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Resolving time-dependent waves

Solution numéro: 1118 Se réfère à: Acoustics Module, COMSOL Multiphysics, MEMS Module, RF Module, Structural Mechanics Module, Wave Optics Module Versions: Toutes les versions

I am solving a time-dependent wave-type problem, what mesh and solver settings should I adjust for better accuracy and runtimes? The accuracy of a time-dependent model solving for electromagnetic, acoustic, ...


Setup and Meshing of Infinite Elements, Perfectly Matched Layers, and Absorbing Layers

Solution numéro: 1272 Versions: Toutes les versions

I am setting up a model where I want to include a region of infinite extent. How should such situations be modeled and meshed? #Overview There are three options for modeling a domain that is meant to represent a ...


Understanding, and changing, the element order

Solution numéro: 1270 Versions: Toutes les versions

What is the meaning of element order, or discretization, and how do I change it? What affect does it have on the mesh and the solution? Why does the mesh look like it has straight sides even with higher-order ...


Performing a Mesh Refinement Study

Solution numéro: 1261 Versions: Toutes les versions

How do I gain confidence in the accuracy of the solution to my problem? How do I perform a mesh refinement study? All of the numerical methods used within COMSOL Multiphysics® discretize the modeling space via a Mesh ...


The usage of Form Union and Form Assembly

Solution numéro: 1216 Versions: Toutes les versions

There is an option to Form Union or Form Assembly at the end of the Geometry sequence. What does this mean and when should I switch between them? The Geometry branch within the Model Builder consists of a sequence of ...


Manually setup the geometric multigrid solver

Solution numéro: 1213 Versions: Toutes les versions

The geometric multigrid solver accelerates the convergence of the iterative solver by solving the finite element problem on a series of meshes rather than a single one. The multigrid algorithm starts with the initial ...


Failed to respect edge element on geometry edge

Solution numéro: 1207 Se réfère à: COMSOL Multiphysics Versions: Toutes les versions

The error "Failed to respect edge element on geometry edge" occurs. First, due to continual improvements in meshing, make sure to use the latest version of COMSOL Multiphysics: Product Download The mesh generator ...


Failed to respect boundary element on geometry face

Solution numéro: 1208 Se réfère à: COMSOL Multiphysics Versions: Toutes les versions

The error "Failed to respect boundary element on geometry face" occurs. First, due to continual improvements in meshing, make sure to use the latest version of COMSOL Multiphysics: Product Download The mesh generator ...


Failed to create boundary layer mesh for domains

Solution numéro: 1210 Se réfère à: COMSOL Multiphysics Versions: Toutes les versions

The error "Failed to create boundary layer mesh for domains" occurs. First, due to continual improvements in meshing, make sure to use the latest version of COMSOL Multiphysics: Product Download The mesh generator was ...


Failed to create boundary layer mesh

Solution numéro: 1209 Se réfère à: COMSOL Multiphysics Versions: Toutes les versions

The error "Failed to create boundary layer mesh" occurs. First, due to continual improvements in meshing, make sure to use the latest version of COMSOL Multiphysics: Product Download The mesh generator was not able to ...


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Apprenez à utiliser le logiciel COMSOL Multiphysics® pour modéliser des dispositifs, des designs et des procédés. Accédez aux cours et articles du centre d'apprentissage ci-dessous pour trouver des conseils de modélisation, des démonstrations étape par étape et des fichiers d'exercices.

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