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All posts by Walter Frei

Treating Time as a Space Dimension

July 26, 2024

In this blog post, explore a particularly important approach to solving the time-periodic steady state of a system that can be described by a set of algebraic equations.

Using Differential Inductance and Coils in COMSOL Multiphysics®

July 15, 2024

Differential inductances are useful for building simplified lumped models. Explore 4 examples of how to extract differential inductance in COMSOL Multiphysics® here.

Learning from the Two-Capacitor Paradox: Do Capacitance and Inductance Exist?

March 11, 2024

What is the two-capacitor paradox? How can it be resolved with modeling and simulation? Do capacitance and inductance exist? Get answers here.

Understanding Higher-Order Diffraction

January 9, 2024

Explore how to use the Ewald sphere to study diffraction from planar periodic structures. (Interact directly with the model to get the full picture!)

Modeling Dispersion in an Electric Currents Model

December 20, 2023

As of COMSOL Multiphysics® version 6.2, new electrical dispersion modeling capabilities are available. This functionality is especially important for modeling insulators and living tissues.

Modeling Periodic Electric Signals and Their Thermal Effects

August 22, 2023

Electrical pulse trains can be applied to human tissue for electroporation and thermal ablation. Learn how to model such signals via a Fourier transform approach.

Understanding the Transient Electromagnetic Excitation Options

August 17, 2023

Looking to model electrical signals that vary arbitrarily in time? We suggest using the Electric Currents interface. Learn why here.

Understanding the Excitation Options for Modeling Electric Currents

May 5, 2023

Learn about the capabilities of COMSOL Multiphysics® for modeling frequency-domain electric currents in this in-depth guide.


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