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1240: Manually Setting the Scaling of Variables

Transient problems often begin with all fields at an initial value of zero. During the solution the fields may increase by a great deal, or only very slightly. The default behavior of the software is to assume a...
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1239: Two-Phase Flow Modeling Guidelines

My model includes Two-Phase Flow, Level Set or the Two-Phase Flow, Phase Field interface and it is either not converging, taking a very long time to solve, or not converging to a reasonable result. This article...
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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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1236: Problems launching COMSOL Server™ 5.3 with MATLAB®

In Windows®: I have a COMSOL Server™ License with LiveLink™ for MATLAB®. When attempting to launch LiveLink™ for MATLAB® using the desktop icon COMSOL Server 5.3 with MATLAB, COMSOL Server™ starts listening...
Version: 5.3 - Platform:

1235: Issues after updating COMSOL Multiphysics 5.3

After installing an update for COMSOL Multiphysics 5.3 I have one of the following issues When launching COMSOL Multiphysics, I get an Unexpected Error or a message that the client and server versions do not match. I...
Version: 5.3 - Platform: All Platforms

1234: An error is returned when running mphlaunch and mphstart

If the COMSOL installation path contains a space, an error is returned when running the functions mphstart and mphlaunch at the MATLAB prompt. The error returned when running mphlaunch is: 'C:\Program' is not...
Version: 5.3 - Platform: All Platforms

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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1231: Error: "Internal error CAD import" when importing SOLIDWORKS or...

On a computer with Chinese Windows, import of SOLIDWORKS and CATIA V5 files in COMSOL Multiphysics 5.2a always fails with the message "Internal error CAD import". Contact COMSOL Support to get access to the hotfix that...
Version: 5.2a - Platform: Windows

1229: Installing COMSOL on macOS Sierra

I am trying to install COMSOL Multiphysics on my Mac running macOS Sierra (version 10.12), but the Setup program does not start. This has been fixed in COMSOL 5.2a update 2. Please use the latest installer available...
Version: 5.2,5.2a - Platform: Macintosh

1228: Vendorstring is not correct

When using the COMSOL 5.2a license file, I receive the error "Vendorstring is not correct" when starting COMSOL version 5.2 or earlier. COMSOL 5.2a works fine. What is the problem? For licenses that use a license...
Version: All versions - Platform: All Platforms