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COMSOL® SOFTWARE VERSION 6.2 UPDATE 2

Released January 24, 2024

The COMSOL® software version 6.2 update 2 (build 6.2.0.339) provides performance and stability improvements to COMSOL Multiphysics®, COMSOL Server™, and COMSOL Client.

The update applies to COMSOL® software version 6.2 (build: 6.2.0.278 and 6.2.0.290). The update is cumulative (that is, it includes the performance and stability improvements in version 6.2 update 1) and can be applied directly to an installation of version 6.2 or 6.2 update 1.

Terms and Conditions

This update is governed by the COMSOL Software License Agreement that is displayed upon installation of COMSOL Multiphysics® or by the terms and conditions of any other agreement COMSOL may have with your organization. For the latest version of the COMSOL Software License Agreement, including any provisions applicable to this update, see the License Agreements page. By downloading and using this update, you agree to use this update in accordance with the current version of the COMSOL Software License Agreement or with the terms and conditions of any other agreement we may have with your organization.

Note: Update 1 and 2 to version 6.2 of the COMSOL® software did not introduce any changes to the COMSOL Software License Agreement.

How to Apply the Software Update

Before proceeding with your installation, make sure that you close and exit any running COMSOL® processes or any software you have running that correlates to a LiveLink™ product you would like to update (Excel®, MATLAB®, Simulink®, or a CAD software program).

Updating COMSOL Multiphysics®

The easiest way to install the update for COMSOL Multiphysics® is to start the program and then select Check for Product Updates. If using the Windows® operating system, this option is located in the File menu under Help. If using the Linux® operating system or macOS, this option is located in the Help menu.

For more information on how to install the update and for offline installation instructions, see the Additional Instructions tab below.

To check that the update installation was successful, first start the COMSOL Multiphysics® software and then select the About COMSOL Multiphysics menu option. If using the Windows® operating system, this option is located in the File menu under Help. If using the Linux® operating system or macOS, this option is located in the Help menu. The listed version should be COMSOL Multiphysics® 6.2 (build 339).

Updating COMSOL Server™

To update COMSOL Server™ if using the Windows® operating system, run the Update program from the COMSOL Launchers folder in the Startmenu. Note that the COMSOL Server™ service process needs to be stopped before applying the update.

For more information on how to install the update, installing on other operating systems, and offline installation, see the Additional Instructions tab below.

To check that the installation was successful, first make sure that COMSOL Server™ is running; then, navigate to COMSOL Server™ in a web browser and follow the About COMSOL Server™ link in the lower-right corner. The new version should be COMSOL Server™ 6.2 (build 339).

Updating COMSOL Client for Use with COMSOL Server™

To update COMSOL Client for the Windows® operating system, download the new version from Client Download and install. The previous 6.2 installation will be overwritten. In order to run properly, your installation of COMSOL Client must have the same version number as the COMSOL Server™ installation that you connect to.

The following instructions apply only if you are not using the method based on the Check for Product Updates menu item, as described above.

Updating COMSOL Multiphysics®

1

Check the Version Number

  1. Start COMSOL Multiphysics®.
  2. Open the About COMSOL Multiphysics dialog box. If using the Windows® operating system, the dialog box can be found in the File menu under Help. If using either the Linux® operating system or macOS, the dialog box can be found under the Help menu.
  3. Check that the version number is 6.2 (build 6.2.0.278 or 6.2.0.290). This corresponds to the version that has not yet been updated.
2

Install the Update

Before you proceed with the installation, make sure to exit any running COMSOL Multiphysics® processes or any software you have running that correlates to a LiveLink™ product you would like to update (Excel®, PowerPoint®, MATLAB®, or a CAD software).

