All posts by Walter Frei
How to Compute the Projected Area of a CAD File in COMSOL®
Learn about three approaches to computing the projected area of a CAD file and when to use each one.
How Long Does It Take an Engineer to Turn on a Light Bulb?
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®
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
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?
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®
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
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
Interested in modeling photonic waveguiding structures? Learn some efficient techniques for devices with multiple supported waveguide modes and identical waveguide cross sections.
Combining Adaptive Mesh Refinement with Data Filtering
In a follow-up to our previous blog post on data filtering, we demonstrate how to implement adaptive mesh refinement and a Helmholtz filter for a thermal model with a nonuniform heat load.
Using Data Filtering to Improve Model Performance
Want to include experimental data in your model as a load or boundary condition, but the data varies over space or time and is noisy? Try implementing data filtering, such as a Helmholtz filter.
How to Model a Hall Effect Sensor with COMSOL Multiphysics®
Basic working principle of a Hall effect sensor: A nearby magnetic field deflects the path of current through a semiconductive sensor, which causes a measurable change in potential.
Using Global Equations to Introduce Fully Coupled Goal Seeking
Learn how to introduce a goal-seeking equation, combined with a fully coupled approach, to solve a nonlinear model. (Follow-up to an earlier blog post on goal seeking with a segregated solver.)