All posts by Walter Frei
How to Choose Between Boundary Conditions for Coil Modeling
3 approaches for truncating a domain when modeling an EM coil in free space: the Magnetic Insulation and Perfect Magnetic Conductor boundary conditions as well as the infinite element domain.
Modeling the Thermal Curing Process
Polymerization of a thermoset resin is one example of thermal curing, a process in which temperature-induced chemical change occurs in a material.
Using Radial Basis Functions for Surface Interpolation
Did you know that you can easily calculate the interpolation between a set of points using a simulation app? Learn more here and download a demo app for design inspiration.
Modeling Coils in the AC/DC Module
A key concept when it comes to coil modeling is closing the current loop. Learn how to do so when modeling coils using the AC/DC Module and COMSOL Multiphysics®.
Generate Models from Text Files with the Application Builder
Ever wish you could automate your model preprocessing tasks? In this blog post, we demonstrate how you can use the Application Builder to quickly convert a text input file into a COMSOL model.
Control Current and Voltage Sources with the AC/DC Module
Did you know that you can use the Terminal boundary condition to dynamically switch between excitation types during a transient simulation? This is useful for modeling power supply, for example.
Keeping Track of Element Order in Multiphysics Models
Whenever you are building a finite element model in COMSOL Multiphysics®, it is important that you are aware of the element order that is being used. We demonstrate how to do so here.
Study Radiofrequency Tissue Ablation Using Simulation
Killing cancerous cells, shrinking collagen, alleviating pain. These are just some of the medical purposes of radiofrequency tissue ablation, a procedure that relies on targeted heat.
Using the Application Builder to Create a Koch Snowflake
The Koch snowflake is a well-known fractal, notable due to its simple, iterative construction process. Learn how to easily build this shape with the Application Builder in COMSOL Multiphysics®.
Designing New Structures with Shape Optimization
Get a comprehensive background on using shape optimization to design new structures, with the example of a classical beam thickness problem.
Changing the Dimensions of a Model Using Shape Optimization
If your model has a single objective function to be improved, a set of geometric parameters to be changed, and a set of constraints, you can find the optimal structure without any remeshing.
Exploiting Periodicity in Models with High Péclet Numbers
In the study of chemical species transport, a high Péclet number means the ratio of advection to diffusion is very high. Learn how to exploit periodicity when modeling this type of problem.