  1. Start the COMSOL® software update installer:
    • Windows® operating systems: Run the Update program from the COMSOL Launchers folder in the Start menu, or directly from the COMSOL 6.2 installation folder. The COMSOL Launchers folder can be found in the installation folder, for example, C:\Program Files\COMSOL\COMSOL62\Multiphysics\COMSOL Launchers.
    • Linux® operating systems: Run the update script from the COMSOL 6.2 installation directory, for example, /usr/local/comsol62/multiphysics.
    • macOS: Run the COMSOL Update application from the COMSOL 6.2 installation directory, for example, /Applications/COMSOL62/Multiphysics.
  2. The next step will be taken in the installer program's Options page and depends on whether or not you have a live internet connection or if you plan to download the update file for offline installation:
    • If you have an internet connection: Keep the Direct download setting.
    • If you have an internet connection via a proxy server: Select Download via proxy server and enter your proxy configuration settings.
    • If you do not have an internet connection on the target computer or if you want to apply the update several times on multiple computers: Download the following file to a folder on your computer
      DOWNLOAD UPDATE (2052 MB)
      In the installer program, select Manual download and click Browse. Navigate to the downloaded file and click Open.
  3. Click Next to get to the Release Notes page for reviewing the update details.
  4. Click Next to get to the Install page and review the software components affected by the update.
  5. In the Install page, click Install to start the installation of the update.
3

Check the Installation

  1. Start COMSOL Multiphysics®.
  2. Open the About COMSOL Multiphysics dialog box. If using the Windows® operating system, this is located in the File menu under Help. If using the Linux® operating system or macOS, this is located in the Help menu.
  3. Check that the version number is 6.2.0.339. (If not, the installation did not succeed.)

Updating COMSOL Server™

1

Check the Version Number

  1. Navigate to the running version of COMSOL Server™ in a web browser.
  2. Click the About COMSOL Server link in the lower-right corner.
  3. Check that the version number is 6.2 (build 6.2.0.278 or 6.2.0.290). This corresponds to the version that has not yet been updated.
2

Stop the COMSOL Server™ Processes

Before you proceed with the installation, make sure to stop any running COMSOL Server™ processes.

  1. In Windows®: Stop the server by either typing close, if COMSOL Server™ is running in a command window, or by running the Stop COMSOL Server shortcut from the COMSOL Launchers folder in the start menu, if COMSOL Server™ is installed as a Windows® service.
  2. In Linux®: If you configured COMSOL Server™ using the systemd service, stop it by typing systemctl stop comsolserver62; otherwise, kill the COMSOL Server™ process.
  3. In macOS: Kill the COMSOL Server™ process.
3

Install the Update

Before you proceed with the installation, make sure to stop any running COMSOL Server™ processes, as described above.

  1. Start the COMSOL® software update installer:
    • Windows® operating systems: Run the Update program from the COMSOL Launchers folder in the Start menu, or directly from the COMSOL 6.2 installation folder. The COMSOL Launchers folder can be found in the installation folder, for example, C:\Program Files\COMSOL\COMSOL62\Server\COMSOL Launchers.
    • Linux® operating systems: Run the update script from the COMSOL 6.2 installation directory, for example, /usr/local/comsol62/server.
    • macOS: Run the COMSOL Update application from the COMSOL 6.2 installation directory, for example, /Applications/COMSOL62/Server.
  2. The next step will be taken in the installer program's Options page and depends on whether or not you have a live internet connection or if you plan to download the update file for offline installation:
    • If you have an internet connection: Keep the Direct download setting.
    • If you have an internet connection via a proxy server: Select Download via proxy server and enter your proxy configuration settings.
    • If you do not have an internet connection on the target computer or if you want to apply the update several times on multiple computers: Download the following file to a folder on your computer
      DOWNLOAD UPDATE (2052 MB)
      In the installer program, select Manual download and click Browse. Navigate to the downloaded file and click Open.
  3. Click Next to get to the Release Notes page for reviewing the update details.
  4. Click Next to get to the Install page and review the software components affected by the update.
  5. In the Install page, click Install to start the installation of the update.
4

