Support Knowledge Base

1127: Improving convergence in nonlinear time dependent models

My time dependent model solves without any problem as long as I use only linear materials. How can I get it to converge with a nonlinear material?   When a time dependent solver has trouble converging, its default...
Version: 4.2 - Platform: All Platforms

1118: Resolving time-dependent waves

I am solving a time-dependent wave problem, but the solution does not look quite right. I was expecting a smooth propagating waveform but see mostly noise.   The accuracy in a model solving an equation for...
Version: 4.2 - Platform: All Platforms

1085: Error: File contains no model

I am using COMSOL Multiphysics 4.0. When trying to open a model file, I get an error message saying 'File contains no model'. Model created in a newer COMSOL version The most common reason for this error message is...
Version: 4.0,4.0a,4.1,4.2 - Platform: All Platforms

966: Background and Theory References on Equation-Based Finite Element...

Where can I find documentation on the theoretical background of the algorithms and techniques used by COMSOL Multiphysics for Finite Element Analysis? The COMSOL Multiphysics manuals provide a good deal of theoretical...
Version: 4.1,4.2 - Platform: All Platforms

935: Data import

Can I import measured data in COMSOL? For instance, I have tabulated data for the thermal conductivity at different temperatures, and I have a map of permittivities versus coordinates. How can I get COMSOL Multiphysics...
Version: 3.5a,4.0,4.0a,4.1,4.2,4.2a - Platform: All Platforms

Can COMSOL Multiphysics import topological data, meshes, and images? Topological Data, GIS, Digital Elevation Models (DEM) If you have topological information saved in the DEM format, you can bring it into your COMSOL...
Version: 4.2a - Platform: All Platforms

Where can I purchase COMSOL Multiphysics? To purchase COMSOL Multiphysics, please contact your nearest sales office.
Version: All versions - Platform: All Platforms