What does degrees of freedom (DOFs) mean in COMSOL Multiphysics?Solution Number: 875 Versions: All versions
What does degrees of freedom (DOFs) mean in COMSOL Multiphysics? The solution time and memory requirements are strongly related to the number of degrees of freedom in the model. It is often desirable to be able to ...
How do I solve a PDE with space derivatives of order higher than two?Solution Number: 816 Versions: All versions
How do I solve a PDE with space derivatives of order higher than two? For example, the equation for a function . Introduce names for the second derivatives of u, say . Then the equation can be written . ...
Handling large modelsSolution Number: 830 Versions: All versions
Models with many domains, boundaries, and physics features are slow to work with. Large models can contain hundreds or even thousands of domains, boundaries, and physics features. Such a large number of features ...
Modeling of step transitionsSolution Number: 905 Versions: All versions
You may want to define loads, material properties, or boundary conditions that vary abruptly with respect to the solution, or with respect to time. This can, however, lead to a solution which is discontinuous in space ...
Could not obtain license for COMSOL Multiphysics GUISolution Number: 903 Versions: All versions
Any of the following errors can appear for example if the COMSOL application has problems communicating with the license manager: License error: -15. Cannot connect to license server system. License error: -96. ...
Can COMSOL import topological data, meshes and images?Solution Number: 838 Versions: All versions
Can COMSOL Multiphysics import meshes, topological data, and images? ##Importing Meshes Mimics and ScanIP can export volumetric meshes on COMSOL's own mesh format created from 3D scans, that can be directly imported ...
Obtaining a HostID for licensingSolution Number: 828 Versions: All versions
How do I obtain a HostID for my license file? For many license types in the COMSOL product family, your COMSOL sales representative will ask you for some information in order to create installation codes. COMSOL uses ...
What hardware do you recommend for COMSOL Multiphysics®?Solution Number: 866 Versions: All versions
I am going to buy a new dedicated computer for running COMSOL Multiphysics®. What hardware do you recommend? Due to the wide range of different problem types that COMSOL Multiphysics® solves, the rapid pace of ...
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Learning Center ResourcesLearn how to use the COMSOL Multiphysics® software for modeling devices, designs, and processes. Access the Learning Center courses and articles below for modeling guidelines, step-by-step demonstrations, and exercise files.
Examples of the General Extrusion Operator
Examples of the General Projection Operator
Integrating Along Streamlines and Extracting Particle Statistics
Copying and Reusing Boundary Mode Analysis Results
Modeling TEM and Quasi-TEM Transmission Lines
Examples of the withsol Operator
Applying Translations, Scaling, Reflection, and Rotation via the Deformed Geometry and Moving Mesh Interfaces