Start COMSOL Server™ Again

  • In Windows®: Start COMSOL Server™ by using the COMSOL Server shortcut in the start menu. Alternatively, if COMSOL Server™ was installed as a Windows® service, start it by using the Start COMSOL Server shortcut.
  • In Linux®: If you configured COMSOL Server™ using the systemd service, start it by typing systemctl start comsolserver62; otherwise, type <installation directory>/bin/comsol server to start COMSOL Server™.
  • In macOS: Type <installation directory>/bin/comsol server to start COMSOL Server™.
5

Check the Installation

  1. Navigate to the running version of COMSOL Server™ in a web browser.
  2. Click the About COMSOL Server link in the lower-right corner
  3. Check that the version number is 6.2.0.339. (If not, the installation did not succeed.)

Updating Model Manager Server

1

Check the Version Number

  1. Navigate to the running version of Model Manager server in a web browser.
  2. Click the About link in the center of the footer.
  3. Check that the version number is 6.2 (build 6.2.0.278 or 6.2.0.290). This corresponds to the version that has not yet been updated.
2

Stop the Model Manager Server Processes

Before you proceed with the installation, make sure to stop any running Model Manager server processes.

  1. In Windows®: Stop the server by either typing Ctrl+C, if Model Manager server is running in a command window or by running the Stop Model Manager Server shortcut from the COMSOL Launchers folder in the start menu, if Model Manager server is installed as a Windows® service.
  2. In Linux®: If you configured Model Manager server using the systemd service, stop it by typing systemctl stop comsolmodelmanagerserver62; otherwise, kill the Model Manager server process.
  3. In macOS: Kill the Model Manager server process.
3

Install the Update

Before you proceed with the installation, make sure to stop any running Model Manager server processes, as described above.

  1. Start the COMSOL® software update installer:
    • Windows® operating systems: Run the Update program from the COMSOL Launchers folder in the Start menu, or directly from the COMSOL 6.2 installation folder. The COMSOL Launchers folder can be found in the installation folder, for example, C:\Program Files\COMSOL\COMSOL62\ModelManagerServer\COMSOL Launchers.
    • Linux® operating systems: Run the update script from the COMSOL 6.2 installation directory, for example, /usr/local/comsol62/ModelManagerServer.
    • macOS: Run the COMSOL Update application from the COMSOL 6.2 installation directory, for example, /Applications/COMSOL62/ModelManagerServer.
  2. The next step will be taken in the installer program's Options page and depends on whether or not you have a live internet connection or if you plan to download the update file for offline installation:
    • If you have an internet connection: Keep the Direct download setting.
    • If you have an internet connection via a proxy server: Select Download via proxy server and enter your proxy configuration settings.
    • If you do not have an internet connection on the target computer or if you want to apply the update several times on multiple computers: Download the following file to a folder on your computer
      DOWNLOAD UPDATE (117 MB)
      In the installer program, select Manual download and click Browse. Navigate to the downloaded file and click Open.
  3. Click Next to get to the Release Notes page for reviewing the update details.
  4. Click Next to get to the Install page and review the software components affected by the update.
  5. In the Install page, click Install to start the installation of the update.
4

Start Model Manager Server Again

  • In Windows®: Start Start Model Manager server by using the Model Manager Server shortcut in the start menu. Alternatively, if Model Manager server was installed as a Windows® service, start it by using the Start Model Manager Server shortcut.
  • In Linux®: If you configured Model Manager server using the systemd service, start it by typing systemctl start comsolmodelmanagerserver62; otherwise, type <installation directory>/bin/comsol modelmanagerserver to start Model Manager server.
  • In macOS: Type <installation directory>/bin/comsol modelmanagerserver to start Model Manager server.
5

Check the Installation

  1. Navigate to the running version of Model Manager server in a web browser.
  2. Click the About link in the center of the footer.
  3. Check that the version number is 6.2.0.339. (If not, the installation did not succeed.)

Setting up Automated Installation of the Update

If you do not have access to the graphical user interface of your operating system or if you want to automate the update process, you can follow the steps below.

