Model Gallery

The Model Gallery features COMSOL Multiphysics model files from a wide variety of application areas including the electrical, mechanical, fluid, and chemical disciplines. You can download ready-to-use models and step-by-step instructions for building the model, and use these as a starting point for your own modeling work. Use the Quick Search to find models relevant to your area of expertise, and login or create a COMSOL Access account that is associated with a valid COMSOL license to download the model files.

Gate Valve in Pipe Branch

A gate valve in a piping branch point is simulated using high viscosity in the gate itself. A parametric run varies gate position from 100% open to fully closed

Deformation of a Feeder Clamp

This example analyzes the deformation of a feeder clamp under stress. The clamp secures a feeder that carries high-frequency electromagnetic fields, and it’s important that it remains as straight as possible. Forces on the clamp include both those from the feeder as well as those on the sleeve arising from the clamping screw. In this analysis, the feeder clamp is attached to a wall using ...

Reactive Muffler

This is a benchmarking model to compare the abilities of COMSOL to an analytical solution. The model examines the sound-transmission properties of an idealized reactive muffler with infinitely long inlet and outlet pipes and one expansion chamber. The infinitely long inlet and outlets are simulated through a reflection-free source at the inlet pipe and a reflection-free end of the outlet pipe, ...

The Black-Scholes Equation

The Black-Scholes equation, computes the value u of a European stock option. Black-Scholes derived an analytical expression for the solution to this problem. However, the formula works only for certain cases; for instance, you cannot employ it when sigma and r are functions of x and t. Here, sigma denotes the volatility, r the continuous compounding rate of interest, and x the underlying asset ...

Numerical modeling of glacier flow

Glacier ice is generally treated as an incompressible, heat-conducting non-Newtonian fluid. The viscosity of ice depends on temperature and on the state of deformation. In the case of Storglaciären, however, the influence of temperature-dependent viscosity on the general flow field of the glacier is small. With COMSOL Multiphysics, it is relatively easy to verify that neglecting this ...

Vibrations in a Milk Container

This example illustrates a multiphysics application that involves a fluid-structure interaction. It simulates a filled milk container on a conveyor belt, which starts moving. The methodology presented here defines two problems, one for the container walls and one for the fluid. The two problems are subsequently merged into one problem using a special interface condition that imposes ...

Tapered Cantilever with Two Load Cases

This example shows a 2D plane stress model of a thin tapered cantilever. Different boundary and load scenarios are examined. It is demonstrated how to apply and how to evaluate different load and constraint groups. Resulting stresses are compared to NAFEMS benchmark values and they are found to be in good agreement.

Image Import: Homogenized Pore Scale Flow and Thermal Conduction

You can now use image data to represent 2D material distributions or to identify regions with different materials by their color or gray scale. Images used in this way can have many origins such as scanning electron microscope (SEM), computed tomography (CT), or magnetic resonance imaging (MRI). An important application of image import is for easy computation of equivalent volume-averaged ...

A Variety of Analyses of a Steel Component

This example shows a plane stress analysis of a mechanical component. The component is cut from a 4 mm steel plate. The thickness is small compared to the length and breadth in the x-y plane. Due to this, and the fact that the applied loads lie in the x-y plane, the out-of-plane stress can be assumed to be negligible. The plane stress application mode is based on this assumption. The ...

Stationary Incompressible Flow over a Backstep using Argyris Elements

This model examines the physics of plane, incompressible and steady flow over a backward step in the absence of external forces. It addresses a common benchmark problem in the field of computational fluid dynamics. There is no known exact solution, but experimental data have been published, making it possible to check the accuracy of the FEM solution. The model exemplifies a divergence-free ...

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