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All posts by Walter Frei

How to Compute the Projected Area of a CAD File in COMSOL®

January 20, 2022

Want to compute the projected area of a CAD file? We discuss three simple approaches for doing so here.

How Long Does It Take an Engineer to Turn on a Light Bulb?

January 5, 2022

Misconception about electricity: Electrons carry the energy in an electrical circuit. Today, we investigate this theory with simulation.

Wrapping and Warping Geometries for Analysis in COMSOL®

September 10, 2021

CAD parts are typically designed in an undeformed, as-manufactured state. When it comes to analysis, however, we are only interested in the deformed, as-assembled state.

Voltage and Ground When Modeling Wave-Like EM Fields

June 17, 2021

We continue our discussion of voltage and ground by defining and interpreting these terms for sinusoidally time-varying electromagnetics models.

Do Voltage and Ground Exist?

June 15, 2021

Remember how the terms “voltage” and “ground” were taught in your university electrical engineering classes? Get a precise definition (in terms of modeling computational EM problems) here.

How to Compute Residence Time in Flow Models with COMSOL®

June 1, 2021

You can compute residence time in flow problems using the Particle Tracing Module. Get the details in this blog post.

Efficient Meshing Strategies for 3D Inductive Heating Models

May 11, 2021

Interested in some efficient meshing strategies for 3D inductive heating models? In this blog post, we demonstrate how to partition a mesh based upon the element type.

How to Model Polarization Rotation Along a Waveguide

April 29, 2021

Interested in modeling photonic waveguiding structures? Learn some efficient techniques for devices with multiple supported waveguide modes and identical waveguide cross sections.


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