Automated Update of COMSOL Multiphysics®

1

Check the Version Number

  1. Start COMSOL Multiphysics®.
  2. Open the About COMSOL Multiphysics dialog box. If using the Windows® operating system, the dialog box can be found in the File menu under Help. If using either the Linux® operating system or macOS, the dialog box can be found under the Help menu.
  3. Check that the version number is 6.2 (build 6.2.0.278 or 6.2.0.290). This corresponds to the version that has not yet been updated.
2

Download the Update File

Click the button below to download the update. In some browsers, such as the Internet Explorer® browser, a dialog box will then open where you can click Save directly after the download has occurred.

DOWNLOAD UPDATE (2052 MB)

3

Installation

Before you proceed with the installation, make sure you have closed any COMSOL sessions or stopped any running COMSOL processes or any software you have running that correlates to a LiveLink™ product you would like to update (Excel®, MATLAB®, or a CAD software).

Windows® Operating Systems

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = C:\Program Files\COMSOL\COMSOL62\Multiphysics
    installmode = update
    update.filepath = C:\Users\username\Downloads\comsol_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Run cmd. Start the setup program (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: C:\Program Files\COMSOL\COMSOL62\Multiphysics\setup.exe -s C:\Users\username\setupconfig.ini

Linux® Operating Systems

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = /usr/local/comsol62/multiphysics
    installmode = update
    update.filepath = /home/username/Downloads/comsol_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Start the setup script (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: /usr/local/comsol62/multiphysics/setup -s /home/username/setupconfig.ini

macOS

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = /Applications/COMSOL62/Multiphysics
    installmode = update
    update.filepath = /home/username/Downloads/comsol_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Start the setup script (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: /Applications/COMSOL62/Multiphysics/setup -s /home/username/setupconfig.ini

4

Check the Installation

  1. Start COMSOL Multiphysics®.
  2. Open the About COMSOL Multiphysics dialog box. If using the Windows® operating system, this is located in the File menu under Help. If using the Linux® operating system or macOS, this is located in the Help menu.
  3. Check that the version number is 6.2.0.339. (If not, the installation did not succeed.)

Automated Update of COMSOL Server™

1

Check the Version Number

  1. Navigate to the running version of COMSOL Server™ in a web browser.
  2. Click the About COMSOL Server link in the lower-right corner.
  3. Check that the version number is 6.2 (build 6.2.0.278 or 6.2.0.290). This corresponds to the version that has not yet been updated.
2

Stop the COMSOL Server™ Processes

Before you proceed with the installation, make sure to stop any running COMSOL Server™ processes.

  1. In Windows®: Stop the server by either typing close, if COMSOL Server™ is running in a command window, or by running the Stop COMSOL Server shortcut from the COMSOL Launchers folder in the start menu, if COMSOL Server™ is installed as a Windows® service.
  2. In Linux®: If you configured COMSOL Server™ using the systemd service, stop it by typing systemctl stop comsolserver62; otherwise, kill the COMSOL Server™ process.
  3. In macOS: Kill the COMSOL Server™ process.
3

Download the Update File

Click the button below to download the update. In some browsers, such as the Internet Explorer® browser, a dialog box will then open where you can click Save directly after the download has occurred.

DOWNLOAD UPDATE (2052 MB)

4

Installation

Before you proceed with the installation, make sure you have closed any COMSOL sessions or stopped any running COMSOL processes or any software you have running that correlates to a LiveLink™ product you would like to update (Excel®, MATLAB®, or a CAD software).

