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All posts by Walter Frei

How to Create a Randomized Geometry Using Model Methods

June 5, 2017

What does cheese have to do with setting up a COMSOL Multiphysics® model? Here, we use the random holes in a piece of Swiss cheese to demonstrate creating randomized geometries with methods.

Modeling Natural and Forced Convection in COMSOL Multiphysics®

April 28, 2017

Get an overview of several approaches for modeling natural and forced convection in COMSOL Multiphysics®, starting with the simplest method and adding complexity from there.

How to Optimize the Spacing of Electromagnetic Coils

April 20, 2017

Did you know that you can maximize the magnetic field strength of your electromagnetic coil designs by optimizing the spacing between the coils?

3 Ways to Optimize the Current in Electromagnetic Coils

April 10, 2017

We give you 3 ways to optimize the current in electromagnetic coil designs using the AC/DC Module and Optimization Module, add-on products to COMSOL Multiphysics®.

How to Postprocess Fields over Arbitrary Geometries

April 4, 2017

Check out this useful modeling trick: You can query the results of your model within an arbitrary geometric subregion by implementing an integration during postprocessing.

How to Compute Distances Between Objects in COMSOL Multiphysics®

March 2, 2017

Compute the distance between two deforming objects in the COMSOL Multiphysics® software. Here’s how…

How to Model the Electromagnetic Heating of Underground Cables

February 14, 2017

Underground power cables are beneficial in many ways, but they are also subject to overheating. To design better cables, we can model their electromagnetic heating in COMSOL Multiphysics.

Part 2: Modeling the Harmonic Excitations of Nonlinear Systems

August 11, 2016

Extending our discussion on modeling the harmonic excitations of linear systems, we will now shift focus to nonlinear systems. We will look at problems where the loading on the system has some sinusoidal components as well as cases where the material properties or loads and constraints depend directly on the solution. As you will see, COMSOL Multiphysics can address these apparently nonlinear cases with some very efficient solution algorithms. Let’s find out how.