The Application Gallery features COMSOL Multiphysics® tutorial and demo app files pertinent to the electrical, structural, acoustics, fluid, heat, and chemical disciplines. You can use these examples as a starting point for your own simulation work by downloading the tutorial model or demo app file and its accompanying instructions.

Search for tutorials and apps relevant to your area of expertise via the Quick Search feature. To download the MPH-files, log in or create a COMSOL Access account that is associated with a valid COMSOL license. Note that many of the examples featured here can also be accessed via the Application Libraries that are built into the COMSOL Multiphysics® software and available from the File menu.


1D Plane Slider Bearing

This benchmark model computes the load-carrying capacity of a one dimensional hydrodynamic slider bearing. The results are compared with analytic expressions obtained by solving the Reynolds equations directly in this simple case.

Interference Fit Connection in a Mountain Bike Fork

Interference fit is a technique used to join two pipes with each other. One pipe that is larger than the available space is cooled down. Once shrunk it is fitted into the available space of a larger pipe that in turn expands. At the interface a contact pressure builds up that determines the strength of the connection. This type of connection is simulated in a model of a mountain bike fork where ...

Buoyancy Flow in Air

This example studies the stationary state of free convection in a cavity filled with air and bounded by two vertical plates. To generate the buoyancy flow, the plates are heated at different temperatures, set in a range to keep the flow laminar.

Modeling Irregular Shapes by Using Interpolation and Image Data

This file shows how to create a surface of an irregular shape based on text, image, or elevation data. This approach is best suited for data where the height (or elevation) is a function of _x_- and _y_-coordinates. The data is of the Matterhorn, a European mountain located in the Alps. In short, the procedure includes: * Importing a text file, image file, or elevation data into a function ...

Electrical Heating in a Busbar

This tutorial model of the Joule heating effect in a busbar demonstrates how to synchronize an assembly between Inventor and COMSOL, how to modify the geometry from COMSOL, and how to run a geometric parametric sweep.

Stray Current Pipeline Corrosion

The impressed current cathodic protection (ICCP) system is often employed to mitigate corrosion of buried pipelines in the oil and gas industry. Metallic objects such as buried pipelines, which are present within the current flow of the ICCP system, may suffer from the stray current interactions leading to accelerated corrosion. This tutorial model demonstrates stray current corrosion of a ...

Thermal Controller, Reduced-Order Model

Large FEM simulations can be costly and, if repeated simulations are needed, it can be beneficial to use reduced-order models (ROMs). ROMs are typically valid only in the vicinity of their design conditions and have lower accuracy, but the simulation time is significantly shorter. The objective for model reduction is to provide a sufficiently accurate representation of the input-output dynamics ...

Millimeter-Range Focal Length Lens with the Beam Envelope Method - new

Optical lenses of millimeter size cannot easily be analyzed with the *Electromagnetic Waves, Frequency Domain* interface on standard workstations due to the large number of finite element mesh elements required. This model explains how the *Electromagnetic Waves, Beam Envelopes* interface can be used to analyze a plano-convex lens with a 1 mm focal length. The results are compared with the ...

Isolator Thickness Effect

The use of Aluminum (Al) isolator is a commonly employed mitigation strategy for galvanic corrosion between magnesium alloy (Mg) and mild steel (MS). The present model demonstrates the effect of Al isolator thickness on galvanic corrosion severity using a parametric study. The electrode kinetics is implemented here using the experimental polarization data available in literature.

Four-Bar Mechanism with Assembly Defect

This is a benchmark model for flexible multibody dynamics. This model simulates the dynamic behavior of a planar four-bar mechanism when one of the joints has a defect. The out-of-plane motion in the mechanism, caused by the defect in the joint, is compared with the results from the reference.