battery

Rechargeable lithium-air batteries have recently attracted great interest mainly due to their high energy density. The theoretical value is about 11400 Wh/kg which is around 10 times greater than the lithium-ion batteries. In this tutorial, discharge of a lithium-air battery is simulated using the *Lithium-ion Battery* interface. The transport of oxygen (from external air) in the porous carbon ...

Truss Bridge Designer

The Truss Bridge Designer app is an example of how to design a simulation tool for a class of civil engineering structures, in this case a Pratt truss bridge. Such a bridge is characterized by the diagonal beams on each side of the bridge, which all slant down and in toward the center of the span. Because of this design, the diagonal beams are subjected only to tension, while the vertical beams, ...

Electrochemical Impedance Spectroscopy in a Fuel Cell

A fuel cell unit cell is modeled using the full Butler-Volmer expression for the anodic and cathodic charge transfer reactions. The anodic and cathodic overpotentials depend on the local ionic and electronic potentials, which are obtained from the charge balance equations for ionic and electronic current. A small sinusoidal perturbation of the potential around a given cell voltage is applied and ...