Windows® Operating Systems

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = C:\Program Files\COMSOL\COMSOL62\Server
    installmode = update
    update.filepath = C:\Users\username\Downloads\comsol_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Run cmd. Start the setup program (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: C:\Program Files\COMSOL\COMSOL62\Server\setup.exe -s C:\Users\username\setupconfig.ini

Linux® Operating Systems

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = /usr/local/comsol62/server
    installmode = update
    update.filepath = /home/username/Downloads/comsol_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Start the setup script (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: /usr/local/comsol62/server/setup -s /home/username/setupconfig.ini

macOS

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = /Applications/COMSOL62/Server
    installmode = update
    update.filepath = /home/username/Downloads/comsol_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Start the setup script (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: /Applications/COMSOL62/Server/setup -s /home/username/setupconfig.ini

5

Start COMSOL Server™ Again

  • In Windows®: Start COMSOL Server™ by using the COMSOL Server shortcut in the start menu. Alternatively, if COMSOL Server™ was installed as a Windows® service, start it by using the Start COMSOL Server shortcut.
  • In Linux®: If you configured COMSOL Server™ using the systemd service, start it by typing systemctl start comsolserver62; otherwise, type <installation directory>/bin/comsol server to start COMSOL Server™.
  • In macOS: Type <installation directory>/bin/comsol server to start COMSOL Server™.
6

Check the Installation

  1. Navigate to the running version of COMSOL Server™ in a web browser.
  2. Click the About COMSOL Server link in the lower-right corner
  3. Check that the version number is 6.2.0.339. (If not, the installation did not succeed.)

Automated Update of the Model Manager Server

1

Check the Version Number

  1. Navigate to the running version of Model Manager server in a web browser.
  2. Click the About link in the center of the footer.
  3. Check that the version number is 6.2 (build 6.2.0.278 or 6.2.0.290). This corresponds to the version that has not yet been updated.
2

Stop the Model Manager Server Processes

Before you proceed with the installation, make sure to stop any running Model Manager server processes.

  1. In Windows®: Stop the server by either typing Ctrl+C, if Model Manager server is running in a command window or by running the Stop Model Manager Server shortcut from the COMSOL Launchers folder in the start menu, if Model Manager server is installed as a Windows® service.
  2. In Linux®: If you configured Model Manager server using the systemd service, stop it by typing systemctl stop comsolmodelmanagerserver62; otherwise, kill the Model Manager server process.
  3. In macOS: Kill the Model Manager server process.
3

Download the Update File

Click the button below to download the update. In some browsers, such as the Internet Explorer® browser, a dialog box will then open where you can click Save directly after the download has occurred.

DOWNLOAD UPDATE (117 MB)

4

Installation

Before you proceed with the installation, make sure you have closed any COMSOL sessions or stopped any running COMSOL processes or any software you have running that correlates to a LiveLink™ product you would like to update (Excel®, MATLAB®, or a CAD software).

Windows® Operating Systems

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = C:\Program Files\COMSOL\COMSOL62\ModelManagerServer
    installmode = update
    update.filepath = C:\Users\username\Downloads\comsol_dbserver_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Run cmd. Start the setup program (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: C:\Program Files\COMSOL\COMSOL62\ModelManagerServer\setup.exe -s C:\Users\username\setupconfig.ini

Linux® Operating Systems

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = /usr/local/comsol62/modelmanagerserver
    installmode = update
    update.filepath = /home/username/Downloads/comsol_dbserver_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Start the setup script (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: /usr/local/comsol62/modelmanagerserver/setup -s /home/username/setupconfig.ini

macOS

  1. Create a file named setupconfig.ini in your home directory, or anywhere else you have write permission.

  2. Copy the following lines to setupconfig.ini
    installdir = /Applications/COMSOL62/ModelManagerServer
    installmode = update
    update.filepath = /home/username/Downloads/comsol_dbserver_6.2.0.339_update.dat

  3. Change installdir path to the target COMSOL installation. Change update.filepath to the path where the manual update file is located.

