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Mesh Solutions

When I open a 3D model from the model library, or create a a 3D object, for example by extrusion of a circle, or try to view a 2D mesh, I get an error message that includes any of the following strings: Error: 9040...
Version: 3.5,3.5a - Platform: All Platforms

I get the error message "System matrix is zero". What can it be? The problem could be that you only made surface meshes on a 3D object, for example with the mapped mesh. If there are no volume...
Version: 3.4,3.5,3.5a,4.0 - Platform: All Platforms

Why do the currents in my metal look strange? How can I get a realistic solution at high frequencies? Not resolving the skin depth is one of the more common modeling mistakes in AC and RF applications. Luckily, in most...
Version: 3.4,3.5 - Platform: All Platforms

This solution describes how you enable parallelization of COMSOL. Introduction COMSOL 3.5a and later supports parallel computations on computers with multiple processors under the shared- memory parallelization model...
Version: 3.5,3.5a,4.0,4.0a - Platform: All Platforms

Why do I get the error message “Internal Error in Geometry Decomposition”? This error usually means that COMSOL Multiphysics failed to resolve the geometry relations for meshing. If your geometry consists...
Version: 3.4,3.5,3.5a,4.0,4.0a - Platform: All Platforms

In modeling of transport by diffusion or conduction in thin layers, we often encounter large differences in dimensions of the different subdomains in a model. If the modeled structure is a so-called sandwich...
Version: 3.5,3.5a,4.0 - Platform: All Platforms

What is meant by degrees of freedom (DOFs) 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...
Version: 3.4,3.5,3.5a,4.0 - Platform: All Platforms

Can COMSOL Multiphysics import images? COMSOL 3.5a Yes, in COMSOL 3.5a images of the formats BMP, JPEG, PNG, and TIFF can be converted into 2-D or 3-D geometry objects, working from the command line in MATLAB. To read...
Version: 3.4,3.5,3.5a - Platform: All Platforms

Sometimes the geometry for a problem can be very thin in one direction. Since the COMSOL Multiphysics free meshing by default creates triangles/tetrahedra that are as isotropic as possible (non-flat), a large number...
Version: 3.4,3.5,3.5a - Platform: All Platforms

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