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Running COMSOL® in Parallel on Clusters
ソリューション番号: 1001 バージョン: All versionsThis solution describes how you enable distributed parallelization (cluster jobs) in COMSOL Multiphysics®. COMSOL supports two mutual modes of parallel operation: shared-memory parallel operations and distributed ...
My Flux Calculation Seems Wrong
ソリューション番号: 973 バージョン: All versionsI am solving a diffusion-like problem in COMSOL Multiphysics and discovered that boundaries that are defined with insulation/symmetry conditions have an integrated value of the normal component of the flux that is far ...
Error: Failed to Find a Solution. Returned Solution is Not Converged
ソリューション番号: 964 バージョン: All versionsI get this message: Failed to find a solution. The relative residual (0.28) is greater than the relative tolerance. Returned solution is not converged. Messages similar to this are returned for nonlinear problems ...
Avoiding Negative Concentrations
ソリューション番号: 952 対応: CFD Module, Chemical Reaction Engineering Module, COMSOL Multiphysics, Corrosion Module, Electrochemistry Module, Electrodeposition Module, Microfluidics Module, Mixer Module, Subsurface Flow Module バージョン: All versionsWhy do I get negative values of the concentration in my diffusion, convection and reaction model? Why do I see values that go below, or above, their lowest, or highest, possible values based upon the boundary ...
What Does Degrees of Freedom (DOFs) Mean in COMSOL Multiphysics?
ソリューション番号: 875 バージョン: All versionsWhat 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 ...
Modeling of Step Transitions
ソリューション番号: 905 バージョン: All versionsYou 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 ...
Handling Large Models
ソリューション番号: 830 バージョン: All versionsModels 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 ...