  4. Start the setup script (located in the COMSOL install directory) with the flag -s and the path to your setupconfig.ini file. Example: /Applications/COMSOL62/modelmanagerserver/setup -s /home/username/setupconfig.ini

5

Start Model Manager Server Again

  • In Windows®: Start Model Manager server by using the Model Manager server shortcut in the start menu. Alternatively, if Model Manager server was installed as a Windows® service, start it by using the Start Model Manager server shortcut.
  • In Linux®: If you configured Model Manager server using the systemd service, start it by typing systemctl start comsolmodelmanagerserver62; otherwise, type <installation directory>/bin/comsol modelmanagerserver to start Model Manager server.
  • In macOS: Type <installation directory>/bin/comsol modelmanagerserver to start Model Manager server.
6

Check the Installation

  1. Navigate to the running version of Model Manager server in a web browser.
  2. Click the About link in the center of the footer.
  3. Check that the version number is 6.2.0.339. (If not, the installation did not succeed.)
Linux is a registered trademark of Linus Torvalds in the U.S. and other countries. macOS is a trademark of Apple Inc., registered in the U.S. and other countries. Microsoft, Internet Explorer, Excel, PowerPoint, and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. MATLAB and Simulink are registered trademarks of The MathWorks, Inc.

All COMSOL® software products undergo performance and stability improvements that are introduced as updates. The following list contains the most important improvements in COMSOL® version 6.2 update 2 (and update 1).

COMSOL Multiphysics®

  • The rendering of shadows has been improved.2
  • Support for Apple M3, M3 Pro, and M3 Max has been added.2
  • Changed the default BLAS library for Macs with Apple silicon to ArmPL for improved performance.2
  • Improved performance in some cases when running COMSOL® with the -blas aocl option.2
  • The Boundary Layers operation has been improved, primarily with respect to performance, which means that meshes with boundary layer elements may look slightly different than in previous versions.2
  • Much faster processing of models that include many identical boundaries on a complex geometry and use periodic conditions, identical mesh, or boundary similarity couplings, particularly if used in combination with mesh control entities.2
  • When using an external SQL Server database with a Model Manager server in 6.2, the default is to make an encrypted connection using TLS. This can cause the connection to fail if the certificate of the SQL Server is not trusted by the Model Manager server runtime. It is now possible to work around this with the new settings for the SQL Server connection in the Model Manager server database configuration, which allow you to either disable the TLS encryption or opt to trust the certificate.2
  • Fixes a potential out-of-memory error that may occur when saving a model containing, in terms of disk space usage, large computed data to a Model Manager server database.2
  • For modal reduced-order models, the damping-ratio matrix is now consistently updated to reflect the chosen modal damping.2
  • Two new formatting modes for adding mathematical expressions to plot titles have been added: the display and inline math modes.2
    • To use the LaTeX display math mode, put \[ \] around the LaTeX mathematical expression in the Title field. This mode uses more vertical space for the math expression.
    • To use the LaTeX inline math mode, put \$ \$ around the LaTeX mathematical expression in the Title field. This mode is meant to be used inline in the text (in standard LaTeX) and has a more compact presentation.
  • A bug in the visualization of work planes has been fixed.2
  • Improved shadows of point lights.2
  • Changed the default visualization material in plots. This makes 3D plots appear more similar to those in version 6.1.2
  • The Graphics window is now updated immediately when the legend position is changed in a plot group.2
  • The handling of singular geometries in the array datasets has been improved.2
  • The directivity plot now ignores duplicate frequencies.2
  • The VTK export now runs faster.2
  • Reduced the time it takes to launch the help system.2
  • Fixed a bug that prevented the help system from working for IPv6.2
  • Fixed an issue where copying some features between components created a model history as Java® code that did not run.2
  • Documentation has been added for the Random Flat Surface geometry part, and the implementation has been improved.2
  • Security improvements.2
  • Performance improvements.2
  • Stability improvements.1,2
  • Fixed a license handling issue when hosting multiple licenses on a single license server.1

Application Builder

  • Fixed a memory leak in the Test Application feature.2
  • The font of tab headers is now preserved when hiding and showing tabs in a form collection in apps.2
  • Stability improvements.2

