Base de connaissances du support

Improving convergence in nonlinear time dependent models

Solution numéro: 1127 Versions: Toutes les versions

When I look at the Solver Log of a time dependent model, I see that the NLFail column has non-zero entries: Step TimeStepsize Res JacSolOrderTfailNLfailLinErrLinRes 0 0-out 23208e-14 3.5e-15 ...

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Error: Error Contacting the Update Server

Solution numéro: 1126 Versions: Toutes les versions

When updating the COMSOL model library, I get the following message: Error contacting the update server Please check your internet connection. If you think your internet connection is fine, you are maybe connected ...

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Error: Failed to Connect to SOLIDWORKS

Solution numéro: 1122 Se réfère à: LiveLink for SOLIDWORKS Versions: Toutes les versions

When I try to synchronize the geometry between COMSOL and SOLIDWORKS, the error message Failed to connect to SOLIDWORKS. Please make sure SOLIDWORKS is running. is displayed, and the COMSOL Multiphysics tab in ...

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Error: Failed to Connect to AutoCAD

Solution numéro: 1123 Versions: Toutes les versions

When I synchronize the geometry between AutoCAD LT and COMSOL Multiphysics I get the error message: Failed to connect to AutoCAD. Please make sure AutoCAD is running. AutoCAD LT does not support third party add-ins. ...

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Selecting Hardware for Clusters

Solution numéro: 1116 Versions: Toutes les versions

This knowledge base outlines some hardware recommendations if you plan to set up your own compute cluster for running distributed COMSOL jobs. Depending upon the type of problems that you want to solve you will want to ...

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COMSOL Does Not Start with the Latest MATLAB Version

Solution numéro: 1113 Versions: Toutes les versions

I have installed a new MATLAB version, but running COMSOL with MATLAB keeps opening the older version of MATLAB. You need to manually update the MATLAB root directory path. In the COMSOL Desktop, on Windows® go to the ...

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How to recover your work from an interrupted simulation

Solution numéro: 1112 Versions: Toutes les versions

This knowledgebase describes how to benefit from the recovery feature in COMSOL. This is particularly useful if you have a long computation that for some reason was interrupted at some point, maybe due to system ...

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Stabilization Schemes in COMSOL

Solution numéro: 1104 Se réfère à: CFD Module, Chemical Reaction Engineering Module Versions: Toutes les versions

How can I see which stabilization schemes are used by COMSOL Multiphysics in transport physics interfaces such as Single-Phase Flow and Transport of Diluted species? Numerical solutions of transport equations can ...

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Structural Contact Modeling Guidelines

Solution numéro: 1102 Se réfère à: MEMS Module, Structural Mechanics Module Versions: Toutes les versions

This article contains guidance for solving models that include structural contact, and the procedures that should be followed to achieve a converged solution. Background Structural contact modeling is a highly non ...

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COMSOL and Multithreading

Solution numéro: 1096 Versions: Toutes les versions

This solution describes how COMSOL takes advantage of multicore computers. COMSOL supports two mutual modes of parallel operation: shared-memory parallelism and distributed-memory parallelism (cluster support). Shared ...

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