General
Thread placement on >64 logical cores on Windows
Solution Number: 1275 Versions: 5.5On Windows computers with more than 64 logical cores (e.g. with more than 32 physical cores and Hyperthreading enabled as recommended) thread placement for COMSOL Multiphysics or COMSOL Server can be inefficient. You ...
Unexpected error on startup of COMSOL pointing to "Could not load file or assembly 'cstextrenderer_wpf"
Solution Number: 1274 Applies to: COMSOL Multiphysics Versions: 5.6, 5.5After installing COMSOL Multiphysics, I receive an unexpected error when launching it. Looking in the log file, it points to an issue with cstextrenderer_wpf as per below 2020-01-08T13:52:42.170+01:00 Could not load ...
LiveLink for CAD Product Uninstalled After installing COMSOL Multiphysics 5.5 update 2
Solution Number: 1273 Applies to: LiveLink for AutoCAD, LiveLink for Inventor, LiveLink for PTC Creo Parametric, LiveLink for PTC Pro/ENGINEER, LiveLink for Revit, LiveLink for Solid Edge, LiveLink for SOLIDWORKS Versions: 5.5During the update of my COMSOL Multiphysics 5.5 installation to update 2 (build number 5.5.0.352), the LiveLink for CAD product is uninstalled, and after the update I can no longer find the COMSOL Multiphysics tab in ...
Setup and Meshing of Infinite Elements, Perfectly Matched Layers, and Absorbing Layers
Solution Number: 1272 Versions: All versionsI am setting up a model where I want to include a region of infinite extent. How should such situations be modeled and meshed? #Overview There are three options for modeling a domain that is meant to represent a ...
COMSOL crashes on startup after updating to Debian 10
Solution Number: 1266 Versions: 5.4After updating my Debian installation from Debian 9 to Debian 10, COMSOL crashes on startup. This issue has been observed by some Debian users when updating from Debian 9 to Debian 10. There are two possible solutions ...
How can I see the equations COMSOL is defining? How do I implement a user-defined Multiphysics coupling?
Solution Number: 1259 Versions: All versionsI would like to define my own customized coupling between two existing physics interfaces. How can I do this? How can I find the names of the variables that I will need to use? How can I see the names of all ...
Solving electromagnetic heating models with high-frequency loads
Solution Number: 1257 Versions: All versionsI am solving a Multiphysics problem involving electromagnetics and heat transfer. The electromagnetic fields are varying at a constant frequency, and the period is very short compared to the timespan over which the ...
Reducing the amount of solution data stored in a model
Solution Number: 1255 Versions: All versionsMy models contain a lot of solution data, and I do not want my file sizes to get too large, it takes a lot of disk space. What can I do to reduce file size? Will this reduce the time it takes to solve the model? File ...
Running parametric sweeps, batch sweeps, and cluster sweeps from the command line
Solution Number: 1250 Versions: All versionsThis solution describes how to launch a parametric sweep, a batch sweep, or a cluster sweep simulation in COMSOL Multiphysics® from the command line. ## Short Summary Model methods are presented as a concept to ...
Out of Memory
Solution Number: 1243 Versions: All versionsThe error "Out of Memory" occurs. Of the available memory (RAM and virtual memory), one section, the Java heap, is reserved for Java. The rest of the memory will be available for meshing and solving. If you receive the ...