AC/DC Module

  • Unit support is extended to include the kiloOersted (kOe).2
  • An issue affecting models created in earlier versions of COMSOL Multiphysics® using the Lorentz Coupling feature, when opened in version 6.2, has been corrected.2
  • Stability improvements.2

Acoustics Module

  • For models using the Pressure Acoustics, Transient interface, the Interior Sound Hard Boundary (Wall) feature is now treated consistently inside the Perfectly Matched Layer domain.2
  • Handling of nonorthogonal modes by the Port condition in the Pressure Acoustics, Frequency Domain interface has been added. Nonorthogonal modes may be present if the boundaries of the studied waveguide have impedance boundary conditions.2"
  • For poroelastic waves, although the finite element solution was correct, the poroelastic wave speed variables were evaluated incorrectly. This affected the fast or slow pressure wave as well as the porous shear wave, and the problem occurred only for the Shear modulus and Poisson's ratio material input option. This problem has now been fixed. Note the that the corrected variable evaluation can have an influence on meshing, where the slowest wave needs to be resolved adequately.2
  • The poroelastic wave speeds, for the fast and slow pressure waves and the shear wave, are now defined for results analysis in the Anisotropic Poroelastic Material model.2
  • Stability improvements.2

Battery Design Module

  • Stability improvements.2

CAD Import Module

  • Support has been added for importing ACIS® 2024 1.0 and SOLIDWORKS® 2024 files on Windows®.2
  • Restored functionality for importing files saved with educational versions of SOLIDWORKS®.2
  • In previous versions, edges were approximated when meshing, giving an approximation error that could not be decreased by refining the mesh. This issue was fixed for the COMSOL kernel in version 6.2. In version 6.2 update 2, it has also been fixed for the CAD kernel. This is important if high accuracy in the surface normal is required, for example, in ray optics.2
  • Stability improvements.2

CFD Module

  • Explanatory sketches have been added in the Mixing Plane feature for 3D models.2
  • Stability improvements.2

Chemical Reaction Engineering Module

  • Stabilization has been updated to account for the contribution from the Out-of-Plane Flux feature.2
  • The unit of molar mass constants created by a Thermodynamic System has been corrected. When using these constants directly, the numerical value previously corresponded to that of g/mol, but the unit shown was kg/mol. Note that the molar mass variables created automatically by the Reaction Engineering interface and the Chemistry interface were correct.2
  • Stability improvements.2

Composite Materials Module

  • Stability improvements.2

Corrosion Module

  • Stability improvements.2

File Import for CATIA® V5

  • Support has been added for importing CATIA® V5 2024 files on Windows®.2

Fuel Cell And Electrolyzer Module

  • Stability improvements.2

Heat Transfer Module

  • Improved accuracy in the Moisture Transport interfaces when using convective terms under conservative form.2
  • The accuracy of the viscous dissipation contribution in the High viscous dissipation at wall thermal wall function has been improved.2
  • In the scope of porous media under the local thermal nonequilibrium assumption, the viscous dissipation contribution added by the Nonisothermal Flow multiphysics coupling and the Viscous Dissipation subfeature has been corrected.2
  • The total work source term has been added to the predefined Energy Balance global evaluation group, and the total accumulated heat rate term has been replaced by the total accumulated energy rate.2
  • When using the Discrete Ordinates Method feature for 2D models, the discrete ordinates are no longer projected on the xy-plane. When using expressions depending on the third coordinate of the discrete directions in features supporting ordinates substitution (e.g., Initial Values or Incident Intensity), the results will now be closer to the equivalent 3D model.2
    • This change also modifies the scattering term in 2D when the Scattering type is set to Polynomial anisotropic or Henyey–Greenstein; it will now be closer to the equivalent 3D model. This will not affect the results of models using the Isotropic or Linear Anisotropic Scattering type.
  • Stability improvements.2

