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COMSOL Multiphysics

The COMSOL Multiphysics simulation environment facilitates all steps in the modeling process; defining your geometry, specifying your physics, meshing, solving and then post-processing your results.

Setting up the model up is quick, thanks to a number of predefined modeling interfaces for applications ranging from fluid flow and heat transfer to structural mechanics and electromagnetic analyses. Material properties, source terms and boundary conditions can all be arbitrary functions of the dependent variables.


  • Puhti: 6.0


The terms of use of this software allow it to be used only by affiliates (staff and students) of Finnish higher education institutions.


The following modules are currently available:

  • Acoustics
  • AC/DC
  • CAD Import
  • CFD
  • Heat Transfer
  • Particle Tracing
  • Structural Mechanics

The preferred method to use COMSOL interactively is via the Puhti web interface desktop application. In the web interface, select Desktop from the Apps view and specify the required resources (cores, execution time and memory). Remember to add your billing project, too.

To run the COMSOL GUI only, launch the session with the Desktop > single application and App > COMSOL settings. For the full desktop, select mate or xfce. Wait for a while as your interactive job sits in the queue and after that you can start COMSOL (tick the box if you want to receive an email when your session starts).


You can now also enable interactive visualization with GPU acceleration for better performance. In this case, select Accelerated visualization instead of Desktop in the Puhti web interface.

Sometimes, you may encounter errors relating to OpenGL rendering during the launch. The solution is to force COMSOL to start with software rendering from the command-line using

module load comsol
comsol -3drend sw

For this purpose, you need to launch a full desktop session without the single application setting and launch COMSOL through a host terminal.

More information

Last update: October 10, 2022