All posts by Walter Frei
Ports and Lumped Ports for Wave Electromagnetics Problems
The Lumped Port boundary condition can be used to model boundaries through which a propagating electromagnetic wave will pass without reflection. Learn how to use this feature in your EM models.
Implementing a Thermostat with the Events Interface
Hot or cold? You can use the Events interface in COMSOL Multiphysics® to implement a basic on-off thermostat in your model for controlling a heat load. Get a demonstration of how to do so here.
Modeling a Periodic Heat Load
Interested in modeling periodic, or pulsed, heat loads? Modeling such a situation accurately and efficiently in COMSOL Multiphysics® is simple with the Events interface. Learn more…
Using Perfectly Matched Layers and Scattering Boundary Conditions for Wave Electromagnetics Problems
Learn how to use scattering boundary conditions and perfectly matched layers to truncate domains for your wave electromagnetics problem — and which technique is best for your modeling scenario.
Using General Extrusion Operators to Model Rotation
You can use the General Extrusion operators in COMSOL Multiphysics® to simulate rotating objects exposed to loads. A common real-world example of this is rotisserie-style foods.
Analyzing Capacitive Touchscreens in Consumer Electronics
Most of us use multiple touchscreen devices throughout the day, from our smartphones to the ATM. Learn how to use electromagnetics modeling to study capacitive effects in these devices.
Using Virtual Operations to Simplify Your Geometry
CAD geometry: A set of data structures that provide a very precise method for describing the shapes of parts (called boundary representation, or B-rep).
Introducing the Ray Optics Module
COMSOL Multiphysics version 5.0 introduced an add-on module for electromagnetics modeling: the Ray Optics Module. It can be used to perform ray tracing and geometrical optics studies.