LiveLink™ for Inventor®

  • Stability improvements.2

LiveLink™ for MATLAB®

  • The mphmean function now has the properties intsurface and intvolume, which can be useful for axisymmetric models.2
  • Stability improvements.2
  • Fixed a "Failed to load library: libcsmumps.dylib" error, which occurred when trying to solve a model in cases where LiveLink™ for MATLAB® had been installed on macOS with Apple silicon processors.1

LiveLink™ for Simulink®

  • Stability improvements.2
  • Fixed an "Error in supplied FMU: Unable to load dynamic library" error, which occured when running a simulation in Simulink® using LiveLink™ for Simulink® on macOS with Apple silicon processors. To run a cosimulation after installing the update on a macOS platform with Apple silicon processor, open the model MPH file and, from the Cosimulation for Simulink feature node, export a new cosimulation file (FMU file). The exported cosimulation file is only compatible with Simulink® on macOS with Apple silicon processors. This instruction also applies to the tutorial model files found in the Application Library distributed with COMSOL Multiphysics®.1

LiveLink™ for Solid Edge®

  • Stability improvements.2

MEMS Module

  • Stability improvements.2

Metal Processing Module

  • Stability improvements.2

Mixer Module

  • Improved physics-controlled mesh for the Rotating Shaft feature.2
  • Performance improvements.2

Nonlinear Structural Mechanics Module

  • Stability improvements.2

Optimization Module

  • Removed hard-coded iteration limit for the interior point optimizer (IPOPT) and sparse nonlinear optimizer (SNOPT) solvers.2
  • When defining least-squares objective functions via a table in the Settings window for a Least-Squares Objective feature, units added to the Unit input for the Value column are now handled correctly.2
  • Stability improvements.2

Pipe Flow Module

  • Stability improvements.2

Porous Media Flow Module

  • Stability improvements.2

RF Module

  • Stability improvements.2

Semiconductor Module

  • An absorption coefficient is now available for the Indirect Optical Transitions feature.2

Structural Mechanics Module

  • For the Plate physics interface, the following three features can now prescribe the acceleration in the z direction: Gravity, Base Excitation, and Linearly Accelerated Frame.2
    • For the Gravity feature, the new default value is "-gconst" in the z direction and zero in the other two directions. If you perform modeling using the Java® API and your model requires Gravity with a nonzero component in the y direction only (the default value in previous versions), you need to modify the code at the place where the feature is added. The resulting code will be similar to: model.component("comp1").physics("plate").create("gacc1", "GravityAcceleration", -1); model.component("comp1").physics("plate").feature("gacc1").set("g", new String[] {"0", "-gconst", "0"});.
  • For the Test Material node in the Solid Mechanics interface, two corrections have been made in the interpretation of the Pressure function input in the force-driven user-defined isotropic test. The input is now interpreted as true pressure (force per current area), with positive values corresponding to compression.2
  • The mass contribution of fibers modeled with the Fiber node are now correctly included for all study types.2
  • Stability improvements.2

Uncertainty Quantification Module

  • Stability improvements.2

Wave Optics Module

  • Stability improvements.2

1 New in update 1 (build 6.2.0.290, released on Nov. 16, 2023)

2 New in update 2 (build 6.2.0.339, released on Jan. 24, 2024)

CATIA is a registered trademark of Dassault Systèmes or its subsidiaries in the U.S. and/or other countries. Autodesk, the Autodesk logo, and Inventor are registered trademarks or trademarks of Autodesk, Inc., and/or its subsidiaries and/or affiliates in the USA and/or other countries. Linux is a registered trademark of Linus Torvalds in the U.S. and other countries. macOS is a trademark of Apple Inc., in the U.S. and other countries. MATLAB and Simulink are registered trademarks of The MathWorks, Inc. Microsoft, Excel, and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. Oracle and Java are registered trademarks of Oracle and/or its affiliates. Solid Edge is a trademark or registered trademark of Siemens Product Lifecycle Management Software Inc. or its subsidiaries in the United States and in other countries. SOLIDWORKS is a registered trademark of Dassault Systèmes SolidWorks Corp.