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General Solutions

1257: Solving electromagnetic heating models with high-frequency loads

I 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...
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1250: Running parametric sweeps, batch sweeps, and cluster sweeps from...

This 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 modify...
Version: All versions - Platform: All Platforms

1249: Solution number is out of range

You compute a distributed parametric sweep on a cluster. When processing the results some values are missing or you get errors such as "The solution number is invalid" or "Solution number is out of range". This issue...
Version: 5.3a - Platform: All Platforms

1248: When changing the value in the Expression cell in my table, the...

I am running COMSOL Multiphysics on Windows, and when trying to change the value in the Expression cell in one of my tables, the value is not updated.This issue in the Expression cells of all tables where there is...
Version: 5.2a,5.3,5.3a - Platform: Windows

1243: Out of Memory

The 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...
Version: All versions - Platform: All Platforms

1238: Reducing the size of your COMSOL Multiphysics file

I would like to reduce the size of my COMSOL Multiphysics model file. There are several things that you can do to reduce the file size: First, COMSOL saves files in either a compressed or uncompressed state. You can...
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1232: Selecting entities by index number

I am following the step-by-step instructions for building an example COMSOL Application and the directions specify a numeric list of entities ( such as boundaries or domains ) to select. How do I find out which...
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1223: How to reference COMSOL Multiphysics® software in papers and...

I am a licensed user of COMSOL Multiphysics® software and am publishing an article, paper, book, image, or conference proceeding based upon my own modeling work. How should this be referenced? As a licensed user who...
Version: All versions - Platform: All Platforms

1222: Persistent Unexpected Errors when Running COMSOL on OSX 10.11 El...

When I run COMSOL on OSX 10.11, El Capitan, I get repeated Unexpected Errors. Add the line -XX:-OmitStackTraceInFastThrow to the file /Applications/COMSOL52/Multiphysics/bin/maci64/com​sol.ini If this does not...
Version: 5.1,5.2 - Platform: Macintosh

1216: The usage of Form Union and Form Assembly

There is an option to Form Union or Form Assembly at the end of the Geometry sequence. What does this mean and when should I switch between them? The Geometry branch within the Model Builder consists of a sequence of...
Version: All versions - Platform: All Platforms