The Application Gallery features COMSOL Multiphysics tutorial and demo app files pertinent to the electrical, mechanical, fluid, and chemical disciplines. You can download ready-to-use tutorial models and demo apps with step-by-step instructions for how to create them yourself. The examples in the gallery serve as a great starting point for your own simulation work.

Use the Quick Search to find tutorials and apps relevant to your area of expertise. Log in or create a COMSOL Access account that is associated with a valid COMSOL license to download the MPH-files.


Galvanized Nail

This tutorial example serves as an introduction to the Corrosion Module and models the metal oxidation and oxygen reduction current densities on the surface of a galvanized nail, surrounded by a piece of wet wood, which acts as electrolyte. The protecting zinc layer on the nail is not fully covering, so that at the tip of the nail the underlaying iron surface is exposed. First the electrolyte ...

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 ...

Corrugated Circular Horn Antenna

The excited TE mode from a circular waveguide passes along the corrugated inner surface of a circular horn antenna where a TM mode is also generated. When combined, these two modes give lower cross-polarization at the antenna aperture. By using this application, the antenna radiation characteristics, as well as aperture cross-polarization ratio can be improved by modifying the geometry of the ...

1D Lithium-Ion Battery Drive-Cycle Monitoring

This application shows how a battery cell exposed to a hybrid electric vehicle drive cycle can be investigated with the Lithium-Ion Battery interface in COMSOL. This model predicts the battery behavior to make comparisons of the monitored properties. They can be used to understand the battery's behavior during the cycle better, since the model includes can calculate more than is measurable, for ...

Geometric Parameter Optimization of a Tuning Fork

This model computes the fundamental eigenfrequency and eigenmode for a tuning fork that is synchronized from SolidWorks via the LiveLink interface. The length of the fork is then optimized so that the tuning fork sounds the note A, 440 Hz.

Creating a Phase Envelope with a Multicomponent Flash Calculation

* A flash calculation is an equilibrium calculation of a system where several components (species) and phases are present at the same time. This is a demonstration how to use the thermodynamics interface to make flash calculations from data provided external thermodynamic databases. The system in this model is Methane/Ethane/Propane, which would require 3D surfaces to plot the phase envelope. ...

Corner Cube Retroreflector

A corner cube retroreflector can be used to reflect rays so that their reinitialized trajectories are parallel to their initial trajectories, regardless of the angle of incidence. This tutorial model shows how to simulate the reflection of a bundle of rays at a cube corner retroreflector using the Geometrical Optics interface.

Andrew's Squeezing Mechanism

This is a benchmark model for rigid body dynamics. This model simulates the dynamic behavior of "Andrew’s squeezing mechanism", which is force driven and requires a very small time scale. Various angles in the mechanism are compared with the results from the reference.

HI Batch Reactor

This tutorial example illustrates the versatility of the *Reaction Engineering* interface. The hydrogen iodine reaction is modeled in a batch reactor with constant volume. Both isothermal and non-isothermal conditions are modeled.

Rössler Attractor

A Rossler attractor is a system of three non-linear, ordinary differential equations. The Rossler attractor is similar in nature to the Lorenz attractor. The non-linear equations can be solved in COMSOL by conveniently using the Massless formulation available in the Mathematical Particle Tracing interface.